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         int extensible = 0;
  45
  46         if( !global_schemacheck ) return LDAP_SUCCESS;
  47
  48         /* find the object class attribute - could error out here */
  49         if ( (aoc = attr_find( e->e_attrs, ad_objectClass )) == NULL ) {
  50                 Debug( LDAP_DEBUG_ANY, "No object class for entry (%s)\n",
  51                     e->e_dn, 0, 0 );
  52                 *text = "no objectclass attribute";
  53                 return oldattrs != NULL
  54                         ? LDAP_OBJECT_CLASS_VIOLATION
  55                         : LDAP_NO_OBJECT_CLASS_MODS;
  56         }
  57
  58         ret = LDAP_SUCCESS;
  59
  60         /* check that the entry has required attrs for each oc */
  61         for ( i = 0; aoc->a_vals[i] != NULL; i++ ) {
  62                 if ( (oc = oc_find( aoc->a_vals[i]->bv_val )) == NULL ) {
  63                         Debug( LDAP_DEBUG_ANY,
  64                                 "entry_check_schema(%s): objectclass \"%s\" not defined\n",
  65                                 e->e_dn, aoc->a_vals[i]->bv_val, 0 );
  66
  67                 } else {
  68                         char *s = oc_check_required( e, aoc->a_vals[i] );
  69
  70                         if (s != NULL) {
  71                                 Debug( LDAP_DEBUG_ANY,
  72                                         "Entry (%s), oc \"%s\" requires attr \"%s\"\n",
  73                                         e->e_dn, aoc->a_vals[i]->bv_val, s );
  74                                 *text = "missing required attribute";
  75                                 ret = LDAP_OBJECT_CLASS_VIOLATION;
  76                                 break;
  77                         }
  78
  79 #ifdef SLAPD_SCHEMA_NOT_COMPAT
  80                         if( oc == slap_schema.si_oc_extensibleObject )
  81 #else
  82                         if( !strcmp( aoc->a_vals[i]->bv_val, "extensibleObject" ) == 0 )
  83 #endif
  84                         {
  85                                 extensible=1;
  86                         }
  87
  88                 }
  89         }
  90
  91         if ( ret != LDAP_SUCCESS ) {
  92             return ret;
  93         }
  94
  95         if( extensible ) {
  96                 return LDAP_SUCCESS;
  97         }
  98
  99         /* check that each attr in the entry is allowed by some oc */
 100         for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
 101 #ifdef SLAPD_SCHEMA_NOT_COMPAT
 102                 ret = oc_check_allowed( a->a_desc->ad_type, aoc->a_vals );
 103 #else
 104                 ret = oc_check_allowed( a->a_type, aoc->a_vals );
 105 #endif
 106                 if ( ret != 0 ) {
 107 #ifdef SLAPD_SCHEMA_NOT_COMPAT
 108                         char *type = a->a_desc->ad_cname->bv_val;
 109 #else
 110                         char *type = a->a_type;
 111 #endif
 112                         Debug( LDAP_DEBUG_ANY,
 113                             "Entry (%s), attr \"%s\" not allowed\n",
 114                             e->e_dn, type, 0 );
 115                         *text = "attribute not allowed";
 116                         break;
 117                 }
 118         }
 119
 120         return( ret );
 121 }
 122
 123 static char *
 124 oc_check_required( Entry *e, struct berval *ocname )
 125 {
 126         ObjectClass     *oc;
 127         AttributeType   *at;
 128         int             i;
 129         Attribute       *a;
 130
 131         Debug( LDAP_DEBUG_TRACE,
 132                "oc_check_required entry (%s), objectclass \"%s\"\n",
 133                e->e_dn, ocname->bv_val, 0 );
 134
 135         /* find global oc defn. it we don't know about it assume it's ok */
 136         if ( (oc = oc_find( ocname->bv_val )) == NULL ) {
 137                 return NULL;
 138         }
 139
 140         /* check for empty oc_required */
 141         if(oc->soc_required == NULL) {
 142                 return NULL;
 143         }
 144
 145         /* for each required attribute */
 146         for ( i = 0; oc->soc_required[i] != NULL; i++ ) {
 147                 at = oc->soc_required[i];
 148                 /* see if it's in the entry */
 149                 for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
 150 #ifdef SLAPD_SCHEMA_NOT_COMPAT
 151                         if( a->a_desc->ad_type == at ) {
 152                                 break;
 153                         }
 154 #else
 155                         char            **pp;
 156
 157                         if ( at->sat_oid &&
 158                              strcmp( a->a_type, at->sat_oid ) == 0 ) {
 159                                 break;
 160                         }
 161                         pp = at->sat_names;
 162                         if ( pp  == NULL ) {
 163                                 /* Empty name list => not found */
 164                                 a = NULL;
 165                                 break;
 166                         }
 167                         while ( *pp ) {
 168                                 if ( strcasecmp( a->a_type, *pp ) == 0 ) {
 169                                         break;
 170                                 }
 171                                 pp++;
 172                         }
 173                         if ( *pp ) {
 174                                 break;
 175                         }
 176 #endif
 177                 }
 178                 /* not there => schema violation */
 179                 if ( a == NULL ) {
 180 #ifdef SLAPD_SCHEMA_NOT_COMPAT
 181                         return at->sat_cname;
 182 #else
 183                         if ( at->sat_names && at->sat_names[0] ) {
 184                                 return at->sat_names[0];
 185                         } else {
 186                                 return at->sat_oid;
 187                         }
 188 #endif
 189                 }
 190         }
 191
 192         return( NULL );
 193 }
 194
 195 #ifndef SLAPD_SCHEMA_NOT_COMPAT
 196 static
 197 #endif
 198 int oc_check_allowed(
 199 #ifdef SLAPD_SCHEMA_NOT_COMPAT
 200         AttributeType *at,
 201 #else
 202         char *type,
 203 #endif
 204         struct berval **ocl )
 205 {
 206         ObjectClass     *oc;
 207         int             i, j;
 208
 209 #ifdef SLAPD_SCHEMA_NOT_COMPAT
 210         Debug( LDAP_DEBUG_TRACE,
 211                 "oc_check_allowed type \"%s\"\n",
 212                 at->sat_cname, 0, 0 );
 213
 214         /* always allow objectclass attribute */
 215         if ( strcasecmp( at->sat_cname, "objectclass" ) == 0 ) {
 216                 return LDAP_SUCCESS;
 217         }
 218
 219 #else
 220         AttributeType   *at;
 221         char            **pp;
 222         char            *p;
 223         char            *t;
 224
 225         Debug( LDAP_DEBUG_TRACE,
 226                "oc_check_allowed type \"%s\"\n", type, 0, 0 );
 227
 228         /* always allow objectclass attribute */
 229         if ( strcasecmp( type, "objectclass" ) == 0 ) {
 230                 return LDAP_SUCCESS;
 231         }
 232 #endif
 233
 234 #ifdef SLAPD_SCHEMA_NOT_COMPAT
 235         /*
 236          * All operational attributions are allowed by schema rules.
 237          */
 238         if( is_at_operational(at) ) {
 239                 return LDAP_SUCCESS;
 240         }
 241 #else
 242         /*
 243          * The "type" we have received is actually an AttributeDescription.
 244          * Let's find out the corresponding type.
 245          */
 246         p = strchr( type, ';' );
 247         if ( p ) {
 248                 t = ch_malloc( p-type+1 );
 249                 strncpy( t, type, p-type );
 250                 t[p-type] = '\0';
 251                 Debug( LDAP_DEBUG_TRACE,
 252                        "oc_check_allowed type \"%s\" from \"%s\"\n",
 253                        t, type, 0 );
 254
 255         } else
 256         {
 257                 t = type;
 258         }
 259
 260         /*
 261          * All operational attributions are allowed by schema rules.
 262          */
 263         if ( oc_check_op_attr( t ) ) {
 264                 return LDAP_SUCCESS;
 265         }
 266 #endif
 267
 268         /* check that the type appears as req or opt in at least one oc */
 269         for ( i = 0; ocl[i] != NULL; i++ ) {
 270                 /* if we know about the oc */
 271                 if ( (oc = oc_find( ocl[i]->bv_val )) != NULL ) {
 272                         /* does it require the type? */
 273                         for ( j = 0; oc->soc_required != NULL &&
 274                                 oc->soc_required[j] != NULL; j++ )
 275                         {
 276 #ifdef SLAPD_SCHEMA_NOT_COMPAT
 277                                 if( at == oc->soc_required[j] ) {
 278                                         return LDAP_SUCCESS;
 279                                 }
 280 #else
 281                                 at = oc->soc_required[j];
 282                                 if ( at->sat_oid &&
 283                                      strcmp(at->sat_oid, t ) == 0 ) {
 284                                         if ( t != type )
 285                                                 ldap_memfree( t );
 286                                         return LDAP_SUCCESS;
 287                                 }
 288                                 pp = at->sat_names;
 289                                 if ( pp == NULL )
 290                                         continue;
 291                                 while ( *pp ) {
 292                                         if ( strcasecmp( *pp, t ) == 0 ) {
 293                                                 if ( t != type )
 294                                                         ldap_memfree( t );
 295                                                 return LDAP_SUCCESS;
 296                                         }
 297                                         pp++;
 298                                 }
 299 #endif
 300                         }
 301                         /* does it allow the type? */
 302                         for ( j = 0; oc->soc_allowed != NULL &&
 303                                 oc->soc_allowed[j] != NULL; j++ )
 304                         {
 305 #ifdef SLAPD_SCHEMA_NOT_COMPAT
 306                                 if( at == oc->soc_allowed[j] ) {
 307                                         return LDAP_SUCCESS;
 308                                 }
 309 #else
 310                                 at = oc->soc_allowed[j];
 311                                 if ( at->sat_oid &&
 312                                      strcmp( at->sat_oid, t ) == 0 ) {
 313                                         if ( t != type )
 314                                                 ldap_memfree( t );
 315                                         return LDAP_SUCCESS;
 316                                 }
 317                                 pp = at->sat_names;
 318                                 if ( pp == NULL )
 319                                         continue;
 320                                 while ( *pp ) {
 321                                         if ( strcasecmp( *pp, t ) == 0 ||
 322                                              strcmp( *pp, "*" ) == 0 ) {
 323                                                 if ( t != type )
 324                                                         ldap_memfree( t );
 325                                                 return LDAP_SUCCESS;
 326                                         }
 327                                         pp++;
 328                                 }
 329 #endif
 330                         }
 331                         /* maybe the next oc allows it */
 332
 333 #ifdef OC_UNDEFINED_IMPLES_EXTENSIBLE
 334                 /* we don't know about the oc. assume it allows it */
 335                 } else {
 336                         if ( t != type )
 337                                 ldap_memfree( t );
 338                         return LDAP_SUCCESS;
 339 #endif
 340                 }
 341         }
 342
 343 #ifndef SLAPD_SCHEMA_NOT_COMPAT
 344         if ( t != type )
 345                 ldap_memfree( t );
 346 #endif
 347
 348         /* not allowed by any oc */
 349         return LDAP_OBJECT_CLASS_VIOLATION;
 350 }