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

   1 /* mr.c - routines to manage matching rule definitions */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-2002 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 struct mindexrec {
  20         struct berval   mir_name;
  21         MatchingRule    *mir_mr;
  22 };
  23
  24 static Avlnode  *mr_index = NULL;
  25 static MatchingRule *mr_list = NULL;
  26 static MatchingRuleUse *mru_list = NULL;
  27
  28 static int
  29 mr_index_cmp(
  30     struct mindexrec    *mir1,
  31     struct mindexrec    *mir2
  32 )
  33 {
  34         int i = mir1->mir_name.bv_len - mir2->mir_name.bv_len;
  35         if (i) return i;
  36         return (strcmp( mir1->mir_name.bv_val, mir2->mir_name.bv_val ));
  37 }
  38
  39 static int
  40 mr_index_name_cmp(
  41     struct berval       *name,
  42     struct mindexrec    *mir
  43 )
  44 {
  45         int i = name->bv_len - mir->mir_name.bv_len;
  46         if (i) return i;
  47         return (strncmp( name->bv_val, mir->mir_name.bv_val, name->bv_len ));
  48 }
  49
  50 MatchingRule *
  51 mr_find( const char *mrname )
  52 {
  53         struct berval bv;
  54
  55         bv.bv_val = (char *)mrname;
  56         bv.bv_len = strlen( mrname );
  57         return mr_bvfind( &bv );
  58 }
  59
  60 MatchingRule *
  61 mr_bvfind( struct berval *mrname )
  62 {
  63         struct mindexrec        *mir = NULL;
  64
  65         if ( (mir = (struct mindexrec *) avl_find( mr_index, mrname,
  66             (AVL_CMP) mr_index_name_cmp )) != NULL ) {
  67                 return( mir->mir_mr );
  68         }
  69         return( NULL );
  70 }
  71
  72 void
  73 mr_destroy( void )
  74 {
  75         MatchingRule *m, *n;
  76
  77         avl_free(mr_index, ldap_memfree);
  78         for (m=mr_list; m; m=n) {
  79                 n = m->smr_next;
  80                 ch_free( m->smr_str.bv_val );
  81                 ldap_matchingrule_free((LDAPMatchingRule *)m);
  82         }
  83 }
  84
  85 static int
  86 mr_insert(
  87     MatchingRule        *smr,
  88     const char          **err
  89 )
  90 {
  91         MatchingRule            **mrp;
  92         struct mindexrec        *mir;
  93         char                    **names;
  94
  95         mrp = &mr_list;
  96         while ( *mrp != NULL ) {
  97                 mrp = &(*mrp)->smr_next;
  98         }
  99         *mrp = smr;
 100
 101         if ( smr->smr_oid ) {
 102                 mir = (struct mindexrec *)
 103                         ch_calloc( 1, sizeof(struct mindexrec) );
 104                 mir->mir_name.bv_val = smr->smr_oid;
 105                 mir->mir_name.bv_len = strlen( smr->smr_oid );
 106                 mir->mir_mr = smr;
 107                 if ( avl_insert( &mr_index, (caddr_t) mir,
 108                                  (AVL_CMP) mr_index_cmp,
 109                                  (AVL_DUP) avl_dup_error ) ) {
 110                         *err = smr->smr_oid;
 111                         ldap_memfree(mir);
 112                         return SLAP_SCHERR_MR_DUP;
 113                 }
 114                 /* FIX: temporal consistency check */
 115                 mr_bvfind(&mir->mir_name);
 116         }
 117         if ( (names = smr->smr_names) ) {
 118                 while ( *names ) {
 119                         mir = (struct mindexrec *)
 120                                 ch_calloc( 1, sizeof(struct mindexrec) );
 121                         mir->mir_name.bv_val = *names;
 122                         mir->mir_name.bv_len = strlen( *names );
 123                         mir->mir_mr = smr;
 124                         if ( avl_insert( &mr_index, (caddr_t) mir,
 125                                          (AVL_CMP) mr_index_cmp,
 126                                          (AVL_DUP) avl_dup_error ) ) {
 127                                 *err = *names;
 128                                 ldap_memfree(mir);
 129                                 return SLAP_SCHERR_MR_DUP;
 130                         }
 131                         /* FIX: temporal consistency check */
 132                         mr_bvfind(&mir->mir_name);
 133                         names++;
 134                 }
 135         }
 136         return 0;
 137 }
 138
 139 int
 140 mr_add(
 141     LDAPMatchingRule            *mr,
 142     slap_mrule_defs_rec *def,
 143         MatchingRule    *amr,
 144     const char          **err
 145 )
 146 {
 147         MatchingRule    *smr;
 148         Syntax          *syn;
 149         Syntax          **compat_syn = NULL;
 150         int             code;
 151
 152         if( def->mrd_compat_syntaxes ) {
 153                 int i;
 154                 for( i=0; def->mrd_compat_syntaxes[i]; i++ ) {
 155                         /* just count em */
 156                 }
 157
 158                 compat_syn = ch_malloc( sizeof(Syntax *) * (i+1) );
 159
 160                 for( i=0; def->mrd_compat_syntaxes[i]; i++ ) {
 161                         compat_syn[i] = syn_find( def->mrd_compat_syntaxes[i] );
 162                         if( compat_syn[i] == NULL ) {
 163                                 return SLAP_SCHERR_SYN_NOT_FOUND;
 164                         }
 165                 }
 166
 167                 compat_syn[i] = NULL;
 168         }
 169
 170         smr = (MatchingRule *) ch_calloc( 1, sizeof(MatchingRule) );
 171         AC_MEMCPY( &smr->smr_mrule, mr, sizeof(LDAPMatchingRule));
 172
 173         /*
 174          * note: smr_bvoid uses the same memory of smr_mrule.mr_oid;
 175          * smr_oidlen is #defined as smr_bvoid.bv_len
 176          */
 177         smr->smr_bvoid.bv_val = smr->smr_mrule.mr_oid;
 178         smr->smr_oidlen = strlen( mr->mr_oid );
 179         smr->smr_usage = def->mrd_usage;
 180         smr->smr_compat_syntaxes = compat_syn;
 181         smr->smr_convert = def->mrd_convert;
 182         smr->smr_normalize = def->mrd_normalize;
 183         smr->smr_match = def->mrd_match;
 184         smr->smr_indexer = def->mrd_indexer;
 185         smr->smr_filter = def->mrd_filter;
 186         smr->smr_associated = amr;
 187
 188         if ( smr->smr_syntax_oid ) {
 189                 if ( (syn = syn_find(smr->smr_syntax_oid)) ) {
 190                         smr->smr_syntax = syn;
 191                 } else {
 192                         *err = smr->smr_syntax_oid;
 193                         return SLAP_SCHERR_SYN_NOT_FOUND;
 194                 }
 195         } else {
 196                 *err = "";
 197                 return SLAP_SCHERR_MR_INCOMPLETE;
 198         }
 199         code = mr_insert(smr,err);
 200         return code;
 201 }
 202
 203 int
 204 register_matching_rule(
 205         slap_mrule_defs_rec *def )
 206 {
 207         LDAPMatchingRule *mr;
 208         MatchingRule *amr = NULL;
 209         int             code;
 210         const char      *err;
 211
 212         if( def->mrd_usage == SLAP_MR_NONE &&
 213                 def->mrd_compat_syntaxes == NULL )
 214         {
 215 #ifdef NEW_LOGGING
 216                 LDAP_LOG( OPERATION, ERR,
 217                         "register_matching_rule: %s not usable\n", def->mrd_desc, 0, 0 );
 218 #else
 219                 Debug( LDAP_DEBUG_ANY, "register_matching_rule: not usable %s\n",
 220                     def->mrd_desc, 0, 0 );
 221 #endif
 222
 223                 return -1;
 224         }
 225
 226         if( def->mrd_associated != NULL ) {
 227                 amr = mr_find( def->mrd_associated );
 228
 229 #if 0
 230                 /* ignore for now */
 231
 232                 if( amr == NULL ) {
 233 #ifdef NEW_LOGGING
 234                         LDAP_LOG( OPERATION, ERR,
 235                            "register_matching_rule: could not locate associated "
 236                            "matching rule %s for %s\n",
 237                                 def->mrd_associated, def->mrd_desc, 0 );
 238 #else
 239                         Debug( LDAP_DEBUG_ANY, "register_matching_rule: could not locate "
 240                                 "associated matching rule %s for %s\n",
 241                                 def->mrd_associated, def->mrd_desc, 0 );
 242 #endif
 243
 244                         return -1;
 245                 }
 246 #endif
 247         }
 248
 249         mr = ldap_str2matchingrule( def->mrd_desc, &code, &err,
 250                 LDAP_SCHEMA_ALLOW_ALL );
 251         if ( !mr ) {
 252 #ifdef NEW_LOGGING
 253                 LDAP_LOG( OPERATION, ERR,
 254                         "register_matching_rule: %s before %s in %s.\n",
 255                         ldap_scherr2str(code), err, def->mrd_desc );
 256 #else
 257                 Debug( LDAP_DEBUG_ANY,
 258                         "Error in register_matching_rule: %s before %s in %s\n",
 259                     ldap_scherr2str(code), err, def->mrd_desc );
 260 #endif
 261
 262                 return( -1 );
 263         }
 264
 265         code = mr_add( mr, def, amr, &err );
 266
 267         ldap_memfree( mr );
 268
 269         if ( code ) {
 270 #ifdef NEW_LOGGING
 271                 LDAP_LOG( OPERATION, ERR,
 272                         "register_matching_rule: %s for %s in %s.\n",
 273                         scherr2str(code), err, def->mrd_desc );
 274 #else
 275                 Debug( LDAP_DEBUG_ANY,
 276                         "Error in register_matching_rule: %s for %s in %s\n",
 277                     scherr2str(code), err, def->mrd_desc );
 278 #endif
 279
 280                 return( -1 );
 281         }
 282
 283         return( 0 );
 284 }
 285
 286 void
 287 mru_destroy( void )
 288 {
 289         MatchingRuleUse *m, *n;
 290
 291         for (m=mru_list; m; m=n) {
 292                 n = m->smru_next;
 293                 if ( m->smru_str.bv_val ) {
 294                         ch_free( m->smru_str.bv_val );
 295                 }
 296                 /* memory borrowed from m->smru_mr */
 297                 m->smru_oid = NULL;
 298                 m->smru_names = NULL;
 299                 m->smru_desc = NULL;
 300
 301                 /* free what's left (basically
 302                  * smru_mruleuse.mru_applies_oids) */
 303                 ldap_matchingruleuse_free((LDAPMatchingRuleUse *)m);
 304         }
 305 }
 306
 307 int
 308 matching_rule_use_init( void )
 309 {
 310         MatchingRule    *mr;
 311         MatchingRuleUse **mru_ptr = &mru_list;
 312
 313 #ifdef NEW_LOGGING
 314         LDAP_LOG( OPERATION, INFO, "matching_rule_use_init\n", 0, 0, 0 );
 315 #else
 316         Debug( LDAP_DEBUG_TRACE, "matching_rule_use_init\n", 0, 0, 0 );
 317 #endif
 318
 319         for ( mr = mr_list; mr; mr = mr->smr_next ) {
 320                 AttributeType   *at;
 321                 MatchingRuleUse _mru, *mru = &_mru;
 322
 323                 char            **applies_oids = NULL;
 324
 325                 mr->smr_mru = NULL;
 326
 327                 /* hide rules marked as HIDE */
 328                 if ( mr->smr_usage & SLAP_MR_HIDE ) {
 329                         continue;
 330                 }
 331
 332                 /* hide rules not marked as designed for extensibility */
 333                 /* MR_EXT means can be used any attribute type whose
 334                  * syntax is same as the assertion syntax.
 335                  * Another mechanism is needed where rule can be used
 336                  * with attribute of other syntaxes.
 337                  * Framework doesn't support this (yet).
 338                  */
 339
 340                 if (!( ( mr->smr_usage & SLAP_MR_EXT )
 341                         || mr->smr_compat_syntaxes ) )
 342                 {
 343                         continue;
 344                 }
 345
 346                 memset( mru, 0, sizeof( MatchingRuleUse ) );
 347
 348                 /*
 349                  * Note: we're using the same values of the corresponding
 350                  * MatchingRule structure; maybe we'd copy them ...
 351                  */
 352                 mru->smru_mr = mr;
 353                 mru->smru_obsolete = mr->smr_obsolete;
 354                 mru->smru_applies_oids = NULL;
 355                 mru->smru_next = NULL;
 356                 mru->smru_oid = mr->smr_oid;
 357                 mru->smru_names = mr->smr_names;
 358                 mru->smru_desc = mr->smr_desc;
 359
 360 #ifdef NEW_LOGGING
 361                 LDAP_LOG( OPERATION, INFO, "    %s (%s): ",
 362                                 mru->smru_oid,
 363                                 mru->smru_names ? mru->smru_names[ 0 ] : "", 0 );
 364 #else
 365                 Debug( LDAP_DEBUG_TRACE, "    %s (%s): ",
 366                                 mru->smru_oid,
 367                                 mru->smru_names ? mru->smru_names[ 0 ] : "", 0 );
 368 #endif
 369
 370                 at = NULL;
 371                 for ( at_start( &at ); at; at_next( &at ) ) {
 372                         if( at->sat_flags & SLAP_AT_HIDE ) continue;
 373
 374                         if( mr_usable_with_at( mr, at )) {
 375                                 ldap_charray_add( &applies_oids, at->sat_cname.bv_val );
 376                         }
 377                 }
 378
 379                 /*
 380                  * Note: the matchingRules that are not used
 381                  * by any attributeType are not listed as
 382                  * matchingRuleUse
 383                  */
 384                 if ( applies_oids != NULL ) {
 385                         mru->smru_applies_oids = applies_oids;
 386 #ifdef NEW_LOGGING
 387                         {
 388                                 char *str = ldap_matchingruleuse2str( &mru->smru_mruleuse );
 389                                 LDAP_LOG( OPERATION, INFO, "matchingRuleUse: %s\n", str, 0, 0 );
 390                                 ldap_memfree( str );
 391                         }
 392 #else
 393                         {
 394                                 char *str = ldap_matchingruleuse2str( &mru->smru_mruleuse );
 395                                 Debug( LDAP_DEBUG_TRACE, "matchingRuleUse: %s\n", str, 0, 0 );
 396                                 ldap_memfree( str );
 397                         }
 398 #endif
 399
 400                         mru = (MatchingRuleUse *)ber_memalloc( sizeof( MatchingRuleUse ) );
 401                         /* call-forward from MatchingRule to MatchingRuleUse */
 402                         mr->smr_mru = mru;
 403                         /* copy static data to newly allocated struct */
 404                         *mru = _mru;
 405                         /* append the struct pointer to the end of the list */
 406                         *mru_ptr = mru;
 407                         /* update the list head pointer */
 408                         mru_ptr = &mru->smru_next;
 409                 }
 410         }
 411
 412         return( 0 );
 413 }
 414
 415 int mr_usable_with_at(
 416         MatchingRule *mr,
 417         AttributeType *at )
 418 {
 419         if( mr->smr_usage & SLAP_MR_EXT && (
 420                 mr->smr_syntax == at->sat_syntax ||
 421                 mr == at->sat_equality || mr == at->sat_approx ) )
 422         {
 423                 return 1;
 424         }
 425
 426         if ( mr->smr_compat_syntaxes ) {
 427                 int i;
 428                 for( i=0; mr->smr_compat_syntaxes[i]; i++ ) {
 429                         if( at->sat_syntax == mr->smr_compat_syntaxes[i] ) {
 430                                 return 1;
 431                         }
 432                 }
 433         }
 434         return 0;
 435 }
 436
 437 int mr_schema_info( Entry *e )
 438 {
 439         MatchingRule    *mr;
 440
 441         AttributeDescription *ad_matchingRules = slap_schema.si_ad_matchingRules;
 442
 443         for ( mr = mr_list; mr; mr = mr->smr_next ) {
 444                 if ( mr->smr_usage & SLAP_MR_HIDE ) {
 445                         /* skip hidden rules */
 446                         continue;
 447                 }
 448
 449                 if ( ! mr->smr_match ) {
 450                         /* skip rules without matching functions */
 451                         continue;
 452                 }
 453
 454                 if ( mr->smr_str.bv_val == NULL ) {
 455                         if ( ldap_matchingrule2bv( &mr->smr_mrule, &mr->smr_str ) == NULL ) {
 456                                 return -1;
 457                         }
 458                 }
 459 #if 0
 460                 Debug( LDAP_DEBUG_TRACE, "Merging mr [%lu] %s\n",
 461                         mr->smr_str.bv_len, mr->smr_str.bv_val, 0 );
 462 #endif
 463                 if( attr_merge_one( e, ad_matchingRules, &mr->smr_str ) )
 464                         return -1;
 465         }
 466         return 0;
 467 }
 468
 469 int mru_schema_info( Entry *e )
 470 {
 471         MatchingRuleUse *mru;
 472
 473         AttributeDescription *ad_matchingRuleUse
 474                 = slap_schema.si_ad_matchingRuleUse;
 475
 476         for ( mru = mru_list; mru; mru = mru->smru_next ) {
 477
 478                 assert( !( mru->smru_usage & SLAP_MR_HIDE ) );
 479
 480                 if ( mru->smru_str.bv_val == NULL ) {
 481                         if ( ldap_matchingruleuse2bv( &mru->smru_mruleuse, &mru->smru_str )
 482                                         == NULL ) {
 483                                 return -1;
 484                         }
 485                 }
 486
 487 #if 0
 488                 Debug( LDAP_DEBUG_TRACE, "Merging mru [%lu] %s\n",
 489                         mru->smru_str.bv_len, mru->smru_str.bv_val, 0 );
 490 #endif
 491                 if( attr_merge_one( e, ad_matchingRuleUse, &mru->smru_str ) )
 492                         return -1;
 493         }
 494         return 0;
 495 }