git.sur5r.net Git - openldap/blob - servers/slapd/schema_check.c

   1 /* schema_check.c - routines to enforce schema definitions */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-2000 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/ctype.h>
  13 #include <ac/string.h>
  14 #include <ac/socket.h>
  15
  16 #include "slap.h"
  17 #include "ldap_pvt.h"
  18
  19 static char *   oc_check_required(Entry *e, struct berval *ocname);
  20
  21 /*
  22  * entry_schema_check - check that entry e conforms to the schema required
  23  * by its object class(es).
  24  *
  25  * returns 0 if so, non-zero otherwise.
  26  */
  27
  28 int
  29 entry_schema_check(
  30         Entry *e, Attribute *oldattrs, const char** text,
  31         char *textbuf, size_t textlen )
  32 {
  33         Attribute       *a, *aoc;
  34         ObjectClass *oc;
  35         int             i;
  36         int             ret;
  37         AttributeDescription *ad_objectClass = slap_schema.si_ad_objectClass;
  38         int extensible = 0;
  39
  40         if( !global_schemacheck ) return LDAP_SUCCESS;
  41
  42         *text = textbuf;
  43
  44         /* find the object class attribute - could error out here */
  45         if ( (aoc = attr_find( e->e_attrs, ad_objectClass )) == NULL ) {
  46 #ifdef NEW_LOGGING
  47                 LDAP_LOG(( "schema", LDAP_LEVEL_INFO,
  48                            "entry_schema_check: No objectClass for entry (%s).\n", e->e_dn ));
  49 #else
  50                 Debug( LDAP_DEBUG_ANY, "No objectClass for entry (%s)\n",
  51                     e->e_dn, 0, 0 );
  52 #endif
  53
  54                 *text = "no objectClass attribute";
  55                 return LDAP_OBJECT_CLASS_VIOLATION;
  56         }
  57
  58         /* check that the entry has required attrs for each oc */
  59         for ( i = 0; aoc->a_vals[i] != NULL; i++ ) {
  60                 if ( (oc = oc_find( aoc->a_vals[i]->bv_val )) == NULL ) {
  61                         snprintf( textbuf, textlen,
  62                                 "unrecognized objectClass '%s'",
  63                                 aoc->a_vals[i]->bv_val );
  64
  65 #ifdef NEW_LOGGING
  66                         LDAP_LOG(( "schema", LDAP_LEVEL_INFO,
  67                                 "entry_schema_check: dn (%s), %s\n",
  68                                 e->e_dn, textbuf ));
  69 #else
  70                         Debug( LDAP_DEBUG_ANY,
  71                                 "entry_check_schema(%s): \"%s\" not recognized\n",
  72                                 e->e_dn, textbuf, 0 );
  73 #endif
  74
  75                         return LDAP_OBJECT_CLASS_VIOLATION;
  76
  77                 } else {
  78                         char *s = oc_check_required( e, aoc->a_vals[i] );
  79
  80                         if (s != NULL) {
  81                                 snprintf( textbuf, textlen,
  82                                         "object class '%s' requires attribute '%s'",
  83                                         aoc->a_vals[i]->bv_val, s );
  84
  85 #ifdef NEW_LOGGING
  86                                 LDAP_LOG(( "schema", LDAP_LEVEL_INFO,
  87                                         "entry_schema_check: dn=\"%s\" %s",
  88                                         e->e_dn, textbuf ));
  89 #else
  90                                 Debug( LDAP_DEBUG_ANY,
  91                                         "Entry (%s): %s\n",
  92                                         e->e_dn, textbuf, 0 );
  93 #endif
  94
  95                                 return LDAP_OBJECT_CLASS_VIOLATION;
  96                         }
  97
  98                         if( oc == slap_schema.si_oc_extensibleObject ) {
  99                                 extensible=1;
 100                         }
 101
 102                 }
 103         }
 104
 105         if( extensible ) {
 106                 return LDAP_SUCCESS;
 107         }
 108
 109         /* optimistic */
 110         ret = LDAP_SUCCESS;
 111
 112         /* check that each attr in the entry is allowed by some oc */
 113         for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
 114                 ret = oc_check_allowed( a->a_desc->ad_type, aoc->a_vals );
 115                 if ( ret != 0 ) {
 116                         char *type = a->a_desc->ad_cname->bv_val;
 117
 118                         snprintf( textbuf, textlen,
 119                                 "attribute '%s' not allowed",
 120                                 type );
 121
 122 #ifdef NEW_LOGGING
 123                         LDAP_LOG(( "schema", LDAP_LEVEL_INFO,
 124                                 "entry_schema_check: dn=\"%s\" %s\n",
 125                                 e->e_dn, textbuf ));
 126 #else
 127                         Debug( LDAP_DEBUG_ANY,
 128                             "Entry (%s), %s\n",
 129                             e->e_dn, textbuf, 0 );
 130 #endif
 131
 132                         break;
 133                 }
 134
 135
 136                 /* there should be at least one value */
 137                 assert( a->a_vals );
 138                 assert( a->a_vals[0] != NULL );
 139
 140                 /* if single value type, check for multiple values */
 141                 if( is_at_single_value( a->a_desc->ad_type ) &&
 142                         a->a_vals[1] != NULL )
 143                 {
 144                         char *type = a->a_desc->ad_cname->bv_val;
 145
 146                         snprintf( textbuf, textlen,
 147                                 "attribute '%s' cannot have multiple values",
 148                                 type );
 149
 150 #ifdef NEW_LOGGING
 151                         LDAP_LOG(( "schema", LDAP_LEVEL_INFO,
 152                                 "entry_schema_check: dn=\"%s\" %s\n",
 153                                 e->e_dn, textbuf ));
 154 #else
 155                         Debug( LDAP_DEBUG_ANY,
 156                             "Entry (%s), %s\n",
 157                             e->e_dn, textbuf, 0 );
 158 #endif
 159
 160                         ret = LDAP_CONSTRAINT_VIOLATION;
 161                         break;
 162                 }
 163         }
 164
 165         return( ret );
 166 }
 167
 168 static char *
 169 oc_check_required( Entry *e, struct berval *ocname )
 170 {
 171         ObjectClass     *oc;
 172         AttributeType   *at;
 173         int             i;
 174         Attribute       *a;
 175
 176 #ifdef NEW_LOGGING
 177         LDAP_LOG(( "schema", LDAP_LEVEL_ENTRY,
 178                    "oc_check_required: dn (%s), objectClass \"%s\"\n",
 179                    e->e_dn, ocname->bv_val ));
 180 #else
 181         Debug( LDAP_DEBUG_TRACE,
 182                "oc_check_required entry (%s), objectClass \"%s\"\n",
 183                e->e_dn, ocname->bv_val, 0 );
 184 #endif
 185
 186
 187         /* find global oc defn. it we don't know about it assume it's ok */
 188         if ( (oc = oc_find( ocname->bv_val )) == NULL ) {
 189                 return NULL;
 190         }
 191
 192         /* check for empty oc_required */
 193         if(oc->soc_required == NULL) {
 194                 return NULL;
 195         }
 196
 197         /* for each required attribute */
 198         for ( i = 0; oc->soc_required[i] != NULL; i++ ) {
 199                 at = oc->soc_required[i];
 200                 /* see if it's in the entry */
 201                 for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
 202                         if( a->a_desc->ad_type == at ) {
 203                                 break;
 204                         }
 205                 }
 206                 /* not there => schema violation */
 207                 if ( a == NULL ) {
 208                         return at->sat_cname;
 209                 }
 210         }
 211
 212         return( NULL );
 213 }
 214
 215 int oc_check_allowed(
 216         AttributeType *at,
 217         struct berval **ocl )
 218 {
 219         ObjectClass     *oc;
 220         int             i, j;
 221
 222 #ifdef NEW_LOGGING
 223         LDAP_LOG(( "schema", LDAP_LEVEL_ENTRY,
 224                    "oc_check_allowed: type \"%s\"\n", at->sat_cname ));
 225 #else
 226         Debug( LDAP_DEBUG_TRACE,
 227                 "oc_check_allowed type \"%s\"\n",
 228                 at->sat_cname, 0, 0 );
 229 #endif
 230
 231         /* always allow objectClass attribute */
 232         if ( strcasecmp( at->sat_cname, "objectClass" ) == 0 ) {
 233                 return LDAP_SUCCESS;
 234         }
 235
 236
 237         /*
 238          * All operational attributions are allowed by schema rules.
 239          */
 240         if( is_at_operational(at) ) {
 241                 return LDAP_SUCCESS;
 242         }
 243
 244         /* check that the type appears as req or opt in at least one oc */
 245         for ( i = 0; ocl[i] != NULL; i++ ) {
 246                 /* if we know about the oc */
 247                 if ( (oc = oc_find( ocl[i]->bv_val )) != NULL ) {
 248                         /* does it require the type? */
 249                         for ( j = 0; oc->soc_required != NULL &&
 250                                 oc->soc_required[j] != NULL; j++ )
 251                         {
 252                                 if( at == oc->soc_required[j] ) {
 253                                         return LDAP_SUCCESS;
 254                                 }
 255                         }
 256                         /* does it allow the type? */
 257                         for ( j = 0; oc->soc_allowed != NULL &&
 258                                 oc->soc_allowed[j] != NULL; j++ )
 259                         {
 260                                 if( at == oc->soc_allowed[j] ) {
 261                                         return LDAP_SUCCESS;
 262                                 }
 263                         }
 264                         /* maybe the next oc allows it */
 265                 }
 266         }
 267
 268         /* not allowed by any oc */
 269         return LDAP_OBJECT_CLASS_VIOLATION;
 270 }