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 1998-1999 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 schema_check_entry( Entry *e )
  37 {
  38         Attribute       *a, *aoc;
  39         ObjectClass *oc;
  40         int             i;
  41         int             ret = 0;
  42 #ifdef SLAPD_SCHEMA_NOT_COMPAT
  43         static AttributeDescription *objectClass = NULL;
  44 #else
  45         static const char *objectClass = "objectclass";
  46 #endif
  47
  48
  49         if( !global_schemacheck ) return 0;
  50
  51         /* find the object class attribute - could error out here */
  52         if ( (aoc = attr_find( e->e_attrs, objectClass )) == NULL ) {
  53                 Debug( LDAP_DEBUG_ANY, "No object class for entry (%s)\n",
  54                     e->e_dn, 0, 0 );
  55                 return( 1 );
  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                         Debug( LDAP_DEBUG_ANY,
  62                                 "Objectclass \"%s\" not defined\n",
  63                                 aoc->a_vals[i]->bv_val, 0, 0 );
  64                 }
  65                 else
  66                 {
  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                                 ret = 1;
  74                         }
  75                 }
  76         }
  77
  78         if ( ret != 0 ) {
  79             return( ret );
  80         }
  81
  82         /* check that each attr in the entry is allowed by some oc */
  83         for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
  84 #ifdef SLAPD_SCHEMA_NOT_COMPAT
  85                 if ( oc_check_allowed( a->a_desc->ad_type, aoc->a_vals ) != 0 ) {
  86                         Debug( LDAP_DEBUG_ANY,
  87                             "Entry (%s), attr \"%s\" not allowed\n",
  88                             e->e_dn, a->a_desc->ad_cname->bv_val, 0 );
  89                         ret = 1;
  90                 }
  91 #else
  92                 if ( oc_check_allowed( a->a_type, aoc->a_vals ) != 0 ) {
  93                         Debug( LDAP_DEBUG_ANY,
  94                             "Entry (%s), attr \"%s\" not allowed\n",
  95                             e->e_dn, a->a_type, 0 );
  96                         ret = 1;
  97                 }
  98 #endif
  99         }
 100
 101         return( ret );
 102 }
 103
 104 static char *
 105 oc_check_required( Entry *e, struct berval *ocname )
 106 {
 107         ObjectClass     *oc;
 108         AttributeType   *at;
 109         int             i;
 110         Attribute       *a;
 111
 112         Debug( LDAP_DEBUG_TRACE,
 113                "oc_check_required entry (%s), objectclass \"%s\"\n",
 114                e->e_dn, ocname, 0 );
 115
 116         /* find global oc defn. it we don't know about it assume it's ok */
 117         if ( (oc = oc_find( ocname->bv_val )) == NULL ) {
 118                 return( 0 );
 119         }
 120
 121         /* check for empty oc_required */
 122         if(oc->soc_required == NULL) {
 123                 return( 0 );
 124         }
 125
 126         /* for each required attribute */
 127         for ( i = 0; oc->soc_required[i] != NULL; i++ ) {
 128                 at = oc->soc_required[i];
 129                 /* see if it's in the entry */
 130                 for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
 131 #ifdef SLAPD_SCHEMA_NOT_COMPAT
 132                         if( a->a_desc->ad_type == at ) {
 133                                 break;
 134                         }
 135 #else
 136                         char            **pp;
 137
 138                         if ( at->sat_oid &&
 139                              strcmp( a->a_type, at->sat_oid ) == 0 ) {
 140                                 break;
 141                         }
 142                         pp = at->sat_names;
 143                         if ( pp  == NULL ) {
 144                                 /* Empty name list => not found */
 145                                 a = NULL;
 146                                 break;
 147                         }
 148                         while ( *pp ) {
 149                                 if ( strcasecmp( a->a_type, *pp ) == 0 ) {
 150                                         break;
 151                                 }
 152                                 pp++;
 153                         }
 154                         if ( *pp ) {
 155                                 break;
 156                         }
 157 #endif
 158                 }
 159                 /* not there => schema violation */
 160                 if ( a == NULL ) {
 161 #ifdef SLAPD_SCHEMA_NOT_COMPAT
 162                         return at->sat_cname;
 163 #else
 164                         if ( at->sat_names && at->sat_names[0] ) {
 165                                 return at->sat_names[0];
 166                         } else {
 167                                 return at->sat_oid;
 168                         }
 169 #endif
 170                 }
 171         }
 172
 173         return( NULL );
 174 }
 175
 176 static int
 177 oc_check_allowed(
 178 #ifdef SLAPD_SCHEMA_NOT_COMPAT
 179         AttributeType *at,
 180 #else
 181         char *type,
 182 #endif
 183         struct berval **ocl )
 184 {
 185         ObjectClass     *oc;
 186         int             i, j;
 187
 188 #ifdef SLAPD_SCHEMA_NOT_COMPAT
 189         Debug( LDAP_DEBUG_TRACE,
 190                 "oc_check_allowed type \"%s\"\n",
 191                 at->sat_cname, 0, 0 );
 192
 193         /* always allow objectclass attribute */
 194         if ( strcasecmp( at->sat_cname, "objectclass" ) == 0 ) {
 195                 return( 0 );
 196         }
 197
 198 #else
 199         AttributeType   *at;
 200         char            **pp;
 201         char            *p;
 202         char            *t;
 203
 204         Debug( LDAP_DEBUG_TRACE,
 205                "oc_check_allowed type \"%s\"\n", type, 0, 0 );
 206
 207         /* always allow objectclass attribute */
 208         if ( strcasecmp( type, "objectclass" ) == 0 ) {
 209                 return( 0 );
 210         }
 211 #endif
 212
 213 #ifdef SLAPD_SCHEMA_NOT_COMPAT
 214         if( is_at_operational(at) ) {
 215                 return 0;
 216         }
 217 #else
 218         /*
 219          * The "type" we have received is actually an AttributeDescription.
 220          * Let's find out the corresponding type.
 221          */
 222         p = strchr( type, ';' );
 223         if ( p ) {
 224                 t = ch_malloc( p-type+1 );
 225                 strncpy( t, type, p-type );
 226                 t[p-type] = '\0';
 227                 Debug( LDAP_DEBUG_TRACE,
 228                        "oc_check_allowed type \"%s\" from \"%s\"\n",
 229                        t, type, 0 );
 230
 231         } else
 232         {
 233                 t = type;
 234         }
 235
 236         /*
 237          * All operational attributions are allowed by schema rules.
 238          */
 239         if ( oc_check_op_attr( t ) ) {
 240                 return( 0 );
 241         }
 242 #endif
 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 #ifdef SLAPD_SCHEMA_NOT_COMPAT
 253                                 if( at == oc->soc_required[j] ) {
 254                                         return 0;
 255                                 }
 256 #else
 257                                 at = oc->soc_required[j];
 258                                 if ( at->sat_oid &&
 259                                      strcmp(at->sat_oid, t ) == 0 ) {
 260                                         if ( t != type )
 261                                                 ldap_memfree( t );
 262                                         return( 0 );
 263                                 }
 264                                 pp = at->sat_names;
 265                                 if ( pp == NULL )
 266                                         continue;
 267                                 while ( *pp ) {
 268                                         if ( strcasecmp( *pp, t ) == 0 ) {
 269                                                 if ( t != type )
 270                                                         ldap_memfree( t );
 271                                                 return( 0 );
 272                                         }
 273                                         pp++;
 274                                 }
 275 #endif
 276                         }
 277                         /* does it allow the type? */
 278                         for ( j = 0; oc->soc_allowed != NULL &&
 279                                 oc->soc_allowed[j] != NULL; j++ )
 280                         {
 281 #ifdef SLAPD_SCHEMA_NOT_COMPAT
 282                                 if( at == oc->soc_allowed[j] ) {
 283                                         return 0;
 284                                 }
 285 #else
 286                                 at = oc->soc_allowed[j];
 287                                 if ( at->sat_oid &&
 288                                      strcmp( at->sat_oid, t ) == 0 ) {
 289                                         if ( t != type )
 290                                                 ldap_memfree( t );
 291                                         return( 0 );
 292                                 }
 293                                 pp = at->sat_names;
 294                                 if ( pp == NULL )
 295                                         continue;
 296                                 while ( *pp ) {
 297                                         if ( strcasecmp( *pp, t ) == 0 ||
 298                                              strcmp( *pp, "*" ) == 0 ) {
 299                                                 if ( t != type )
 300                                                         ldap_memfree( t );
 301                                                 return( 0 );
 302                                         }
 303                                         pp++;
 304                                 }
 305 #endif
 306                         }
 307                         /* maybe the next oc allows it */
 308
 309 #ifdef OC_UNDEFINED_IMPLES_EXTENSIBLE
 310                 /* we don't know about the oc. assume it allows it */
 311                 } else {
 312                         if ( t != type )
 313                                 ldap_memfree( t );
 314                         return( 0 );
 315 #endif
 316                 }
 317         }
 318
 319 #ifndef SLAPD_SCHEMA_NOT_COMPAT
 320         if ( t != type )
 321                 ldap_memfree( t );
 322 #endif
 323
 324         /* not allowed by any oc */
 325         return( 1 );
 326 }