git.sur5r.net Git - openldap/blob - servers/slapd/root_dse.c

   1 /* root_dse.c - Provides the Root DSA-Specific Entry */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1999-2005 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16
  17 #include "portable.h"
  18
  19 #include <stdio.h>
  20
  21 #include <ac/string.h>
  22
  23 #include "slap.h"
  24 #include <ldif.h>
  25 #include "lber_pvt.h"
  26
  27 #ifdef LDAP_SLAPI
  28 #include "slapi/slapi.h"
  29 #endif
  30
  31 static struct berval    builtin_supportedFeatures[] = {
  32         BER_BVC(LDAP_FEATURE_MODIFY_INCREMENT),         /* Modify/increment */
  33         BER_BVC(LDAP_FEATURE_ALL_OP_ATTRS),             /* All Op Attrs (+) */
  34         BER_BVC(LDAP_FEATURE_OBJECTCLASS_ATTRS),        /* OCs in Attrs List (@class) */
  35         BER_BVC(LDAP_FEATURE_ABSOLUTE_FILTERS),         /* (&) and (|) search filters */
  36         BER_BVC(LDAP_FEATURE_LANGUAGE_TAG_OPTIONS),     /* Language Tag Options */
  37         BER_BVC(LDAP_FEATURE_LANGUAGE_RANGE_OPTIONS),   /* Language Range Options */
  38 #ifdef LDAP_FEATURE_SUBORDINATE_SCOPE
  39         BER_BVC(LDAP_FEATURE_SUBORDINATE_SCOPE),        /* "children" search scope */
  40 #endif
  41         BER_BVNULL
  42 };
  43 static struct berval    *supportedFeatures;
  44
  45 static Entry    *usr_attr = NULL;
  46
  47 static int
  48 supported_feature_init( void )
  49 {
  50         int             i;
  51
  52         if ( supportedFeatures != NULL ) {
  53                 return 0;
  54         }
  55
  56         for ( i = 0; !BER_BVISNULL( &builtin_supportedFeatures[ i ] ); i++ )
  57                 ;
  58
  59         supportedFeatures = ch_calloc( sizeof( struct berval ), i + 1 );
  60         if ( supportedFeatures == NULL ) {
  61                 return -1;
  62         }
  63
  64         for ( i = 0; !BER_BVISNULL( &builtin_supportedFeatures[ i ] ); i++ ) {
  65                 ber_dupbv( &supportedFeatures[ i ], &builtin_supportedFeatures[ i ] );
  66         }
  67         BER_BVZERO( &supportedFeatures[ i ] );
  68
  69         return 0;
  70 }
  71
  72 int
  73 supported_feature_destroy( void )
  74 {
  75         int             i;
  76
  77         if ( supportedFeatures == NULL ) {
  78                 return 0;
  79         }
  80
  81         for ( i = 0; !BER_BVISNULL( &supportedFeatures[ i ] ); i++ ) {
  82                 ch_free( supportedFeatures[ i ].bv_val );
  83         }
  84
  85         ch_free( supportedFeatures );
  86         supportedFeatures = NULL;
  87
  88         return 0;
  89 }
  90
  91 int
  92 supported_feature_load( struct berval *f )
  93 {
  94         struct berval   *tmp;
  95         int             i;
  96
  97         supported_feature_init();
  98
  99         for ( i = 0; !BER_BVISNULL( &supportedFeatures[ i ] ); i++ )
 100                 ;
 101
 102         tmp = ch_realloc( supportedFeatures, sizeof( struct berval ) * ( i + 2 ) );
 103         if ( tmp == NULL ) {
 104                 return -1;
 105         }
 106         supportedFeatures = tmp;
 107
 108         ber_dupbv( &supportedFeatures[ i ], f );
 109         BER_BVZERO( &supportedFeatures[ i + 1 ] );
 110
 111         return 0;
 112 }
 113
 114 int
 115 root_dse_info(
 116         Connection *conn,
 117         Entry **entry,
 118         const char **text )
 119 {
 120         Entry           *e;
 121         struct berval val;
 122 #ifdef LDAP_SLAPI
 123         struct berval *bv;
 124 #endif
 125         int             i, j;
 126         char ** supportedSASLMechanisms;
 127         BackendDB *be;
 128
 129         AttributeDescription *ad_structuralObjectClass
 130                 = slap_schema.si_ad_structuralObjectClass;
 131         AttributeDescription *ad_objectClass
 132                 = slap_schema.si_ad_objectClass;
 133         AttributeDescription *ad_namingContexts
 134                 = slap_schema.si_ad_namingContexts;
 135 #ifdef LDAP_SLAPI
 136         AttributeDescription *ad_supportedExtension
 137                 = slap_schema.si_ad_supportedExtension;
 138 #endif
 139         AttributeDescription *ad_supportedLDAPVersion
 140                 = slap_schema.si_ad_supportedLDAPVersion;
 141         AttributeDescription *ad_supportedSASLMechanisms
 142                 = slap_schema.si_ad_supportedSASLMechanisms;
 143         AttributeDescription *ad_supportedFeatures
 144                 = slap_schema.si_ad_supportedFeatures;
 145         AttributeDescription *ad_monitorContext
 146                 = slap_schema.si_ad_monitorContext;
 147         AttributeDescription *ad_configContext
 148                 = slap_schema.si_ad_configContext;
 149         AttributeDescription *ad_ref
 150                 = slap_schema.si_ad_ref;
 151
 152         e = (Entry *) SLAP_CALLOC( 1, sizeof(Entry) );
 153
 154         if( e == NULL ) {
 155                 Debug( LDAP_DEBUG_ANY,
 156                         "root_dse_info: SLAP_CALLOC failed", 0, 0, 0 );
 157                 return LDAP_OTHER;
 158         }
 159
 160         e->e_attrs = NULL;
 161         e->e_name.bv_val = ch_strdup( LDAP_ROOT_DSE );
 162         e->e_name.bv_len = sizeof( LDAP_ROOT_DSE )-1;
 163         e->e_nname.bv_val = ch_strdup( LDAP_ROOT_DSE );
 164         e->e_nname.bv_len = sizeof( LDAP_ROOT_DSE )-1;
 165
 166         /* the DN is an empty string so no pretty/normalization is needed */
 167         assert( !e->e_name.bv_len );
 168         assert( !e->e_nname.bv_len );
 169
 170         e->e_private = NULL;
 171
 172         BER_BVSTR( &val, "top" );
 173         if( attr_merge_one( e, ad_objectClass, &val, NULL ) ) {
 174                 return LDAP_OTHER;
 175         }
 176
 177         BER_BVSTR( &val, "OpenLDAProotDSE" );
 178         if( attr_merge_one( e, ad_objectClass, &val, NULL ) ) {
 179                 return LDAP_OTHER;
 180         }
 181         if( attr_merge_one( e, ad_structuralObjectClass, &val, NULL ) ) {
 182                 return LDAP_OTHER;
 183         }
 184
 185         LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
 186                 if ( be->be_suffix == NULL
 187                                 || be->be_nsuffix == NULL ) {
 188                         /* no suffix! */
 189                         continue;
 190                 }
 191                 if ( SLAP_MONITOR( be )) {
 192                         if( attr_merge_one( e, ad_monitorContext,
 193                                         &be->be_suffix[0],
 194                                         &be->be_nsuffix[0] ) )
 195                         {
 196                                 return LDAP_OTHER;
 197                         }
 198                         continue;
 199                 }
 200                 if ( SLAP_CONFIG( be )) {
 201                         if( attr_merge_one( e, ad_configContext,
 202                                         &be->be_suffix[0],
 203                                         & be->be_nsuffix[0] ) )
 204                         {
 205                                 return LDAP_OTHER;
 206                         }
 207                         continue;
 208                 }
 209                 if ( SLAP_GLUE_SUBORDINATE( be ) && !SLAP_GLUE_ADVERTISE( be ) ) {
 210                         continue;
 211                 }
 212                 for ( j = 0; be->be_suffix[j].bv_val != NULL; j++ ) {
 213                         if( attr_merge_one( e, ad_namingContexts,
 214                                         &be->be_suffix[j],
 215                                         &be->be_nsuffix[0] ) )
 216                         {
 217                                 return LDAP_OTHER;
 218                         }
 219                 }
 220         }
 221
 222         /* altServer unsupported */
 223
 224         /* supportedControl */
 225         if ( controls_root_dse_info( e ) != 0 ) {
 226                 return LDAP_OTHER;
 227         }
 228
 229         /* supportedExtension */
 230         if ( exop_root_dse_info( e ) != 0 ) {
 231                 return LDAP_OTHER;
 232         }
 233
 234 #ifdef LDAP_SLAPI
 235         /* netscape supportedExtension */
 236         for ( i = 0; (bv = slapi_int_get_supported_extop(i)) != NULL; i++ ) {
 237                 if( attr_merge_one( e, ad_supportedExtension, bv, NULL ) ) {
 238                         return LDAP_OTHER;
 239                 }
 240         }
 241 #endif /* LDAP_SLAPI */
 242
 243         /* supportedFeatures */
 244         if ( supportedFeatures == NULL ) {
 245                 supported_feature_init();
 246         }
 247
 248         if( attr_merge( e, ad_supportedFeatures, supportedFeatures, NULL ) ) {
 249                 return LDAP_OTHER;
 250         }
 251
 252         /* supportedLDAPVersion */
 253                 /* don't publish version 2 as we don't really support it
 254                  * (even when configured to accept version 2 Bind requests)
 255                  * and the value would never be used by true LDAPv2 (or LDAPv3)
 256                  * clients.
 257                  */
 258         for ( i=LDAP_VERSION3; i<=LDAP_VERSION_MAX; i++ ) {
 259                 char buf[BUFSIZ];
 260                 snprintf(buf, sizeof buf, "%d", i);
 261                 val.bv_val = buf;
 262                 val.bv_len = strlen( val.bv_val );
 263                 if( attr_merge_one( e, ad_supportedLDAPVersion, &val, NULL ) ) {
 264                         return LDAP_OTHER;
 265                 }
 266         }
 267
 268         /* supportedSASLMechanism */
 269         supportedSASLMechanisms = slap_sasl_mechs( conn );
 270
 271         if( supportedSASLMechanisms != NULL ) {
 272                 for ( i=0; supportedSASLMechanisms[i] != NULL; i++ ) {
 273                         val.bv_val = supportedSASLMechanisms[i];
 274                         val.bv_len = strlen( val.bv_val );
 275                         if( attr_merge_one( e, ad_supportedSASLMechanisms, &val, NULL ) ) {
 276                                 return LDAP_OTHER;
 277                         }
 278                 }
 279                 ldap_charray_free( supportedSASLMechanisms );
 280         }
 281
 282         if ( default_referral != NULL ) {
 283                 if( attr_merge( e, ad_ref, default_referral, NULL /* FIXME */ ) ) {
 284                         return LDAP_OTHER;
 285                 }
 286         }
 287
 288         if( usr_attr != NULL) {
 289                 Attribute *a;
 290                 for( a = usr_attr->e_attrs; a != NULL; a = a->a_next ) {
 291                         if( attr_merge( e, a->a_desc, a->a_vals,
 292                                 (a->a_nvals == a->a_vals) ? NULL : a->a_nvals ) )
 293                         {
 294                                 return LDAP_OTHER;
 295                         }
 296                 }
 297         }
 298
 299         *entry = e;
 300         return LDAP_SUCCESS;
 301 }
 302
 303 /*
 304  * Read the entries specified in fname and merge the attributes
 305  * to the user defined rootDSE. Note thaat if we find any errors
 306  * what so ever, we will discard the entire entries, print an
 307  * error message and return.
 308  */
 309 int read_root_dse_file( const char *fname )
 310 {
 311         struct LDIFFP   *fp;
 312         int rc = 0, lineno = 0, lmax = 0;
 313         char    *buf = NULL;
 314
 315         if ( (fp = ldif_open( fname, "r" )) == NULL ) {
 316                 Debug( LDAP_DEBUG_ANY,
 317                         "could not open rootdse attr file \"%s\" - absolute path?\n",
 318                         fname, 0, 0 );
 319                 perror( fname );
 320                 return EXIT_FAILURE;
 321         }
 322
 323         usr_attr = (Entry *) SLAP_CALLOC( 1, sizeof(Entry) );
 324         if( usr_attr == NULL ) {
 325                 Debug( LDAP_DEBUG_ANY,
 326                         "read_root_dse_file: SLAP_CALLOC failed", 0, 0, 0 );
 327                 ldif_close( fp );
 328                 return LDAP_OTHER;
 329         }
 330         usr_attr->e_attrs = NULL;
 331
 332         while( ldif_read_record( fp, &lineno, &buf, &lmax ) ) {
 333                 Entry *e = str2entry( buf );
 334                 Attribute *a;
 335
 336                 if( e == NULL ) {
 337                         fprintf( stderr, "root_dse: could not parse entry (line=%d)\n",
 338                                 lineno );
 339                         rc = EXIT_FAILURE;
 340                         break;
 341                 }
 342
 343                 /* make sure the DN is the empty DN */
 344                 if( e->e_nname.bv_len ) {
 345                         fprintf( stderr,
 346                                 "root_dse: invalid rootDSE - dn=\"%s\" (line=%d)\n",
 347                                 e->e_dn, lineno );
 348                         entry_free( e );
 349                         rc = EXIT_FAILURE;
 350                         break;
 351                 }
 352
 353                 /*
 354                  * we found a valid entry, so walk thru all the attributes in the
 355                  * entry, and add each attribute type and description to the
 356                  * usr_attr entry
 357                  */
 358
 359                 for(a = e->e_attrs; a != NULL; a = a->a_next) {
 360                         if( attr_merge( usr_attr, a->a_desc, a->a_vals,
 361                                 (a->a_nvals == a->a_vals) ? NULL : a->a_nvals ) )
 362                         {
 363                                 rc = LDAP_OTHER;
 364                                 break;
 365                         }
 366                 }
 367
 368                 entry_free( e );
 369                 if (rc) break;
 370         }
 371
 372         if (rc) {
 373                 entry_free( usr_attr );
 374                 usr_attr = NULL;
 375         }
 376
 377         ch_free( buf );
 378
 379         ldif_close( fp );
 380
 381         Debug(LDAP_DEBUG_CONFIG, "rootDSE file %s read.\n", fname, 0, 0);
 382         return rc;
 383 }
 384
 385 int
 386 slap_discover_feature(
 387         const char      *uri,
 388         int             version,
 389         const char      *attr,
 390         const char      *val )
 391 {
 392         LDAP            *ld;
 393         LDAPMessage     *res = NULL, *entry;
 394         int             rc, i;
 395         struct berval   cred = BER_BVC( "" ),
 396                         bv_val,
 397                         **values = NULL;
 398         char            *attrs[ 2 ] = { NULL, NULL };
 399
 400         ber_str2bv( val, 0, 0, &bv_val );
 401         attrs[ 0 ] = (char *) attr;
 402
 403         rc = ldap_initialize( &ld, uri );
 404         if ( rc != LDAP_SUCCESS ) {
 405                 return rc;
 406         }
 407
 408         rc = ldap_set_option( ld, LDAP_OPT_PROTOCOL_VERSION, &version );
 409         if ( rc != LDAP_SUCCESS ) {
 410                 goto done;
 411         }
 412
 413         rc = ldap_sasl_bind_s( ld, "", LDAP_SASL_SIMPLE,
 414                         &cred, NULL, NULL, NULL );
 415         if ( rc != LDAP_SUCCESS ) {
 416                 goto done;
 417         }
 418
 419         rc = ldap_search_ext_s( ld, "", LDAP_SCOPE_BASE, "(objectClass=*)",
 420                         attrs, 0, NULL, NULL, NULL, 0, &res );
 421         if ( rc != LDAP_SUCCESS ) {
 422                 goto done;
 423         }
 424
 425         entry = ldap_first_entry( ld, res );
 426         if ( entry == NULL ) {
 427                 goto done;
 428         }
 429
 430         values = ldap_get_values_len( ld, entry, attrs[ 0 ] );
 431         if ( values == NULL ) {
 432                 rc = LDAP_NO_SUCH_ATTRIBUTE;
 433                 goto done;
 434         }
 435
 436         for ( i = 0; values[ i ] != NULL; i++ ) {
 437                 if ( bvmatch( &bv_val, values[ i ] ) ) {
 438                         rc = LDAP_COMPARE_TRUE;
 439                         goto done;
 440                 }
 441         }
 442
 443         rc = LDAP_COMPARE_FALSE;
 444
 445 done:;
 446         if ( values != NULL ) {
 447                 ldap_value_free_len( values );
 448         }
 449
 450         if ( res != NULL ) {
 451                 ldap_msgfree( res );
 452         }
 453
 454         ldap_unbind_ext( ld, NULL, NULL );
 455
 456         return rc;
 457 }
 458