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 1998-2014 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            textbuf[ SLAP_TEXT_BUFLEN ];
  45         size_t          textlen = sizeof( textbuf );
  46 #ifdef LDAP_DEBUG
  47         Modifications   *tmp;
  48 #endif
  49
  50         Debug( LDAP_DEBUG_TRACE, "%s do_modify\n",
  51                 op->o_log_prefix, 0, 0 );
  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, "%s do_modify: ber_scanf failed\n",
  73                         op->o_log_prefix, 0, 0 );
  74                 send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
  75                 return SLAPD_DISCONNECT;
  76         }
  77
  78         Debug( LDAP_DEBUG_ARGS, "%s do_modify: dn (%s)\n",
  79                 op->o_log_prefix, dn.bv_val, 0 );
  80
  81         rs->sr_err = slap_parse_modlist( op, rs, op->o_ber, &op->oq_modify );
  82         if ( rs->sr_err != LDAP_SUCCESS ) {
  83                 Debug( LDAP_DEBUG_ANY, "%s do_modify: slap_parse_modlist failed err=%d msg=%s\n",
  84                         op->o_log_prefix, rs->sr_err, rs->sr_text );
  85                 send_ldap_result( op, rs );
  86                 goto cleanup;
  87         }
  88
  89         if( get_ctrls( op, rs, 1 ) != LDAP_SUCCESS ) {
  90                 Debug( LDAP_DEBUG_ANY, "%s do_modify: get_ctrls failed\n",
  91                         op->o_log_prefix, 0, 0 );
  92                 /* get_ctrls has sent results.  Now clean up. */
  93                 goto cleanup;
  94         }
  95
  96         rs->sr_err = dnPrettyNormal( NULL, &dn, &op->o_req_dn, &op->o_req_ndn,
  97                 op->o_tmpmemctx );
  98         if( rs->sr_err != LDAP_SUCCESS ) {
  99                 Debug( LDAP_DEBUG_ANY, "%s do_modify: invalid dn (%s)\n",
 100                         op->o_log_prefix, dn.bv_val, 0 );
 101                 send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid DN" );
 102                 goto cleanup;
 103         }
 104
 105         op->orm_no_opattrs = 0;
 106
 107 #ifdef LDAP_DEBUG
 108         Debug( LDAP_DEBUG_ARGS, "%s modifications:\n",
 109                         op->o_log_prefix, 0, 0 );
 110
 111         for ( tmp = op->orm_modlist; tmp != NULL; tmp = tmp->sml_next ) {
 112                 Debug( LDAP_DEBUG_ARGS, "\t%s: %s\n",
 113                         tmp->sml_op == LDAP_MOD_ADD ? "add" :
 114                                 (tmp->sml_op == LDAP_MOD_INCREMENT ? "increment" :
 115                                 (tmp->sml_op == LDAP_MOD_DELETE ? "delete" :
 116                                         "replace")), tmp->sml_type.bv_val, 0 );
 117
 118                 if ( tmp->sml_values == NULL ) {
 119                         Debug( LDAP_DEBUG_ARGS, "%s\n",
 120                            "\t\tno values", NULL, NULL );
 121                 } else if ( BER_BVISNULL( &tmp->sml_values[ 0 ] ) ) {
 122                         Debug( LDAP_DEBUG_ARGS, "%s\n",
 123                            "\t\tzero values", NULL, NULL );
 124                 } else if ( BER_BVISNULL( &tmp->sml_values[ 1 ] ) ) {
 125                         Debug( LDAP_DEBUG_ARGS, "%s, length %ld\n",
 126                            "\t\tone value", (long) tmp->sml_values[0].bv_len, NULL );
 127                 } else {
 128                         Debug( LDAP_DEBUG_ARGS, "%s\n",
 129                            "\t\tmultiple values", NULL, NULL );
 130                 }
 131         }
 132
 133         if ( StatslogTest( LDAP_DEBUG_STATS ) ) {
 134                 char abuf[BUFSIZ/2], *ptr = abuf;
 135                 int len = 0;
 136
 137                 Statslog( LDAP_DEBUG_STATS, "%s MOD dn=\"%s\"\n",
 138                         op->o_log_prefix, op->o_req_dn.bv_val, 0, 0, 0 );
 139
 140                 for ( tmp = op->orm_modlist; tmp != NULL; tmp = tmp->sml_next ) {
 141                         if (len + 1 + tmp->sml_type.bv_len > sizeof(abuf)) {
 142                                 Statslog( LDAP_DEBUG_STATS, "%s MOD attr=%s\n",
 143                                     op->o_log_prefix, abuf, 0, 0, 0 );
 144
 145                                 len = 0;
 146                                 ptr = abuf;
 147
 148                                 if( 1 + tmp->sml_type.bv_len > sizeof(abuf)) {
 149                                         Statslog( LDAP_DEBUG_STATS, "%s MOD attr=%s\n",
 150                                                 op->o_log_prefix, tmp->sml_type.bv_val, 0, 0, 0 );
 151                                         continue;
 152                                 }
 153                         }
 154                         if (len) {
 155                                 *ptr++ = ' ';
 156                                 len++;
 157                         }
 158                         ptr = lutil_strcopy(ptr, tmp->sml_type.bv_val);
 159                         len += tmp->sml_type.bv_len;
 160                 }
 161                 if (len) {
 162                         Statslog( LDAP_DEBUG_STATS, "%s MOD attr=%s\n",
 163                                 op->o_log_prefix, abuf, 0, 0, 0 );
 164                 }
 165         }
 166 #endif  /* LDAP_DEBUG */
 167
 168         rs->sr_err = slap_mods_check( op, op->orm_modlist,
 169                 &rs->sr_text, textbuf, textlen, NULL );
 170
 171         if ( rs->sr_err != LDAP_SUCCESS ) {
 172                 send_ldap_result( op, rs );
 173                 goto cleanup;
 174         }
 175
 176         op->o_bd = frontendDB;
 177         rs->sr_err = frontendDB->be_modify( op, rs );
 178
 179 #ifdef LDAP_X_TXN
 180         if( rs->sr_err == LDAP_X_TXN_SPECIFY_OKAY ) {
 181                 /* skip cleanup */
 182                 return rs->sr_err;
 183         }
 184 #endif
 185
 186 cleanup:
 187         op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx );
 188         op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
 189         if ( op->orm_modlist != NULL ) slap_mods_free( op->orm_modlist, 1 );
 190
 191         return rs->sr_err;
 192 }
 193
 194 int
 195 fe_op_modify( Operation *op, SlapReply *rs )
 196 {
 197         BackendDB       *op_be, *bd = op->o_bd;
 198         char            textbuf[ SLAP_TEXT_BUFLEN ];
 199         size_t          textlen = sizeof( textbuf );
 200
 201         if ( BER_BVISEMPTY( &op->o_req_ndn ) ) {
 202                 Debug( LDAP_DEBUG_ANY, "%s do_modify: root dse!\n",
 203                         op->o_log_prefix, 0, 0 );
 204                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 205                         "modify upon the root DSE not supported" );
 206                 goto cleanup;
 207
 208         } else if ( bvmatch( &op->o_req_ndn, &frontendDB->be_schemandn ) ) {
 209                 Debug( LDAP_DEBUG_ANY, "%s do_modify: subschema subentry!\n",
 210                         op->o_log_prefix, 0, 0 );
 211                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 212                         "modification of subschema subentry not supported" );
 213                 goto cleanup;
 214         }
 215
 216         /*
 217          * We could be serving multiple database backends.  Select the
 218          * appropriate one, or send a referral to our "referral server"
 219          * if we don't hold it.
 220          */
 221         op->o_bd = select_backend( &op->o_req_ndn, 1 );
 222         if ( op->o_bd == NULL ) {
 223                 op->o_bd = bd;
 224                 rs->sr_ref = referral_rewrite( default_referral,
 225                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 226                 if ( !rs->sr_ref ) {
 227                         rs->sr_ref = default_referral;
 228                 }
 229
 230                 if ( rs->sr_ref != NULL ) {
 231                         rs->sr_err = LDAP_REFERRAL;
 232                         send_ldap_result( op, rs );
 233
 234                         if ( rs->sr_ref != default_referral ) {
 235                                 ber_bvarray_free( rs->sr_ref );
 236                         }
 237
 238                 } else {
 239                         send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 240                                 "no global superior knowledge" );
 241                 }
 242                 goto cleanup;
 243         }
 244
 245         /* If we've got a glued backend, check the real backend */
 246         op_be = op->o_bd;
 247         if ( SLAP_GLUE_INSTANCE( op->o_bd )) {
 248                 op->o_bd = select_backend( &op->o_req_ndn, 0 );
 249         }
 250
 251         /* check restrictions */
 252         if ( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
 253                 send_ldap_result( op, rs );
 254                 goto cleanup;
 255         }
 256
 257         /* check for referrals */
 258         if ( backend_check_referrals( op, rs ) != LDAP_SUCCESS ) {
 259                 goto cleanup;
 260         }
 261
 262         rs->sr_err = slap_mods_obsolete_check( op, op->orm_modlist,
 263                 &rs->sr_text, textbuf, textlen );
 264         if ( rs->sr_err != LDAP_SUCCESS ) {
 265                 send_ldap_result( op, rs );
 266                 goto cleanup;
 267         }
 268
 269         /* check for modify/increment support */
 270         if ( op->orm_increment && !SLAP_INCREMENT( op->o_bd ) ) {
 271                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 272                         "modify/increment not supported in context" );
 273                 goto cleanup;
 274         }
 275
 276         /*
 277          * do the modify if 1 && (2 || 3)
 278          * 1) there is a modify function implemented in this backend;
 279          * 2) this backend is master for what it holds;
 280          * 3) it's a replica and the dn supplied is the update_ndn.
 281          */
 282         if ( op->o_bd->be_modify ) {
 283                 /* do the update here */
 284                 int repl_user = be_isupdate( op );
 285
 286                 /*
 287                  * Multimaster slapd does not have to check for replicator dn
 288                  * because it accepts each modify request
 289                  */
 290                 if ( !SLAP_SINGLE_SHADOW(op->o_bd) || repl_user ) {
 291                         int update = !BER_BVISEMPTY( &op->o_bd->be_update_ndn );
 292
 293                         op->o_bd = op_be;
 294
 295                         if ( !update ) {
 296                                 rs->sr_err = slap_mods_no_user_mod_check( op, op->orm_modlist,
 297                                         &rs->sr_text, textbuf, textlen );
 298                                 if ( rs->sr_err != LDAP_SUCCESS ) {
 299                                         send_ldap_result( op, rs );
 300                                         goto cleanup;
 301                                 }
 302                         }
 303                         op->o_bd->be_modify( op, rs );
 304
 305                 } else { /* send a referral */
 306                         BerVarray defref = op->o_bd->be_update_refs
 307                                 ? op->o_bd->be_update_refs : default_referral;
 308                         if ( defref != NULL ) {
 309                                 rs->sr_ref = referral_rewrite( defref,
 310                                         NULL, &op->o_req_dn,
 311                                         LDAP_SCOPE_DEFAULT );
 312                                 if ( rs->sr_ref == NULL ) {
 313                                         /* FIXME: must duplicate, because
 314                                          * overlays may muck with it */
 315                                         rs->sr_ref = defref;
 316                                 }
 317                                 rs->sr_err = LDAP_REFERRAL;
 318                                 send_ldap_result( op, rs );
 319                                 if ( rs->sr_ref != defref ) {
 320                                         ber_bvarray_free( rs->sr_ref );
 321                                 }
 322
 323                         } else {
 324                                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 325                                         "shadow context; no update referral" );
 326                         }
 327                 }
 328
 329         } else {
 330                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 331                     "operation not supported within namingContext" );
 332         }
 333
 334 cleanup:;
 335         op->o_bd = bd;
 336         return rs->sr_err;
 337 }
 338
 339 /*
 340  * Obsolete constraint checking.
 341  */
 342 int
 343 slap_mods_obsolete_check(
 344         Operation *op,
 345         Modifications *ml,
 346         const char **text,
 347         char *textbuf,
 348         size_t textlen )
 349 {
 350         if( get_relax( op ) ) return LDAP_SUCCESS;
 351
 352         for ( ; ml != NULL; ml = ml->sml_next ) {
 353                 if ( is_at_obsolete( ml->sml_desc->ad_type ) &&
 354                         (( ml->sml_op != LDAP_MOD_REPLACE &&
 355                                 ml->sml_op != LDAP_MOD_DELETE ) ||
 356                                         ml->sml_values != NULL ))
 357                 {
 358                         /*
 359                          * attribute is obsolete,
 360                          * only allow replace/delete with no values
 361                          */
 362                         snprintf( textbuf, textlen,
 363                                 "%s: attribute is obsolete",
 364                                 ml->sml_type.bv_val );
 365                         *text = textbuf;
 366                         return LDAP_CONSTRAINT_VIOLATION;
 367                 }
 368         }
 369
 370         return LDAP_SUCCESS;
 371 }
 372
 373 /*
 374  * No-user-modification constraint checking.
 375  */
 376 int
 377 slap_mods_no_user_mod_check(
 378         Operation *op,
 379         Modifications *ml,
 380         const char **text,
 381         char *textbuf,
 382         size_t textlen )
 383 {
 384         for ( ; ml != NULL; ml = ml->sml_next ) {
 385                 if ( !is_at_no_user_mod( ml->sml_desc->ad_type ) ) {
 386                         continue;
 387                 }
 388
 389                 if ( ml->sml_flags & SLAP_MOD_INTERNAL ) {
 390                         continue;
 391                 }
 392
 393                 if ( get_relax( op ) ) {
 394                         if ( ml->sml_desc->ad_type->sat_flags & SLAP_AT_MANAGEABLE ) {
 395                                 ml->sml_flags |= SLAP_MOD_MANAGING;
 396                                 continue;
 397                         }
 398
 399                         /* attribute not manageable */
 400                         snprintf( textbuf, textlen,
 401                                 "%s: no-user-modification attribute not manageable",
 402                                 ml->sml_type.bv_val );
 403
 404                 } else {
 405                         /* user modification disallowed */
 406                         snprintf( textbuf, textlen,
 407                                 "%s: no user modification allowed",
 408                                 ml->sml_type.bv_val );
 409                 }
 410
 411                 *text = textbuf;
 412                 return LDAP_CONSTRAINT_VIOLATION;
 413         }
 414
 415         return LDAP_SUCCESS;
 416 }
 417
 418 int
 419 slap_mods_no_repl_user_mod_check(
 420         Operation *op,
 421         Modifications *ml,
 422         const char **text,
 423         char *textbuf,
 424         size_t textlen )
 425 {
 426         Modifications *mods;
 427         Modifications *modp;
 428
 429         for ( mods = ml; mods != NULL; mods = mods->sml_next ) {
 430                 assert( mods->sml_op == LDAP_MOD_ADD );
 431
 432                 /* check doesn't already appear */
 433                 for ( modp = ml; modp != NULL; modp = modp->sml_next ) {
 434                         if ( mods->sml_desc == modp->sml_desc && mods != modp ) {
 435                                 snprintf( textbuf, textlen,
 436                                         "attribute '%s' provided more than once",
 437                                         mods->sml_desc->ad_cname.bv_val );
 438                                 *text = textbuf;
 439                                 return LDAP_TYPE_OR_VALUE_EXISTS;
 440                         }
 441                 }
 442         }
 443
 444         return LDAP_SUCCESS;
 445 }
 446
 447 /*
 448  * Do basic attribute type checking and syntax validation.
 449  */
 450 int slap_mods_check(
 451         Operation *op,
 452         Modifications *ml,
 453         const char **text,
 454         char *textbuf,
 455         size_t textlen,
 456         void *ctx )
 457 {
 458         int rc;
 459
 460         for( ; ml != NULL; ml = ml->sml_next ) {
 461                 AttributeDescription *ad = NULL;
 462
 463                 /* convert to attribute description */
 464                 if ( ml->sml_desc == NULL ) {
 465                         rc = slap_bv2ad( &ml->sml_type, &ml->sml_desc, text );
 466                         if( rc != LDAP_SUCCESS ) {
 467                                 if ( get_no_schema_check( op )) {
 468                                         rc = slap_bv2undef_ad( &ml->sml_type, &ml->sml_desc,
 469                                                 text, 0 );
 470                                 }
 471                         }
 472                         if( rc != LDAP_SUCCESS ) {
 473                                 snprintf( textbuf, textlen, "%s: %s",
 474                                         ml->sml_type.bv_val, *text );
 475                                 *text = textbuf;
 476                                 return rc;
 477                         }
 478                 }
 479
 480                 ad = ml->sml_desc;
 481
 482                 if( slap_syntax_is_binary( ad->ad_type->sat_syntax )
 483                         && !slap_ad_is_binary( ad ))
 484                 {
 485                         /* attribute requires binary transfer */
 486                         snprintf( textbuf, textlen,
 487                                 "%s: requires ;binary transfer",
 488                                 ml->sml_type.bv_val );
 489                         *text = textbuf;
 490                         return LDAP_UNDEFINED_TYPE;
 491                 }
 492
 493                 if( !slap_syntax_is_binary( ad->ad_type->sat_syntax )
 494                         && slap_ad_is_binary( ad ))
 495                 {
 496                         /* attribute does not require binary transfer */
 497                         snprintf( textbuf, textlen,
 498                                 "%s: disallows ;binary transfer",
 499                                 ml->sml_type.bv_val );
 500                         *text = textbuf;
 501                         return LDAP_UNDEFINED_TYPE;
 502                 }
 503
 504                 if( slap_ad_is_tag_range( ad )) {
 505                         /* attribute requires binary transfer */
 506                         snprintf( textbuf, textlen,
 507                                 "%s: inappropriate use of tag range option",
 508                                 ml->sml_type.bv_val );
 509                         *text = textbuf;
 510                         return LDAP_UNDEFINED_TYPE;
 511                 }
 512
 513 #if 0
 514                 if ( is_at_obsolete( ad->ad_type ) &&
 515                         (( ml->sml_op != LDAP_MOD_REPLACE &&
 516                                 ml->sml_op != LDAP_MOD_DELETE ) ||
 517                                         ml->sml_values != NULL ))
 518                 {
 519                         /*
 520                          * attribute is obsolete,
 521                          * only allow replace/delete with no values
 522                          */
 523                         snprintf( textbuf, textlen,
 524                                 "%s: attribute is obsolete",
 525                                 ml->sml_type.bv_val );
 526                         *text = textbuf;
 527                         return LDAP_CONSTRAINT_VIOLATION;
 528                 }
 529 #endif
 530
 531                 if ( ml->sml_op == LDAP_MOD_INCREMENT &&
 532 #ifdef SLAPD_REAL_SYNTAX
 533                         !is_at_syntax( ad->ad_type, SLAPD_REAL_SYNTAX ) &&
 534 #endif
 535                         !is_at_syntax( ad->ad_type, SLAPD_INTEGER_SYNTAX ) )
 536                 {
 537                         /*
 538                          * attribute values must be INTEGER or REAL
 539                          */
 540                         snprintf( textbuf, textlen,
 541                                 "%s: attribute syntax inappropriate for increment",
 542                                 ml->sml_type.bv_val );
 543                         *text = textbuf;
 544                         return LDAP_CONSTRAINT_VIOLATION;
 545                 }
 546
 547                 /*
 548                  * check values
 549                  */
 550                 if( ml->sml_values != NULL ) {
 551                         ber_len_t nvals;
 552                         slap_syntax_validate_func *validate =
 553                                 ad->ad_type->sat_syntax->ssyn_validate;
 554                         slap_syntax_transform_func *pretty =
 555                                 ad->ad_type->sat_syntax->ssyn_pretty;
 556
 557                         if( !pretty && !validate ) {
 558                                 *text = "no validator for syntax";
 559                                 snprintf( textbuf, textlen,
 560                                         "%s: no validator for syntax %s",
 561                                         ml->sml_type.bv_val,
 562                                         ad->ad_type->sat_syntax->ssyn_oid );
 563                                 *text = textbuf;
 564                                 return LDAP_INVALID_SYNTAX;
 565                         }
 566
 567                         /*
 568                          * check that each value is valid per syntax
 569                          *      and pretty if appropriate
 570                          */
 571                         for ( nvals = 0; !BER_BVISNULL( &ml->sml_values[nvals] ); nvals++ ) {
 572                                 struct berval pval;
 573
 574                                 if ( pretty ) {
 575                                         rc = ordered_value_pretty( ad,
 576                                                 &ml->sml_values[nvals], &pval, ctx );
 577                                 } else {
 578                                         rc = ordered_value_validate( ad,
 579                                                 &ml->sml_values[nvals], ml->sml_op );
 580                                 }
 581
 582                                 if( rc != 0 ) {
 583                                         snprintf( textbuf, textlen,
 584                                                 "%s: value #%ld invalid per syntax",
 585                                                 ml->sml_type.bv_val, (long) nvals );
 586                                         *text = textbuf;
 587                                         return LDAP_INVALID_SYNTAX;
 588                                 }
 589
 590                                 if( pretty ) {
 591                                         ber_memfree_x( ml->sml_values[nvals].bv_val, ctx );
 592                                         ml->sml_values[nvals] = pval;
 593                                 }
 594                         }
 595                         ml->sml_values[nvals].bv_len = 0;
 596                         ml->sml_numvals = nvals;
 597
 598                         /*
 599                          * a rough single value check... an additional check is needed
 600                          * to catch add of single value to existing single valued attribute
 601                          */
 602                         if ((ml->sml_op == LDAP_MOD_ADD || ml->sml_op == LDAP_MOD_REPLACE)
 603                                 && nvals > 1 && is_at_single_value( ad->ad_type ))
 604                         {
 605                                 snprintf( textbuf, textlen,
 606                                         "%s: multiple values provided",
 607                                         ml->sml_type.bv_val );
 608                                 *text = textbuf;
 609                                 return LDAP_CONSTRAINT_VIOLATION;
 610                         }
 611
 612                         /* if the type has a normalizer, generate the
 613                          * normalized values. otherwise leave them NULL.
 614                          *
 615                          * this is different from the rule for attributes
 616                          * in an entry - in an attribute list, the normalized
 617                          * value is set equal to the non-normalized value
 618                          * when there is no normalizer.
 619                          */
 620                         if( nvals && ad->ad_type->sat_equality &&
 621                                 ad->ad_type->sat_equality->smr_normalize )
 622                         {
 623                                 ml->sml_nvalues = ber_memalloc_x(
 624                                         (nvals+1)*sizeof(struct berval), ctx );
 625
 626                                 for ( nvals = 0; !BER_BVISNULL( &ml->sml_values[nvals] ); nvals++ ) {
 627                                         rc = ordered_value_normalize(
 628                                                 SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
 629                                                 ad,
 630                                                 ad->ad_type->sat_equality,
 631                                                 &ml->sml_values[nvals], &ml->sml_nvalues[nvals], ctx );
 632                                         if ( rc ) {
 633                                                 Debug( LDAP_DEBUG_ANY,
 634                                                         "<= str2entry NULL (ssyn_normalize %d)\n",
 635                                                         rc, 0, 0 );
 636                                                 snprintf( textbuf, textlen,
 637                                                         "%s: value #%ld normalization failed",
 638                                                         ml->sml_type.bv_val, (long) nvals );
 639                                                 *text = textbuf;
 640                                                 BER_BVZERO( &ml->sml_nvalues[nvals] );
 641                                                 return rc;
 642                                         }
 643                                 }
 644
 645                                 BER_BVZERO( &ml->sml_nvalues[nvals] );
 646                         }
 647
 648                         /* check for duplicates, but ignore Deletes.
 649                          */
 650                         if( nvals > 1 && ml->sml_op != LDAP_MOD_DELETE ) {
 651                                 int i;
 652                                 rc = slap_sort_vals( ml, text, &i, ctx );
 653                                 if ( rc == LDAP_TYPE_OR_VALUE_EXISTS ) {
 654                                         /* value exists already */
 655                                         snprintf( textbuf, textlen,
 656                                                 "%s: value #%d provided more than once",
 657                                                 ml->sml_desc->ad_cname.bv_val, i );
 658                                         *text = textbuf;
 659                                 }
 660                                 if ( rc )
 661                                         return rc;
 662                         }
 663                 } else {
 664                         ml->sml_numvals = 0;
 665                 }
 666         }
 667
 668         return LDAP_SUCCESS;
 669 }
 670
 671 /* Sort a set of values. An (Attribute *) may be used interchangeably here
 672  * instead of a (Modifications *) structure.
 673  *
 674  * Uses Quicksort + Insertion sort for small arrays
 675  */
 676
 677 int
 678 slap_sort_vals(
 679         Modifications *ml,
 680         const char **text,
 681         int *dup,
 682         void *ctx )
 683 {
 684         AttributeDescription *ad;
 685         MatchingRule *mr;
 686         int istack[sizeof(int)*16];
 687         int i, j, k, l, ir, jstack, match, *ix, itmp, nvals, rc = LDAP_SUCCESS;
 688         int is_norm;
 689         struct berval a, *cv;
 690
 691 #define SMALL   8
 692 #define SWAP(a,b,tmp)   tmp=(a);(a)=(b);(b)=tmp
 693 #define COMP(a,b)       match=0; rc = ordered_value_match( &match, \
 694                                                 ad, mr, SLAP_MR_EQUALITY \
 695                                                                 | SLAP_MR_VALUE_OF_ASSERTION_SYNTAX \
 696                                                                 | SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH \
 697                                                                 | SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH, \
 698                                                                 &(a), &(b), text );
 699
 700 #define IX(x)   ix[x]
 701 #define EXCH(x,y)       SWAP(ix[x],ix[y],itmp)
 702 #define SETA(x) itmp = ix[x]; a = cv[itmp]
 703 #define GETA(x) ix[x] = itmp;
 704 #define SET(x,y)        ix[x] = ix[y]
 705
 706         ad = ml->sml_desc;
 707         nvals = ml->sml_numvals;
 708         if ( nvals <= 1 )
 709                 goto ret;
 710
 711         /* For Modifications, sml_nvalues is NULL if normalization wasn't needed.
 712          * For Attributes, sml_nvalues == sml_values when normalization isn't needed.
 713          */
 714         if ( ml->sml_nvalues && ml->sml_nvalues != ml->sml_values ) {
 715                 cv = ml->sml_nvalues;
 716                 is_norm = 1;
 717         } else {
 718                 cv = ml->sml_values;
 719                 is_norm = 0;
 720         }
 721
 722         if ( ad == slap_schema.si_ad_objectClass )
 723                 mr = NULL;      /* shortcut matching */
 724         else
 725                 mr = ad->ad_type->sat_equality;
 726
 727         /* record indices to preserve input ordering */
 728         ix = slap_sl_malloc( nvals * sizeof(int), ctx );
 729         for (i=0; i<nvals; i++) ix[i] = i;
 730
 731         ir = nvals-1;
 732         l = 0;
 733         jstack = 0;
 734
 735         for(;;) {
 736                 if (ir - l < SMALL) {   /* Insertion sort */
 737                         match=1;
 738                         for (j=l+1;j<=ir;j++) {
 739                                 SETA(j);
 740                                 for (i=j-1;i>=0;i--) {
 741                                         COMP(cv[IX(i)], a);
 742                                         if ( match <= 0 )
 743                                                 break;
 744                                         SET(i+1,i);
 745                                 }
 746                                 GETA(i+1);
 747                                 if ( match == 0 ) goto done;
 748                         }
 749                         if ( jstack == 0 ) break;
 750                         if ( match == 0 ) break;
 751                         ir = istack[jstack--];
 752                         l = istack[jstack--];
 753                 } else {
 754                         k = (l + ir) >> 1;      /* Choose median of left, center, right */
 755                         EXCH(k, l+1);
 756                         COMP( cv[IX(l)], cv[IX(ir)] );
 757                         if ( match > 0 ) {
 758                                 EXCH(l, ir);
 759                         } else if ( match == 0 ) {
 760                                 i = ir;
 761                                 break;
 762                         }
 763                         COMP( cv[IX(l+1)], cv[IX(ir)] );
 764                         if ( match > 0 ) {
 765                                 EXCH(l+1, ir);
 766                         } else if ( match == 0 ) {
 767                                 i = ir;
 768                                 break;
 769                         }
 770                         COMP( cv[IX(l)], cv[IX(l+1)] );
 771                         if ( match > 0 ) {
 772                                 EXCH(l, l+1);
 773                         } else if ( match == 0 ) {
 774                                 i = l;
 775                                 break;
 776                         }
 777                         i = l+1;
 778                         j = ir;
 779                         a = cv[IX(i)];
 780                         for(;;) {
 781                                 do {
 782                                         i++;
 783                                         COMP( cv[IX(i)], a );
 784                                 } while( match < 0 );
 785                                 while( match > 0 ) {
 786                                         j--;
 787                                         COMP( cv[IX(j)], a );
 788                                 }
 789                                 if (j < i) {
 790                                         match = 1;
 791                                         break;
 792                                 }
 793                                 if ( match == 0 ) {
 794                                         i = l+1;
 795                                         break;
 796                                 }
 797                                 EXCH(i,j);
 798                         }
 799                         if ( match == 0 )
 800                                 break;
 801                         EXCH(l+1,j);
 802                         jstack += 2;
 803                         if (ir-i+1 > j-l) {
 804                                 istack[jstack] = ir;
 805                                 istack[jstack-1] = i;
 806                                 ir = j;
 807                         } else {
 808                                 istack[jstack] = j;
 809                                 istack[jstack-1] = l;
 810                                 l = i;
 811                         }
 812                 }
 813         }
 814         done:
 815         if ( match == 0 && i >= 0 )
 816                 *dup = ix[i];
 817
 818         /* For sorted attributes, put the values in index order */
 819         if ( rc == LDAP_SUCCESS && match &&
 820                 ( ad->ad_type->sat_flags & SLAP_AT_SORTED_VAL )) {
 821                 BerVarray tmpv = slap_sl_malloc( sizeof( struct berval ) * nvals, ctx );
 822                 for ( i = 0; i<nvals; i++ )
 823                         tmpv[i] = cv[ix[i]];
 824                 for ( i = 0; i<nvals; i++ )
 825                         cv[i] = tmpv[i];
 826                 /* Check if the non-normalized array needs to move too */
 827                 if ( is_norm ) {
 828                         cv = ml->sml_values;
 829                         for ( i = 0; i<nvals; i++ )
 830                                 tmpv[i] = cv[ix[i]];
 831                         for ( i = 0; i<nvals; i++ )
 832                                 cv[i] = tmpv[i];
 833                 }
 834                 slap_sl_free( tmpv, ctx );
 835         }
 836
 837         slap_sl_free( ix, ctx );
 838
 839         if ( rc == LDAP_SUCCESS && match == 0 ) {
 840                 /* value exists already */
 841                 assert( i >= 0 );
 842                 assert( i < nvals );
 843                 rc = LDAP_TYPE_OR_VALUE_EXISTS;
 844         }
 845  ret:
 846         return rc;
 847 }
 848
 849 /* Enter with bv->bv_len = sizeof buffer, returns with
 850  * actual length of string
 851  */
 852 void slap_timestamp( time_t *tm, struct berval *bv )
 853 {
 854         struct tm ltm;
 855
 856         ldap_pvt_gmtime( tm, &ltm );
 857
 858         bv->bv_len = lutil_gentime( bv->bv_val, bv->bv_len, &ltm );
 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_PVT_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 != SLAP_MOD_SOFTADD &&
 882                                 (*modtail)->sml_op != SLAP_MOD_ADD_IF_NOT_PRESENT &&
 883                                 (*modtail)->sml_op != LDAP_MOD_REPLACE )
 884                         {
 885                                 continue;
 886                         }
 887
 888                         if ( (*modtail)->sml_desc == slap_schema.si_ad_entryCSN )
 889                         {
 890                                 csn = (*modtail)->sml_values[0];
 891                                 gotcsn = 1;
 892
 893                         } else if ( (*modtail)->sml_desc == slap_schema.si_ad_modifiersName )
 894                         {
 895                                 gotmname = 1;
 896
 897                         } else if ( (*modtail)->sml_desc == slap_schema.si_ad_modifyTimestamp )
 898                         {
 899                                 gotmtime = 1;
 900                         }
 901                 }
 902
 903                 if ( BER_BVISEMPTY( &op->o_csn )) {
 904                         if ( !gotcsn ) {
 905                                 csn.bv_val = csnbuf;
 906                                 csn.bv_len = sizeof( csnbuf );
 907                                 slap_get_csn( op, &csn, manage_ctxcsn );
 908
 909                         } else {
 910                                 if ( manage_ctxcsn ) {
 911                                         slap_queue_csn( op, &csn );
 912                                 }
 913                         }
 914
 915                 } else {
 916                         csn = op->o_csn;
 917                 }
 918
 919                 ptr = ber_bvchr( &csn, '#' );
 920                 if ( ptr ) {
 921                         timestamp.bv_len = STRLENOF("YYYYMMDDHHMMSSZ");
 922                         AC_MEMCPY( timebuf, csn.bv_val, timestamp.bv_len );
 923                         timebuf[timestamp.bv_len-1] = 'Z';
 924                         timebuf[timestamp.bv_len] = '\0';
 925
 926                 } else {
 927                         time_t now = slap_get_time();
 928
 929                         timestamp.bv_len = sizeof(timebuf);
 930
 931                         slap_timestamp( &now, &timestamp );
 932                 }
 933
 934                 if ( BER_BVISEMPTY( &op->o_dn ) ) {
 935                         BER_BVSTR( &name, SLAPD_ANONYMOUS );
 936                         nname = name;
 937
 938                 } else {
 939                         name = op->o_dn;
 940                         nname = op->o_ndn;
 941                 }
 942
 943                 if ( !gotcsn ) {
 944                         mod = (Modifications *) ch_malloc( sizeof( Modifications ) );
 945                         mod->sml_op = LDAP_MOD_REPLACE;
 946                         mod->sml_flags = SLAP_MOD_INTERNAL;
 947                         mod->sml_next = NULL;
 948                         BER_BVZERO( &mod->sml_type );
 949                         mod->sml_desc = slap_schema.si_ad_entryCSN;
 950                         mod->sml_numvals = 1;
 951                         mod->sml_values = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
 952                         ber_dupbv( &mod->sml_values[0], &csn );
 953                         BER_BVZERO( &mod->sml_values[1] );
 954                         assert( !BER_BVISNULL( &mod->sml_values[0] ) );
 955                         mod->sml_nvalues = NULL;
 956                         *modtail = mod;
 957                         modlast = mod;
 958                         modtail = &mod->sml_next;
 959                 }
 960
 961                 if ( !gotmname ) {
 962                         mod = (Modifications *) ch_malloc( sizeof( Modifications ) );
 963                         mod->sml_op = LDAP_MOD_REPLACE;
 964                         mod->sml_flags = SLAP_MOD_INTERNAL;
 965                         mod->sml_next = NULL;
 966                         BER_BVZERO( &mod->sml_type );
 967                         mod->sml_desc = slap_schema.si_ad_modifiersName;
 968                         mod->sml_numvals = 1;
 969                         mod->sml_values = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
 970                         ber_dupbv( &mod->sml_values[0], &name );
 971                         BER_BVZERO( &mod->sml_values[1] );
 972                         assert( !BER_BVISNULL( &mod->sml_values[0] ) );
 973                         mod->sml_nvalues =
 974                                 (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
 975                         ber_dupbv( &mod->sml_nvalues[0], &nname );
 976                         BER_BVZERO( &mod->sml_nvalues[1] );
 977                         assert( !BER_BVISNULL( &mod->sml_nvalues[0] ) );
 978                         *modtail = mod;
 979                         modtail = &mod->sml_next;
 980                 }
 981
 982                 if ( !gotmtime ) {
 983                         mod = (Modifications *) ch_malloc( sizeof( Modifications ) );
 984                         mod->sml_op = LDAP_MOD_REPLACE;
 985                         mod->sml_flags = SLAP_MOD_INTERNAL;
 986                         mod->sml_next = NULL;
 987                         BER_BVZERO( &mod->sml_type );
 988                         mod->sml_desc = slap_schema.si_ad_modifyTimestamp;
 989                         mod->sml_numvals = 1;
 990                         mod->sml_values = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
 991                         ber_dupbv( &mod->sml_values[0], &timestamp );
 992                         BER_BVZERO( &mod->sml_values[1] );
 993                         assert( !BER_BVISNULL( &mod->sml_values[0] ) );
 994                         mod->sml_nvalues = NULL;
 995                         *modtail = mod;
 996                         modtail = &mod->sml_next;
 997                 }
 998         }
 999 }
1000
1001 int
1002 slap_parse_modlist(
1003         Operation *op,
1004         SlapReply *rs,
1005         BerElement *ber,
1006         req_modify_s *ms )
1007 {
1008         ber_tag_t       tag;
1009         ber_len_t       len;
1010         char            *last;
1011         Modifications   **modtail = &ms->rs_mods.rs_modlist;
1012
1013         ms->rs_mods.rs_modlist = NULL;
1014         ms->rs_increment = 0;
1015
1016         rs->sr_err = LDAP_SUCCESS;
1017
1018         /* collect modifications & save for later */
1019         for ( tag = ber_first_element( ber, &len, &last );
1020                 tag != LBER_DEFAULT;
1021                 tag = ber_next_element( ber, &len, last ) )
1022         {
1023                 ber_int_t mop;
1024                 Modifications tmp, *mod;
1025
1026                 tmp.sml_nvalues = NULL;
1027
1028                 if ( ber_scanf( ber, "{e{m[W]}}", &mop,
1029                     &tmp.sml_type, &tmp.sml_values ) == LBER_ERROR )
1030                 {
1031                         rs->sr_text = "decoding modlist error";
1032                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1033                         goto done;
1034                 }
1035
1036                 mod = (Modifications *) ch_malloc( sizeof(Modifications) );
1037                 mod->sml_op = mop;
1038                 mod->sml_flags = 0;
1039                 mod->sml_type = tmp.sml_type;
1040                 mod->sml_values = tmp.sml_values;
1041                 mod->sml_nvalues = NULL;
1042                 mod->sml_desc = NULL;
1043                 mod->sml_next = NULL;
1044                 *modtail = mod;
1045
1046                 switch( mop ) {
1047                 case LDAP_MOD_ADD:
1048                         if ( mod->sml_values == NULL ) {
1049                                 rs->sr_text = "modify/add operation requires values";
1050                                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1051                                 goto done;
1052                         }
1053
1054                         /* fall through */
1055
1056                 case LDAP_MOD_DELETE:
1057                 case LDAP_MOD_REPLACE:
1058                         break;
1059
1060                 case LDAP_MOD_INCREMENT:
1061                         if( op->o_protocol >= LDAP_VERSION3 ) {
1062                                 ms->rs_increment++;
1063                                 if ( mod->sml_values == NULL ) {
1064                                         rs->sr_text = "modify/increment operation requires value";
1065                                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1066                                         goto done;
1067                                 }
1068
1069                                 if ( !BER_BVISNULL( &mod->sml_values[ 1 ] ) ) {
1070                                         rs->sr_text = "modify/increment operation requires single value";
1071                                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1072                                         goto done;
1073                                 }
1074
1075                                 break;
1076                         }
1077                         /* fall thru */
1078
1079                 default:
1080                         rs->sr_text = "unrecognized modify operation";
1081                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1082                         goto done;
1083                 }
1084
1085                 modtail = &mod->sml_next;
1086         }
1087         *modtail = NULL;
1088
1089 done:
1090         if ( rs->sr_err != LDAP_SUCCESS ) {
1091                 slap_mods_free( ms->rs_mods.rs_modlist, 1 );
1092                 ms->rs_mods.rs_modlist = NULL;
1093                 ms->rs_increment = 0;
1094         }
1095
1096         return rs->sr_err;
1097 }
1098