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