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