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 #ifdef SLAPD_SCHEMA_NOT_COMPAT
  20 static int oc_check_allowed(
  21         AttributeType *type,
  22         struct berval **oclist );
  23 #else
  24 static int              oc_check_allowed(char *type, struct berval **oclist);
  25 #endif
  26 static char *   oc_check_required(Entry *e, struct berval *ocname);
  27
  28 /*
  29  * entry_schema_check - check that entry e conforms to the schema required
  30  * by its object class(es).
  31  *
  32  * returns 0 if so, non-zero otherwise.
  33  */
  34
  35 int
  36 entry_schema_check(
  37         Entry *e, Attribute *oldattrs, const char** text )
  38 {
  39         Attribute       *a, *aoc;
  40         ObjectClass *oc;
  41         int             i;
  42         int             ret;
  43 #ifdef SLAPD_SCHEMA_NOT_COMPAT
  44         AttributeDescription *ad_objectClass = slap_schema.si_ad_objectClass;
  45 #else
  46         static const char *ad_objectClass = "objectclass";
  47 #endif
  48
  49         if( !global_schemacheck ) return LDAP_SUCCESS;
  50
  51         /* find the object class attribute - could error out here */
  52         if ( (aoc = attr_find( e->e_attrs, ad_objectClass )) == NULL ) {
  53                 Debug( LDAP_DEBUG_ANY, "No object class for entry (%s)\n",
  54                     e->e_dn, 0, 0 );
  55                 *text = "no objectclass attribute";
  56                 return oldattrs != NULL
  57                         ? LDAP_OBJECT_CLASS_VIOLATION
  58                         : LDAP_NO_OBJECT_CLASS_MODS;
  59         }
  60
  61         ret = LDAP_SUCCESS;
  62
  63         /* check that the entry has required attrs for each oc */
  64         for ( i = 0; aoc->a_vals[i] != NULL; i++ ) {
  65                 if ( (oc = oc_find( aoc->a_vals[i]->bv_val )) == NULL ) {
  66                         Debug( LDAP_DEBUG_ANY,
  67                                 "entry_check_schema(%s): objectclass \"%s\" not defined\n",
  68                                 e->e_dn, aoc->a_vals[i]->bv_val, 0 );
  69
  70                 } else {
  71                         char *s = oc_check_required( e, aoc->a_vals[i] );
  72
  73                         if (s != NULL) {
  74                                 Debug( LDAP_DEBUG_ANY,
  75                                         "Entry (%s), oc \"%s\" requires attr \"%s\"\n",
  76                                         e->e_dn, aoc->a_vals[i]->bv_val, s );
  77                                 *text = "missing required attribute";
  78                                 ret = LDAP_OBJECT_CLASS_VIOLATION;
  79                                 break;
  80                         }
  81                 }
  82         }
  83
  84         if ( ret != LDAP_SUCCESS ) {
  85             return ret;
  86         }
  87
  88         /* check that each attr in the entry is allowed by some oc */
  89         for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
  90 #ifdef SLAPD_SCHEMA_NOT_COMPAT
  91                 ret = oc_check_allowed( a->a_desc->ad_type, aoc->a_vals );
  92 #else
  93                 ret = oc_check_allowed( a->a_type, aoc->a_vals );
  94 #endif
  95                 if ( ret != 0 ) {
  96 #ifdef SLAPD_SCHEMA_NOT_COMPAT
  97                         char *type = a->a_desc->ad_cname->bv_val;
  98 #else
  99                         char *type = a->a_type;
 100 #endif
 101                         Debug( LDAP_DEBUG_ANY,
 102                             "Entry (%s), attr \"%s\" not allowed\n",
 103                             e->e_dn, type, 0 );
 104                         *text = "attribute not allowed";
 105                         break;
 106                 }
 107         }
 108
 109         return( ret );
 110 }
 111
 112 static char *
 113 oc_check_required( Entry *e, struct berval *ocname )
 114 {
 115         ObjectClass     *oc;
 116         AttributeType   *at;
 117         int             i;
 118         Attribute       *a;
 119
 120         Debug( LDAP_DEBUG_TRACE,
 121                "oc_check_required entry (%s), objectclass \"%s\"\n",
 122                e->e_dn, ocname->bv_val, 0 );
 123
 124         /* find global oc defn. it we don't know about it assume it's ok */
 125         if ( (oc = oc_find( ocname->bv_val )) == NULL ) {
 126                 return NULL;
 127         }
 128
 129         /* check for empty oc_required */
 130         if(oc->soc_required == NULL) {
 131                 return NULL;
 132         }
 133
 134         /* for each required attribute */
 135         for ( i = 0; oc->soc_required[i] != NULL; i++ ) {
 136                 at = oc->soc_required[i];
 137                 /* see if it's in the entry */
 138                 for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
 139 #ifdef SLAPD_SCHEMA_NOT_COMPAT
 140                         if( a->a_desc->ad_type == at ) {
 141                                 break;
 142                         }
 143 #else
 144                         char            **pp;
 145
 146                         if ( at->sat_oid &&
 147                              strcmp( a->a_type, at->sat_oid ) == 0 ) {
 148                                 break;
 149                         }
 150                         pp = at->sat_names;
 151                         if ( pp  == NULL ) {
 152                                 /* Empty name list => not found */
 153                                 a = NULL;
 154                                 break;
 155                         }
 156                         while ( *pp ) {
 157                                 if ( strcasecmp( a->a_type, *pp ) == 0 ) {
 158                                         break;
 159                                 }
 160                                 pp++;
 161                         }
 162                         if ( *pp ) {
 163                                 break;
 164                         }
 165 #endif
 166                 }
 167                 /* not there => schema violation */
 168                 if ( a == NULL ) {
 169 #ifdef SLAPD_SCHEMA_NOT_COMPAT
 170                         return at->sat_cname;
 171 #else
 172                         if ( at->sat_names && at->sat_names[0] ) {
 173                                 return at->sat_names[0];
 174                         } else {
 175                                 return at->sat_oid;
 176                         }
 177 #endif
 178                 }
 179         }
 180
 181         return( NULL );
 182 }
 183
 184 static int
 185 oc_check_allowed(
 186 #ifdef SLAPD_SCHEMA_NOT_COMPAT
 187         AttributeType *at,
 188 #else
 189         char *type,
 190 #endif
 191         struct berval **ocl )
 192 {
 193         ObjectClass     *oc;
 194         int             i, j;
 195
 196 #ifdef SLAPD_SCHEMA_NOT_COMPAT
 197         Debug( LDAP_DEBUG_TRACE,
 198                 "oc_check_allowed type \"%s\"\n",
 199                 at->sat_cname, 0, 0 );
 200
 201         /* always allow objectclass attribute */
 202         if ( strcasecmp( at->sat_cname, "objectclass" ) == 0 ) {
 203                 return LDAP_SUCCESS;
 204         }
 205
 206 #else
 207         AttributeType   *at;
 208         char            **pp;
 209         char            *p;
 210         char            *t;
 211
 212         Debug( LDAP_DEBUG_TRACE,
 213                "oc_check_allowed type \"%s\"\n", type, 0, 0 );
 214
 215         /* always allow objectclass attribute */
 216         if ( strcasecmp( type, "objectclass" ) == 0 ) {
 217                 return LDAP_SUCCESS;
 218         }
 219 #endif
 220
 221 #ifdef SLAPD_SCHEMA_NOT_COMPAT
 222         /*
 223          * All operational attributions are allowed by schema rules.
 224          */
 225         if( is_at_operational(at) ) {
 226                 return LDAP_SUCCESS;
 227         }
 228 #else
 229         /*
 230          * The "type" we have received is actually an AttributeDescription.
 231          * Let's find out the corresponding type.
 232          */
 233         p = strchr( type, ';' );
 234         if ( p ) {
 235                 t = ch_malloc( p-type+1 );
 236                 strncpy( t, type, p-type );
 237                 t[p-type] = '\0';
 238                 Debug( LDAP_DEBUG_TRACE,
 239                        "oc_check_allowed type \"%s\" from \"%s\"\n",
 240                        t, type, 0 );
 241
 242         } else
 243         {
 244                 t = type;
 245         }
 246
 247         /*
 248          * All operational attributions are allowed by schema rules.
 249          */
 250         if ( oc_check_op_attr( t ) ) {
 251                 return LDAP_SUCCESS;
 252         }
 253 #endif
 254
 255         /* check that the type appears as req or opt in at least one oc */
 256         for ( i = 0; ocl[i] != NULL; i++ ) {
 257                 /* if we know about the oc */
 258                 if ( (oc = oc_find( ocl[i]->bv_val )) != NULL ) {
 259                         /* does it require the type? */
 260                         for ( j = 0; oc->soc_required != NULL &&
 261                                 oc->soc_required[j] != NULL; j++ )
 262                         {
 263 #ifdef SLAPD_SCHEMA_NOT_COMPAT
 264                                 if( at == oc->soc_required[j] ) {
 265                                         return LDAP_SUCCESS;
 266                                 }
 267 #else
 268                                 at = oc->soc_required[j];
 269                                 if ( at->sat_oid &&
 270                                      strcmp(at->sat_oid, t ) == 0 ) {
 271                                         if ( t != type )
 272                                                 ldap_memfree( t );
 273                                         return LDAP_SUCCESS;
 274                                 }
 275                                 pp = at->sat_names;
 276                                 if ( pp == NULL )
 277                                         continue;
 278                                 while ( *pp ) {
 279                                         if ( strcasecmp( *pp, t ) == 0 ) {
 280                                                 if ( t != type )
 281                                                         ldap_memfree( t );
 282                                                 return LDAP_SUCCESS;
 283                                         }
 284                                         pp++;
 285                                 }
 286 #endif
 287                         }
 288                         /* does it allow the type? */
 289                         for ( j = 0; oc->soc_allowed != NULL &&
 290                                 oc->soc_allowed[j] != NULL; j++ )
 291                         {
 292 #ifdef SLAPD_SCHEMA_NOT_COMPAT
 293                                 if( at == oc->soc_allowed[j] ) {
 294                                         return LDAP_SUCCESS;
 295                                 }
 296 #else
 297                                 at = oc->soc_allowed[j];
 298                                 if ( at->sat_oid &&
 299                                      strcmp( at->sat_oid, t ) == 0 ) {
 300                                         if ( t != type )
 301                                                 ldap_memfree( t );
 302                                         return LDAP_SUCCESS;
 303                                 }
 304                                 pp = at->sat_names;
 305                                 if ( pp == NULL )
 306                                         continue;
 307                                 while ( *pp ) {
 308                                         if ( strcasecmp( *pp, t ) == 0 ||
 309                                              strcmp( *pp, "*" ) == 0 ) {
 310                                                 if ( t != type )
 311                                                         ldap_memfree( t );
 312                                                 return LDAP_SUCCESS;
 313                                         }
 314                                         pp++;
 315                                 }
 316 #endif
 317                         }
 318                         /* maybe the next oc allows it */
 319
 320 #ifdef OC_UNDEFINED_IMPLES_EXTENSIBLE
 321                 /* we don't know about the oc. assume it allows it */
 322                 } else {
 323                         if ( t != type )
 324                                 ldap_memfree( t );
 325                         return LDAP_SUCCESS;
 326 #endif
 327                 }
 328         }
 329
 330 #ifndef SLAPD_SCHEMA_NOT_COMPAT
 331         if ( t != type )
 332                 ldap_memfree( t );
 333 #endif
 334
 335         /* not allowed by any oc */
 336         return LDAP_OBJECT_CLASS_VIOLATION;
 337 }