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

   1 /* $OpenLDAP$ */
   2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   3  *
   4  * Copyright 1998-2007 The OpenLDAP Foundation.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted only as authorized by the OpenLDAP
   9  * Public License.
  10  *
  11  * A copy of this license is available in the file LICENSE in the
  12  * top-level directory of the distribution or, alternatively, at
  13  * <http://www.OpenLDAP.org/license.html>.
  14  */
  15 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
  16  * All rights reserved.
  17  *
  18  * Redistribution and use in source and binary forms are permitted
  19  * provided that this notice is preserved and that due credit is given
  20  * to the University of Michigan at Ann Arbor. The name of the University
  21  * may not be used to endorse or promote products derived from this
  22  * software without specific prior written permission. This software
  23  * is provided ``as is'' without express or implied warranty.
  24  */
  25
  26 #include "portable.h"
  27
  28 #include <stdio.h>
  29
  30 #include <ac/socket.h>
  31 #include <ac/string.h>
  32 #include <ac/time.h>
  33
  34 #include "slap.h"
  35 #include "lutil.h"
  36
  37
  38 int
  39 do_modify(
  40     Operation   *op,
  41     SlapReply   *rs )
  42 {
  43         struct berval dn = BER_BVNULL;
  44         char            *last;
  45         ber_tag_t       tag;
  46         ber_len_t       len;
  47         char            textbuf[ SLAP_TEXT_BUFLEN ];
  48         size_t          textlen = sizeof( textbuf );
  49
  50         Debug( LDAP_DEBUG_TRACE, "do_modify\n", 0, 0, 0 );
  51
  52         /*
  53          * Parse the modify request.  It looks like this:
  54          *
  55          *      ModifyRequest := [APPLICATION 6] SEQUENCE {
  56          *              name    DistinguishedName,
  57          *              mods    SEQUENCE OF SEQUENCE {
  58          *                      operation       ENUMERATED {
  59          *                              add     (0),
  60          *                              delete  (1),
  61          *                              replace (2)
  62          *                      },
  63          *                      modification    SEQUENCE {
  64          *                              type    AttributeType,
  65          *                              values  SET OF AttributeValue
  66          *                      }
  67          *              }
  68          *      }
  69          */
  70
  71         if ( ber_scanf( op->o_ber, "{m" /*}*/, &dn ) == LBER_ERROR ) {
  72                 Debug( LDAP_DEBUG_ANY, "do_modify: ber_scanf failed\n", 0, 0, 0 );
  73
  74                 send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
  75                 return SLAPD_DISCONNECT;
  76         }
  77
  78         Debug( LDAP_DEBUG_ARGS, "do_modify: dn (%s)\n", dn.bv_val, 0, 0 );
  79
  80         rs->sr_err = slap_parse_modlist( op, rs, op->o_ber, &op->oq_modify );
  81         if ( rs->sr_err != LDAP_SUCCESS ) {
  82                 Debug( LDAP_DEBUG_ANY, "do_modify: slap_parse_modlist failed err=%d msg=%s\n",
  83                         rs->sr_err, rs->sr_text, 0 );
  84                 goto cleanup;
  85         }
  86
  87         if( get_ctrls( op, rs, 1 ) != LDAP_SUCCESS ) {
  88                 Debug( LDAP_DEBUG_ANY, "do_modify: get_ctrls failed\n", 0, 0, 0 );
  89                 goto cleanup;
  90         }
  91
  92         rs->sr_err = dnPrettyNormal( NULL, &dn, &op->o_req_dn, &op->o_req_ndn,
  93                 op->o_tmpmemctx );
  94         if( rs->sr_err != LDAP_SUCCESS ) {
  95                 Debug( LDAP_DEBUG_ANY,
  96                         "do_modify: invalid dn (%s)\n", dn.bv_val, 0, 0 );
  97                 send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid DN" );
  98                 goto cleanup;
  99         }
 100
 101         rs->sr_err = slap_mods_check( op, op->orm_modlist,
 102                 &rs->sr_text, textbuf, textlen, NULL );
 103
 104         if ( rs->sr_err != LDAP_SUCCESS ) {
 105                 send_ldap_result( op, rs );
 106                 goto cleanup;
 107         }
 108
 109         op->o_bd = frontendDB;
 110         rs->sr_err = frontendDB->be_modify( op, rs );
 111
 112 #ifdef LDAP_X_TXN
 113         if( rs->sr_err == LDAP_X_TXN_SPECIFY_OKAY ) {
 114                 /* skip cleanup */
 115                 return rs->sr_err;
 116         }
 117 #endif
 118
 119 cleanup:
 120         op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx );
 121         op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
 122         if ( op->orm_modlist != NULL ) slap_mods_free( op->orm_modlist, 1 );
 123
 124         return rs->sr_err;
 125 }
 126
 127 int
 128 fe_op_modify( Operation *op, SlapReply *rs )
 129 {
 130 #ifdef LDAP_DEBUG
 131         Modifications   *tmp;
 132 #endif
 133         int             manageDSAit;
 134         BackendDB       *op_be, *bd = op->o_bd;
 135         char            textbuf[ SLAP_TEXT_BUFLEN ];
 136         size_t          textlen = sizeof( textbuf );
 137
 138         if ( BER_BVISEMPTY( &op->o_req_ndn ) ) {
 139                 Debug( LDAP_DEBUG_ANY, "do_modify: root dse!\n", 0, 0, 0 );
 140
 141                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 142                         "modify upon the root DSE not supported" );
 143                 goto cleanup;
 144
 145         } else if ( bvmatch( &op->o_req_ndn, &frontendDB->be_schemandn ) ) {
 146                 Debug( LDAP_DEBUG_ANY, "do_modify: subschema subentry!\n", 0, 0, 0 );
 147
 148                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 149                         "modification of subschema subentry not supported" );
 150                 goto cleanup;
 151         }
 152
 153 #ifdef LDAP_DEBUG
 154         Debug( LDAP_DEBUG_ARGS, "modifications:\n", 0, 0, 0 );
 155
 156         for ( tmp = op->orm_modlist; tmp != NULL; tmp = tmp->sml_next ) {
 157                 Debug( LDAP_DEBUG_ARGS, "\t%s: %s\n",
 158                         tmp->sml_op == LDAP_MOD_ADD ? "add" :
 159                                 (tmp->sml_op == LDAP_MOD_INCREMENT ? "increment" :
 160                                 (tmp->sml_op == LDAP_MOD_DELETE ? "delete" :
 161                                         "replace")), tmp->sml_type.bv_val, 0 );
 162
 163                 if ( tmp->sml_values == NULL ) {
 164                         Debug( LDAP_DEBUG_ARGS, "%s\n",
 165                            "\t\tno values", NULL, NULL );
 166                 } else if ( BER_BVISNULL( &tmp->sml_values[ 0 ] ) ) {
 167                         Debug( LDAP_DEBUG_ARGS, "%s\n",
 168                            "\t\tzero values", NULL, NULL );
 169                 } else if ( BER_BVISNULL( &tmp->sml_values[ 1 ] ) ) {
 170                         Debug( LDAP_DEBUG_ARGS, "%s, length %ld\n",
 171                            "\t\tone value", (long) tmp->sml_values[0].bv_len, NULL );
 172                 } else {
 173                         Debug( LDAP_DEBUG_ARGS, "%s\n",
 174                            "\t\tmultiple values", NULL, NULL );
 175                 }
 176         }
 177
 178         if ( StatslogTest( LDAP_DEBUG_STATS ) ) {
 179                 char abuf[BUFSIZ/2], *ptr = abuf;
 180                 int len = 0;
 181
 182                 Statslog( LDAP_DEBUG_STATS, "%s MOD dn=\"%s\"\n",
 183                         op->o_log_prefix, op->o_req_dn.bv_val, 0, 0, 0 );
 184
 185                 for ( tmp = op->orm_modlist; tmp != NULL; tmp = tmp->sml_next ) {
 186                         if (len + 1 + tmp->sml_type.bv_len > sizeof(abuf)) {
 187                                 Statslog( LDAP_DEBUG_STATS, "%s MOD attr=%s\n",
 188                                     op->o_log_prefix, abuf, 0, 0, 0 );
 189
 190                                 len = 0;
 191                                 ptr = abuf;
 192
 193                                 if( 1 + tmp->sml_type.bv_len > sizeof(abuf)) {
 194                                         Statslog( LDAP_DEBUG_STATS, "%s MOD attr=%s\n",
 195                                                 op->o_log_prefix, tmp->sml_type.bv_val, 0, 0, 0 );
 196                                         continue;
 197                                 }
 198                         }
 199                         if (len) {
 200                                 *ptr++ = ' ';
 201                                 len++;
 202                         }
 203                         ptr = lutil_strcopy(ptr, tmp->sml_type.bv_val);
 204                         len += tmp->sml_type.bv_len;
 205                 }
 206                 if (len) {
 207                         Statslog( LDAP_DEBUG_STATS, "%s MOD attr=%s\n",
 208                                 op->o_log_prefix, abuf, 0, 0, 0 );
 209                 }
 210         }
 211 #endif  /* LDAP_DEBUG */
 212
 213         manageDSAit = get_manageDSAit( op );
 214
 215         /*
 216          * We could be serving multiple database backends.  Select the
 217          * appropriate one, or send a referral to our "referral server"
 218          * if we don't hold it.
 219          */
 220         op->o_bd = select_backend( &op->o_req_ndn, manageDSAit, 1 );
 221         if ( op->o_bd == NULL ) {
 222                 op->o_bd = bd;
 223                 rs->sr_ref = referral_rewrite( default_referral,
 224                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 225                 if ( !rs->sr_ref ) {
 226                         rs->sr_ref = default_referral;
 227                 }
 228
 229                 if ( rs->sr_ref != NULL ) {
 230                         rs->sr_err = LDAP_REFERRAL;
 231                         send_ldap_result( op, rs );
 232
 233                         if ( rs->sr_ref != default_referral ) {
 234                                 ber_bvarray_free( rs->sr_ref );
 235                         }
 236
 237                 } else {
 238                         send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 239                                 "no global superior knowledge" );
 240                 }
 241                 goto cleanup;
 242         }
 243
 244         /* If we've got a glued backend, check the real backend */
 245         op_be = op->o_bd;
 246         if ( SLAP_GLUE_INSTANCE( op->o_bd )) {
 247                 op->o_bd = select_backend( &op->o_req_ndn, manageDSAit, 0 );
 248         }
 249
 250         /* check restrictions */
 251         if ( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
 252                 send_ldap_result( op, rs );
 253                 goto cleanup;
 254         }
 255
 256         /* check for referrals */
 257         if ( backend_check_referrals( op, rs ) != LDAP_SUCCESS ) {
 258                 goto cleanup;
 259         }
 260
 261         rs->sr_err = slap_mods_obsolete_check( op, op->orm_modlist,
 262                 &rs->sr_text, textbuf, textlen );
 263         if ( rs->sr_err != LDAP_SUCCESS ) {
 264                 send_ldap_result( op, rs );
 265                 goto cleanup;
 266         }
 267
 268         /* check for modify/increment support */
 269         if ( op->orm_increment && !SLAP_INCREMENT( op->o_bd ) ) {
 270                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 271                         "modify/increment not supported in context" );
 272         }
 273
 274         /*
 275          * do the modify if 1 && (2 || 3)
 276          * 1) there is a modify function implemented in this backend;
 277          * 2) this backend is master for what it holds;
 278          * 3) it's a replica and the dn supplied is the update_ndn.
 279          */
 280         if ( op->o_bd->be_modify ) {
 281                 /* do the update here */
 282                 int repl_user = be_isupdate( op );
 283
 284                 /*
 285                  * Multimaster slapd does not have to check for replicator dn
 286                  * because it accepts each modify request
 287                  */
 288                 if ( !SLAP_SINGLE_SHADOW(op->o_bd) || repl_user ) {
 289                         int update = !BER_BVISEMPTY( &op->o_bd->be_update_ndn );
 290
 291                         op->o_bd = op_be;
 292
 293                         if ( !update ) {
 294                                 rs->sr_err = slap_mods_no_user_mod_check( op, op->orm_modlist,
 295                                         &rs->sr_text, textbuf, textlen );
 296                                 if ( rs->sr_err != LDAP_SUCCESS ) {
 297                                         send_ldap_result( op, rs );
 298                                         goto cleanup;
 299                                 }
 300                         }
 301                         op->o_bd->be_modify( op, rs );
 302
 303                 } else { /* send a referral */
 304                         BerVarray defref = op->o_bd->be_update_refs
 305                                 ? op->o_bd->be_update_refs : default_referral;
 306                         if ( defref != NULL ) {
 307                                 rs->sr_ref = referral_rewrite( defref,
 308                                         NULL, &op->o_req_dn,
 309                                         LDAP_SCOPE_DEFAULT );
 310                                 if ( rs->sr_ref == NULL ) {
 311                                         /* FIXME: must duplicate, because
 312                                          * overlays may muck with it */
 313                                         rs->sr_ref = defref;
 314                                 }
 315                                 rs->sr_err = LDAP_REFERRAL;
 316                                 send_ldap_result( op, rs );
 317                                 if ( rs->sr_ref != defref ) {
 318                                         ber_bvarray_free( rs->sr_ref );
 319                                 }
 320
 321                         } else {
 322                                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 323                                         "shadow context; no update referral" );
 324                         }
 325                 }
 326
 327         } else {
 328                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 329                     "operation not supported within namingContext" );
 330         }
 331
 332 cleanup:;
 333         op->o_bd = bd;
 334         return rs->sr_err;
 335 }
 336
 337 /*
 338  * Obsolete constraint checking.
 339  */
 340 int
 341 slap_mods_obsolete_check(
 342         Operation *op,
 343         Modifications *ml,
 344         const char **text,
 345         char *textbuf,
 346         size_t textlen )
 347 {
 348         if( get_relax( op ) ) return LDAP_SUCCESS;
 349
 350         for ( ; ml != NULL; ml = ml->sml_next ) {
 351                 if ( is_at_obsolete( ml->sml_desc->ad_type ) &&
 352                         (( ml->sml_op != LDAP_MOD_REPLACE &&
 353                                 ml->sml_op != LDAP_MOD_DELETE ) ||
 354                                         ml->sml_values != NULL ))
 355                 {
 356                         /*
 357                          * attribute is obsolete,
 358                          * only allow replace/delete with no values
 359                          */
 360                         snprintf( textbuf, textlen,
 361                                 "%s: attribute is obsolete",
 362                                 ml->sml_type.bv_val );
 363                         *text = textbuf;
 364                         return LDAP_CONSTRAINT_VIOLATION;
 365                 }
 366         }
 367
 368         return LDAP_SUCCESS;
 369 }
 370
 371 /*
 372  * No-user-modification constraint checking.
 373  */
 374 int
 375 slap_mods_no_user_mod_check(
 376         Operation *op,
 377         Modifications *ml,
 378         const char **text,
 379         char *textbuf,
 380         size_t textlen )
 381 {
 382         for ( ; ml != NULL; ml = ml->sml_next ) {
 383                 if ( !is_at_no_user_mod( ml->sml_desc->ad_type ) ) {
 384                         continue;
 385                 }
 386
 387                 if ( get_relax( op ) ) {
 388                         if ( ml->sml_desc->ad_type->sat_flags & SLAP_AT_MANAGEABLE ) {
 389                                 ml->sml_flags |= SLAP_MOD_MANAGING;
 390                                 continue;
 391                         }
 392
 393                         /* attribute not manageable */
 394                         snprintf( textbuf, textlen,
 395                                 "%s: no-user-modification attribute not manageable",
 396                                 ml->sml_type.bv_val );
 397
 398                 } else {
 399                         /* user modification disallowed */
 400                         snprintf( textbuf, textlen,
 401                                 "%s: no user modification allowed",
 402                                 ml->sml_type.bv_val );
 403                 }
 404
 405                 *text = textbuf;
 406                 return LDAP_CONSTRAINT_VIOLATION;
 407         }
 408
 409         return LDAP_SUCCESS;
 410 }
 411
 412 int
 413 slap_mods_no_repl_user_mod_check(
 414         Operation *op,
 415         Modifications *ml,
 416         const char **text,
 417         char *textbuf,
 418         size_t textlen )
 419 {
 420         Modifications *mods;
 421         Modifications *modp;
 422
 423         for ( mods = ml; mods != NULL; mods = mods->sml_next ) {
 424                 assert( mods->sml_op == LDAP_MOD_ADD );
 425
 426                 /* check doesn't already appear */
 427                 for ( modp = ml; modp != NULL; modp = modp->sml_next ) {
 428                         if ( mods->sml_desc == modp->sml_desc && mods != modp ) {
 429                                 snprintf( textbuf, textlen,
 430                                         "attribute '%s' provided more than once",
 431                                         mods->sml_desc->ad_cname.bv_val );
 432                                 *text = textbuf;
 433                                 return LDAP_TYPE_OR_VALUE_EXISTS;
 434                         }
 435                 }
 436         }
 437
 438         return LDAP_SUCCESS;
 439 }
 440
 441 /*
 442  * Do basic attribute type checking and syntax validation.
 443  */
 444 int slap_mods_check(
 445         Operation *op,
 446         Modifications *ml,
 447         const char **text,
 448         char *textbuf,
 449         size_t textlen,
 450         void *ctx )
 451 {
 452         int rc;
 453
 454         for( ; ml != NULL; ml = ml->sml_next ) {
 455                 AttributeDescription *ad = NULL;
 456
 457                 /* convert to attribute description */
 458                 if ( ml->sml_desc == NULL ) {
 459                         rc = slap_bv2ad( &ml->sml_type, &ml->sml_desc, text );
 460                         if( rc != LDAP_SUCCESS ) {
 461                                 if ( get_no_schema_check( op )) {
 462                                         rc = slap_bv2undef_ad( &ml->sml_type, &ml->sml_desc,
 463                                                 text, 0 );
 464                                 }
 465                         }
 466                         if( rc != LDAP_SUCCESS ) {
 467                                 snprintf( textbuf, textlen, "%s: %s",
 468                                         ml->sml_type.bv_val, *text );
 469                                 *text = textbuf;
 470                                 return rc;
 471                         }
 472                 }
 473
 474                 ad = ml->sml_desc;
 475
 476                 if( slap_syntax_is_binary( ad->ad_type->sat_syntax )
 477                         && !slap_ad_is_binary( ad ))
 478                 {
 479                         /* attribute requires binary transfer */
 480                         snprintf( textbuf, textlen,
 481                                 "%s: requires ;binary transfer",
 482                                 ml->sml_type.bv_val );
 483                         *text = textbuf;
 484                         return LDAP_UNDEFINED_TYPE;
 485                 }
 486
 487                 if( !slap_syntax_is_binary( ad->ad_type->sat_syntax )
 488                         && slap_ad_is_binary( ad ))
 489                 {
 490                         /* attribute does not require binary transfer */
 491                         snprintf( textbuf, textlen,
 492                                 "%s: disallows ;binary transfer",
 493                                 ml->sml_type.bv_val );
 494                         *text = textbuf;
 495                         return LDAP_UNDEFINED_TYPE;
 496                 }
 497
 498                 if( slap_ad_is_tag_range( ad )) {
 499                         /* attribute requires binary transfer */
 500                         snprintf( textbuf, textlen,
 501                                 "%s: inappropriate use of tag range option",
 502                                 ml->sml_type.bv_val );
 503                         *text = textbuf;
 504                         return LDAP_UNDEFINED_TYPE;
 505                 }
 506
 507 #if 0
 508                 if ( is_at_obsolete( ad->ad_type ) &&
 509                         (( ml->sml_op != LDAP_MOD_REPLACE &&
 510                                 ml->sml_op != LDAP_MOD_DELETE ) ||
 511                                         ml->sml_values != NULL ))
 512                 {
 513                         /*
 514                          * attribute is obsolete,
 515                          * only allow replace/delete with no values
 516                          */
 517                         snprintf( textbuf, textlen,
 518                                 "%s: attribute is obsolete",
 519                                 ml->sml_type.bv_val );
 520                         *text = textbuf;
 521                         return LDAP_CONSTRAINT_VIOLATION;
 522                 }
 523 #endif
 524
 525                 if ( ml->sml_op == LDAP_MOD_INCREMENT &&
 526 #ifdef SLAPD_REAL_SYNTAX
 527                         !is_at_syntax( ad->ad_type, SLAPD_REAL_SYNTAX ) &&
 528 #endif
 529                         !is_at_syntax( ad->ad_type, SLAPD_INTEGER_SYNTAX ) )
 530                 {
 531                         /*
 532                          * attribute values must be INTEGER or REAL
 533                          */
 534                         snprintf( textbuf, textlen,
 535                                 "%s: attribute syntax inappropriate for increment",
 536                                 ml->sml_type.bv_val );
 537                         *text = textbuf;
 538                         return LDAP_CONSTRAINT_VIOLATION;
 539                 }
 540
 541                 /*
 542                  * check values
 543                  */
 544                 if( ml->sml_values != NULL ) {
 545                         ber_len_t nvals;
 546                         slap_syntax_validate_func *validate =
 547                                 ad->ad_type->sat_syntax->ssyn_validate;
 548                         slap_syntax_transform_func *pretty =
 549                                 ad->ad_type->sat_syntax->ssyn_pretty;
 550
 551                         if( !pretty && !validate ) {
 552                                 *text = "no validator for syntax";
 553                                 snprintf( textbuf, textlen,
 554                                         "%s: no validator for syntax %s",
 555                                         ml->sml_type.bv_val,
 556                                         ad->ad_type->sat_syntax->ssyn_oid );
 557                                 *text = textbuf;
 558                                 return LDAP_INVALID_SYNTAX;
 559                         }
 560
 561                         /*
 562                          * check that each value is valid per syntax
 563                          *      and pretty if appropriate
 564                          */
 565                         for ( nvals = 0; !BER_BVISNULL( &ml->sml_values[nvals] ); nvals++ ) {
 566                                 struct berval pval;
 567
 568                                 if ( pretty ) {
 569                                         rc = ordered_value_pretty( ad,
 570                                                 &ml->sml_values[nvals], &pval, ctx );
 571                                 } else {
 572                                         rc = ordered_value_validate( ad,
 573                                                 &ml->sml_values[nvals], ml->sml_op );
 574                                 }
 575
 576                                 if( rc != 0 ) {
 577                                         snprintf( textbuf, textlen,
 578                                                 "%s: value #%ld invalid per syntax",
 579                                                 ml->sml_type.bv_val, (long) nvals );
 580                                         *text = textbuf;
 581                                         return LDAP_INVALID_SYNTAX;
 582                                 }
 583
 584                                 if( pretty ) {
 585                                         ber_memfree_x( ml->sml_values[nvals].bv_val, ctx );
 586                                         ml->sml_values[nvals] = pval;
 587                                 }
 588                         }
 589
 590                         /*
 591                          * a rough single value check... an additional check is needed
 592                          * to catch add of single value to existing single valued attribute
 593                          */
 594                         if ((ml->sml_op == LDAP_MOD_ADD || ml->sml_op == LDAP_MOD_REPLACE)
 595                                 && nvals > 1 && is_at_single_value( ad->ad_type ))
 596                         {
 597                                 snprintf( textbuf, textlen,
 598                                         "%s: multiple values provided",
 599                                         ml->sml_type.bv_val );
 600                                 *text = textbuf;
 601                                 return LDAP_CONSTRAINT_VIOLATION;
 602                         }
 603
 604                         /* if the type has a normalizer, generate the
 605                          * normalized values. otherwise leave them NULL.
 606                          *
 607                          * this is different from the rule for attributes
 608                          * in an entry - in an attribute list, the normalized
 609                          * value is set equal to the non-normalized value
 610                          * when there is no normalizer.
 611                          */
 612                         if( nvals && ad->ad_type->sat_equality &&
 613                                 ad->ad_type->sat_equality->smr_normalize )
 614                         {
 615                                 ml->sml_nvalues = ber_memalloc_x(
 616                                         (nvals+1)*sizeof(struct berval), ctx );
 617
 618                                 for ( nvals = 0; !BER_BVISNULL( &ml->sml_values[nvals] ); nvals++ ) {
 619                                         rc = ordered_value_normalize(
 620                                                 SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
 621                                                 ad,
 622                                                 ad->ad_type->sat_equality,
 623                                                 &ml->sml_values[nvals], &ml->sml_nvalues[nvals], ctx );
 624                                         if ( rc ) {
 625                                                 Debug( LDAP_DEBUG_ANY,
 626                                                         "<= str2entry NULL (ssyn_normalize %d)\n",
 627                                                         rc, 0, 0 );
 628                                                 snprintf( textbuf, textlen,
 629                                                         "%s: value #%ld normalization failed",
 630                                                         ml->sml_type.bv_val, (long) nvals );
 631                                                 *text = textbuf;
 632                                                 return rc;
 633                                         }
 634                                 }
 635
 636                                 BER_BVZERO( &ml->sml_nvalues[nvals] );
 637                         }
 638
 639                         /* check for duplicates, but ignore Deletes.
 640                          */
 641                         if( nvals > 1 && ml->sml_op != LDAP_MOD_DELETE ) {
 642 #define SLAP_MODS_CHECK_QUICKSORT
 643 #ifndef SLAP_MODS_CHECK_QUICKSORT
 644                                 int             i, j, rc, match;
 645                                 MatchingRule *mr = ad->ad_type->sat_equality;
 646
 647                                 for ( i = 1; i < nvals ; i++ ) {
 648                                         /* test asserted values against themselves */
 649                                         for( j = 0; j < i; j++ ) {
 650                                                 rc = ordered_value_match( &match, ml->sml_desc, mr,
 651                                                         SLAP_MR_EQUALITY
 652                                                                 | SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX
 653                                                                 | SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH
 654                                                                 | SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH,
 655                                                         ml->sml_nvalues
 656                                                                 ? &ml->sml_nvalues[i]
 657                                                                 : &ml->sml_values[i],
 658                                                         ml->sml_nvalues
 659                                                                 ? &ml->sml_nvalues[j]
 660                                                                 : &ml->sml_values[j],
 661                                                         text );
 662                                                 if ( rc == LDAP_SUCCESS && match == 0 ) {
 663                                                         /* value exists already */
 664                                                         snprintf( textbuf, textlen,
 665                                                                 "%s: value #%d provided more than once",
 666                                                                 ml->sml_desc->ad_cname.bv_val, j );
 667                                                         *text = textbuf;
 668                                                         return LDAP_TYPE_OR_VALUE_EXISTS;
 669
 670                                                 } else if ( rc != LDAP_SUCCESS ) {
 671                                                         return rc;
 672                                                 }
 673                                         }
 674                                 }
 675 #else   /* SLAP_MODS_CHECK_QUICKSORT */
 676
 677 /* Quicksort + Insertion sort for small arrays */
 678
 679 #define SMALL   8
 680 #define SWAP(a,b,tmp)   tmp=(a);(a)=(b);(b)=tmp
 681 #define COMP(a,b)       match=0; rc = ordered_value_match( &match, \
 682                                                 ml->sml_desc, mr, SLAP_MR_EQUALITY \
 683                                                                 | SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX \
 684                                                                 | SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH \
 685                                                                 | SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH, \
 686                                                                 &(a), &(b), text );
 687
 688                                         MatchingRule *mr = ad->ad_type->sat_equality;
 689                                         int istack[sizeof(int)*16];
 690                                         int i, j, k, l, ir, jstack, match, *ix, itmp;
 691                                         struct berval a, *cv;
 692
 693 /* If PRESERVE_ORDER is defined only the index array is sorted; the
 694  * actual values are left in their incoming order. Otherwise, the
 695  * only reason to keep the index array is to identify the offending
 696  * value when duplicates are found.
 697  */
 698 #define PRESERVE_ORDER
 699 #ifndef PRESERVE_ORDER
 700                                         struct berval va, *v, *nv, bvtmp;
 701
 702 #define IX(x)   x
 703 #define EXCH(x,y)       SWAP(ix[x],ix[y],itmp); SWAP(cv[x],cv[y],bvtmp); \
 704         if (nv) {SWAP(v[x],v[y],bvtmp);}
 705 #define SETA(x) itmp = ix[x]; a = cv[x]; if (nv) va=v[x]
 706 #define GETA(x) ix[x] = itmp; cv[x] = a; if (nv) v[x]=va
 707 #define SET(x,y)        ix[x] = ix[y]; cv[x] = cv[y]; if (nv) v[x]=v[y]
 708
 709                                         v = ml->sml_values;
 710                                         nv = ml->sml_nvalues;
 711
 712 #else   /* PRESERVE_ORDER */
 713
 714 #define IX(x)   ix[x]
 715 #define EXCH(x,y)       SWAP(ix[x],ix[y],itmp)
 716 #define SETA(x) itmp = ix[x]; a = cv[itmp]
 717 #define GETA(x) ix[x] = itmp;
 718 #define SET(x,y)        ix[x] = ix[y]
 719
 720 #endif  /* PRESERVE_ORDER */
 721
 722                                         cv = ml->sml_nvalues ? ml->sml_nvalues : ml->sml_values;
 723                                         if ( ad == slap_schema.si_ad_objectClass )
 724                                                 mr = NULL;      /* shortcut matching */
 725
 726                                         /* record indices to preserve input ordering */
 727                                         ix = slap_sl_malloc( nvals * sizeof(int), ctx );
 728                                         for (i=0; i<nvals; i++) ix[i] = i;
 729
 730                                         ir = nvals-1;
 731                                         l = 0;
 732                                         jstack = 0;
 733
 734                                         for(;;) {
 735                                                 if (ir - l < SMALL) {   /* Insertion sort */
 736                                                         match=1;
 737                                                         for (j=l+1;j<=ir;j++) {
 738                                                                 SETA(j);
 739                                                                 for (i=j-1;i>=0;i--) {
 740                                                                         COMP(cv[IX(i)], a);
 741                                                                         if ( match <= 0 )
 742                                                                                 break;
 743                                                                         SET(i+1,i);
 744                                                                 }
 745                                                                 GETA(i+1);
 746                                                                 if ( match == 0 ) goto done;
 747                                                         }
 748                                                         if ( jstack == 0 ) break;
 749                                                         if ( match == 0 ) break;
 750                                                         ir = istack[jstack--];
 751                                                         l = istack[jstack--];
 752                                                 } else {
 753                                                         k = (l + ir) >> 1;      /* Choose median of left, center, right */
 754                                                         EXCH(k, l+1);
 755                                                         COMP( cv[IX(l)], cv[IX(ir)] );
 756                                                         if ( match > 0 ) {
 757                                                                 EXCH(l, ir);
 758                                                         } else if ( match == 0 ) {
 759                                                                 i = ir;
 760                                                                 break;
 761                                                         }
 762                                                         COMP( cv[IX(l+1)], cv[IX(ir)] );
 763                                                         if ( match > 0 ) {
 764                                                                 EXCH(l+1, ir);
 765                                                         } else if ( match == 0 ) {
 766                                                                 i = ir;
 767                                                                 break;
 768                                                         }
 769                                                         COMP( cv[IX(l)], cv[IX(l+1)] );
 770                                                         if ( match > 0 ) {
 771                                                                 EXCH(l, l+1);
 772                                                         } else if ( match == 0 ) {
 773                                                                 i = l;
 774                                                                 break;
 775                                                         }
 776                                                         i = l+1;
 777                                                         j = ir;
 778                                                         a = cv[IX(i)];
 779                                                         for(;;) {
 780                                                                 do {
 781                                                                         i++;
 782                                                                         COMP( cv[IX(i)], a );
 783                                                                 } while( match < 0 );
 784                                                                 while( match > 0 ) {
 785                                                                         j--;
 786                                                                         COMP( cv[IX(j)], a );
 787                                                                 }
 788                                                                 if (j < i) {
 789                                                                         match = 1;
 790                                                                         break;
 791                                                                 }
 792                                                                 if ( match == 0 ) {
 793                                                                         i = l+1;
 794                                                                         break;
 795                                                                 }
 796                                                                 EXCH(i,j);
 797                                                         }
 798                                                         if ( match == 0 )
 799                                                                 break;
 800                                                         EXCH(l+1,j);
 801                                                         jstack += 2;
 802                                                         if (ir-i+1 >= j) {
 803                                                                 istack[jstack] = ir;
 804                                                                 istack[jstack-1] = i;
 805                                                                 ir = j;
 806                                                         } else {
 807                                                                 istack[jstack] = j;
 808                                                                 istack[jstack-1] = l;
 809                                                                 l = i;
 810                                                 }
 811                                         }
 812                                 }
 813 done:
 814                                 if ( i >= 0 )
 815                                         j = ix[i];
 816
 817                                 slap_sl_free( ix, ctx );
 818
 819                                 if ( rc != LDAP_SUCCESS ) {
 820                                         return rc;
 821                                 } else if ( match == 0 ) {
 822                                         /* value exists already */
 823                                         assert( i >= 0 );
 824                                         assert( i < nvals );
 825                                         snprintf( textbuf, textlen,
 826                                                 "%s: value #%d provided more than once",
 827                                                 ml->sml_desc->ad_cname.bv_val, j );
 828                                         *text = textbuf;
 829                                         return LDAP_TYPE_OR_VALUE_EXISTS;
 830                                 }
 831 #endif  /* SLAP_MODS_CHECK_QUICKSORT */
 832                         }
 833                 }
 834         }
 835
 836         return LDAP_SUCCESS;
 837 }
 838
 839 /* Enter with bv->bv_len = sizeof buffer, returns with
 840  * actual length of string
 841  */
 842 void slap_timestamp( time_t *tm, struct berval *bv )
 843 {
 844         struct tm *ltm;
 845 #ifdef HAVE_GMTIME_R
 846         struct tm ltm_buf;
 847
 848         ltm = gmtime_r( tm, &ltm_buf );
 849 #else
 850         ldap_pvt_thread_mutex_lock( &gmtime_mutex );
 851         ltm = gmtime( tm );
 852 #endif
 853
 854         bv->bv_len = lutil_gentime( bv->bv_val, bv->bv_len, ltm );
 855
 856 #ifndef HAVE_GMTIME_R
 857         ldap_pvt_thread_mutex_unlock( &gmtime_mutex );
 858 #endif
 859 }
 860
 861 /* Called for all modify and modrdn ops. If the current op was replicated
 862  * from elsewhere, all of the attrs should already be present.
 863  */
 864 void slap_mods_opattrs(
 865         Operation *op,
 866         Modifications **modsp,
 867         int manage_ctxcsn )
 868 {
 869         struct berval name, timestamp, csn = BER_BVNULL;
 870         struct berval nname;
 871         char timebuf[ LDAP_LUTIL_GENTIME_BUFSIZE ];
 872         char csnbuf[ LDAP_LUTIL_CSNSTR_BUFSIZE ];
 873         Modifications *mod, **modtail, *modlast;
 874         int gotcsn = 0, gotmname = 0, gotmtime = 0;
 875
 876         if ( SLAP_LASTMOD( op->o_bd ) && !op->orm_no_opattrs ) {
 877                 char *ptr;
 878                 timestamp.bv_val = timebuf;
 879                 for ( modtail = modsp; *modtail; modtail = &(*modtail)->sml_next ) {
 880                         if ( (*modtail)->sml_op != LDAP_MOD_ADD &&
 881                                 (*modtail)->sml_op != LDAP_MOD_REPLACE )
 882                         {
 883                                 continue;
 884                         }
 885
 886                         if ( (*modtail)->sml_desc == slap_schema.si_ad_entryCSN )
 887                         {
 888                                 csn = (*modtail)->sml_values[0];
 889                                 gotcsn = 1;
 890
 891                         } else if ( (*modtail)->sml_desc == slap_schema.si_ad_modifiersName )
 892                         {
 893                                 gotmname = 1;
 894
 895                         } else if ( (*modtail)->sml_desc == slap_schema.si_ad_modifyTimestamp )
 896                         {
 897                                 gotmtime = 1;
 898                         }
 899                 }
 900
 901                 if ( BER_BVISEMPTY( &op->o_csn )) {
 902                         if ( !gotcsn ) {
 903                                 csn.bv_val = csnbuf;
 904                                 csn.bv_len = sizeof( csnbuf );
 905                                 slap_get_csn( op, &csn, manage_ctxcsn );
 906
 907                         } else {
 908                                 if ( manage_ctxcsn ) {
 909                                         slap_queue_csn( op, &csn );
 910                                 }
 911                         }
 912
 913                 } else {
 914                         csn = op->o_csn;
 915                 }
 916
 917                 ptr = ber_bvchr( &csn, '#' );
 918                 if ( ptr ) {
 919                         timestamp.bv_len = STRLENOF("YYYYMMDDHHMMSSZ");
 920                         AC_MEMCPY( timebuf, csn.bv_val, timestamp.bv_len );
 921                         timebuf[timestamp.bv_len-1] = 'Z';
 922                         timebuf[timestamp.bv_len] = '\0';
 923
 924                 } else {
 925                         time_t now = slap_get_time();
 926
 927                         timestamp.bv_len = sizeof(timebuf);
 928
 929                         slap_timestamp( &now, &timestamp );
 930                 }
 931
 932                 if ( BER_BVISEMPTY( &op->o_dn ) ) {
 933                         BER_BVSTR( &name, SLAPD_ANONYMOUS );
 934                         nname = name;
 935
 936                 } else {
 937                         name = op->o_dn;
 938                         nname = op->o_ndn;
 939                 }
 940
 941                 if ( !gotcsn ) {
 942                         mod = (Modifications *) ch_malloc( sizeof( Modifications ) );
 943                         mod->sml_op = LDAP_MOD_REPLACE;
 944                         mod->sml_flags = SLAP_MOD_INTERNAL;
 945                         mod->sml_next = NULL;
 946                         BER_BVZERO( &mod->sml_type );
 947                         mod->sml_desc = slap_schema.si_ad_entryCSN;
 948                         mod->sml_values = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
 949                         ber_dupbv( &mod->sml_values[0], &csn );
 950                         BER_BVZERO( &mod->sml_values[1] );
 951                         assert( !BER_BVISNULL( &mod->sml_values[0] ) );
 952                         mod->sml_nvalues = NULL;
 953                         *modtail = mod;
 954                         modlast = mod;
 955                         modtail = &mod->sml_next;
 956                 }
 957
 958                 if ( !gotmname ) {
 959                         mod = (Modifications *) ch_malloc( sizeof( Modifications ) );
 960                         mod->sml_op = LDAP_MOD_REPLACE;
 961                         mod->sml_flags = SLAP_MOD_INTERNAL;
 962                         mod->sml_next = NULL;
 963                         BER_BVZERO( &mod->sml_type );
 964                         mod->sml_desc = slap_schema.si_ad_modifiersName;
 965                         mod->sml_values = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
 966                         ber_dupbv( &mod->sml_values[0], &name );
 967                         BER_BVZERO( &mod->sml_values[1] );
 968                         assert( !BER_BVISNULL( &mod->sml_values[0] ) );
 969                         mod->sml_nvalues =
 970                                 (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
 971                         ber_dupbv( &mod->sml_nvalues[0], &nname );
 972                         BER_BVZERO( &mod->sml_nvalues[1] );
 973                         assert( !BER_BVISNULL( &mod->sml_nvalues[0] ) );
 974                         *modtail = mod;
 975                         modtail = &mod->sml_next;
 976                 }
 977
 978                 if ( !gotmtime ) {
 979                         mod = (Modifications *) ch_malloc( sizeof( Modifications ) );
 980                         mod->sml_op = LDAP_MOD_REPLACE;
 981                         mod->sml_flags = SLAP_MOD_INTERNAL;
 982                         mod->sml_next = NULL;
 983                         BER_BVZERO( &mod->sml_type );
 984                         mod->sml_desc = slap_schema.si_ad_modifyTimestamp;
 985                         mod->sml_values = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
 986                         ber_dupbv( &mod->sml_values[0], &timestamp );
 987                         BER_BVZERO( &mod->sml_values[1] );
 988                         assert( !BER_BVISNULL( &mod->sml_values[0] ) );
 989                         mod->sml_nvalues = NULL;
 990                         *modtail = mod;
 991                         modtail = &mod->sml_next;
 992                 }
 993         }
 994 }
 995
 996 int
 997 slap_parse_modlist(
 998         Operation *op,
 999         SlapReply *rs,
1000         BerElement *ber,
1001         req_modify_s *ms )
1002 {
1003         ber_tag_t       tag;
1004         ber_len_t       len;
1005         char            *last;
1006         Modifications   **modtail = &ms->rs_modlist;
1007
1008         ms->rs_modlist = NULL;
1009         ms->rs_increment = 0;
1010
1011         rs->sr_err = LDAP_SUCCESS;
1012
1013         /* collect modifications & save for later */
1014         for ( tag = ber_first_element( ber, &len, &last );
1015                 tag != LBER_DEFAULT;
1016                 tag = ber_next_element( ber, &len, last ) )
1017         {
1018                 ber_int_t mop;
1019                 Modifications tmp, *mod;
1020
1021                 tmp.sml_nvalues = NULL;
1022
1023                 if ( ber_scanf( ber, "{e{m[W]}}", &mop,
1024                     &tmp.sml_type, &tmp.sml_values ) == LBER_ERROR )
1025                 {
1026                         rs->sr_text = "decoding modlist error";
1027                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1028                         goto done;
1029                 }
1030
1031                 mod = (Modifications *) ch_malloc( sizeof(Modifications) );
1032                 mod->sml_op = mop;
1033                 mod->sml_flags = 0;
1034                 mod->sml_type = tmp.sml_type;
1035                 mod->sml_values = tmp.sml_values;
1036                 mod->sml_nvalues = NULL;
1037                 mod->sml_desc = NULL;
1038                 mod->sml_next = NULL;
1039                 *modtail = mod;
1040
1041                 switch( mop ) {
1042                 case LDAP_MOD_ADD:
1043                         if ( mod->sml_values == NULL ) {
1044                                 Debug( LDAP_DEBUG_ANY, "slap_parse_modlist: "
1045                                         "modify/add operation (%ld) requires values\n",
1046                                         (long) mop, 0, 0 );
1047
1048                                 rs->sr_text = "modify/add operation requires values";
1049                                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1050                                 goto done;
1051                         }
1052
1053                         /* fall through */
1054
1055                 case LDAP_MOD_DELETE:
1056                 case LDAP_MOD_REPLACE:
1057                         break;
1058
1059                 case LDAP_MOD_INCREMENT:
1060                         if( op->o_protocol >= LDAP_VERSION3 ) {
1061                                 ms->rs_increment++;
1062                                 if ( mod->sml_values == NULL ) {
1063                                         Debug( LDAP_DEBUG_ANY, "slap_parse_modlist: "
1064                                                 "modify/increment operation (%ld) requires value\n",
1065                                                 (long) mop, 0, 0 );
1066
1067                                         rs->sr_text = "modify/increment operation requires value";
1068                                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1069                                         goto done;
1070                                 }
1071
1072                                 if ( !BER_BVISNULL( &mod->sml_values[ 1 ] ) ) {
1073                                         Debug( LDAP_DEBUG_ANY,  "slap_parse_modlist: modify/increment "
1074                                                 "operation (%ld) requires single value\n",
1075                                                 (long) mop, 0, 0 );
1076
1077                                         rs->sr_text = "modify/increment operation requires single value";
1078                                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1079                                         goto done;
1080                                 }
1081
1082                                 break;
1083                         }
1084                         /* fall thru */
1085
1086                 default:
1087                         Debug( LDAP_DEBUG_ANY, "slap_parse_modlist: "
1088                                 "unrecognized modify operation (%ld)\n",
1089                                 (long) mop, 0, 0 );
1090
1091                         rs->sr_text = "unrecognized modify operation";
1092                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1093                         goto done;
1094                 }
1095
1096                 modtail = &mod->sml_next;
1097         }
1098         *modtail = NULL;
1099
1100 done:
1101         if ( rs->sr_err != LDAP_SUCCESS ) {
1102                 slap_mods_free( ms->rs_modlist, 1 );
1103                 ms->rs_modlist = NULL;
1104                 ms->rs_increment = 0;
1105         }
1106
1107         return rs->sr_err;
1108 }
1109