external/bsd/openldap/dist/servers/slapd/modify.c

   1 /* $OpenLDAP: pkg/ldap/servers/slapd/modify.c,v 1.276.2.9 2008/04/14 22:05:06 quanah Exp $ */
   2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   3  *
   4  * Copyright 1998-2008 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                 goto cleanup;
  86         }
  87
  88         if( get_ctrls( op, rs, 1 ) != LDAP_SUCCESS ) {
  89                 Debug( LDAP_DEBUG_ANY, "%s do_modify: get_ctrls failed\n",
  90                         op->o_log_prefix, 0, 0 );
  91                 goto cleanup;
  92         }
  93
  94         rs->sr_err = dnPrettyNormal( NULL, &dn, &op->o_req_dn, &op->o_req_ndn,
  95                 op->o_tmpmemctx );
  96         if( rs->sr_err != LDAP_SUCCESS ) {
  97                 Debug( LDAP_DEBUG_ANY, "%s do_modify: invalid dn (%s)\n",
  98                         op->o_log_prefix, dn.bv_val, 0 );
  99                 send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid DN" );
 100                 goto cleanup;
 101         }
 102
 103         op->orm_no_opattrs = 0;
 104
 105 #ifdef LDAP_DEBUG
 106         Debug( LDAP_DEBUG_ARGS, "%s modifications:\n",
 107                         op->o_log_prefix, 0, 0 );
 108
 109         for ( tmp = op->orm_modlist; tmp != NULL; tmp = tmp->sml_next ) {
 110                 Debug( LDAP_DEBUG_ARGS, "\t%s: %s\n",
 111                         tmp->sml_op == LDAP_MOD_ADD ? "add" :
 112                                 (tmp->sml_op == LDAP_MOD_INCREMENT ? "increment" :
 113                                 (tmp->sml_op == LDAP_MOD_DELETE ? "delete" :
 114                                         "replace")), tmp->sml_type.bv_val, 0 );
 115
 116                 if ( tmp->sml_values == NULL ) {
 117                         Debug( LDAP_DEBUG_ARGS, "%s\n",
 118                            "\t\tno values", NULL, NULL );
 119                 } else if ( BER_BVISNULL( &tmp->sml_values[ 0 ] ) ) {
 120                         Debug( LDAP_DEBUG_ARGS, "%s\n",
 121                            "\t\tzero values", NULL, NULL );
 122                 } else if ( BER_BVISNULL( &tmp->sml_values[ 1 ] ) ) {
 123                         Debug( LDAP_DEBUG_ARGS, "%s, length %ld\n",
 124                            "\t\tone value", (long) tmp->sml_values[0].bv_len, NULL );
 125                 } else {
 126                         Debug( LDAP_DEBUG_ARGS, "%s\n",
 127                            "\t\tmultiple values", NULL, NULL );
 128                 }
 129         }
 130
 131         if ( StatslogTest( LDAP_DEBUG_STATS ) ) {
 132                 char abuf[BUFSIZ/2], *ptr = abuf;
 133                 int len = 0;
 134
 135                 Statslog( LDAP_DEBUG_STATS, "%s MOD dn=\"%s\"\n",
 136                         op->o_log_prefix, op->o_req_dn.bv_val, 0, 0, 0 );
 137
 138                 for ( tmp = op->orm_modlist; tmp != NULL; tmp = tmp->sml_next ) {
 139                         if (len + 1 + tmp->sml_type.bv_len > sizeof(abuf)) {
 140                                 Statslog( LDAP_DEBUG_STATS, "%s MOD attr=%s\n",
 141                                     op->o_log_prefix, abuf, 0, 0, 0 );
 142
 143                                 len = 0;
 144                                 ptr = abuf;
 145
 146                                 if( 1 + tmp->sml_type.bv_len > sizeof(abuf)) {
 147                                         Statslog( LDAP_DEBUG_STATS, "%s MOD attr=%s\n",
 148                                                 op->o_log_prefix, tmp->sml_type.bv_val, 0, 0, 0 );
 149                                         continue;
 150                                 }
 151                         }
 152                         if (len) {
 153                                 *ptr++ = ' ';
 154                                 len++;
 155                         }
 156                         ptr = lutil_strcopy(ptr, tmp->sml_type.bv_val);
 157                         len += tmp->sml_type.bv_len;
 158                 }
 159                 if (len) {
 160                         Statslog( LDAP_DEBUG_STATS, "%s MOD attr=%s\n",
 161                                 op->o_log_prefix, abuf, 0, 0, 0 );
 162                 }
 163         }
 164 #endif  /* LDAP_DEBUG */
 165
 166         rs->sr_err = slap_mods_check( op, op->orm_modlist,
 167                 &rs->sr_text, textbuf, textlen, NULL );
 168
 169         if ( rs->sr_err != LDAP_SUCCESS ) {
 170                 send_ldap_result( op, rs );
 171                 goto cleanup;
 172         }
 173
 174         op->o_bd = frontendDB;
 175         rs->sr_err = frontendDB->be_modify( op, rs );
 176
 177 #ifdef LDAP_X_TXN
 178         if( rs->sr_err == LDAP_X_TXN_SPECIFY_OKAY ) {
 179                 /* skip cleanup */
 180                 return rs->sr_err;
 181         }
 182 #endif
 183
 184 cleanup:
 185         op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx );
 186         op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
 187         if ( op->orm_modlist != NULL ) slap_mods_free( op->orm_modlist, 1 );
 188
 189         return rs->sr_err;
 190 }
 191
 192 int
 193 fe_op_modify( Operation *op, SlapReply *rs )
 194 {
 195         BackendDB       *op_be, *bd = op->o_bd;
 196         char            textbuf[ SLAP_TEXT_BUFLEN ];
 197         size_t          textlen = sizeof( textbuf );
 198
 199         if ( BER_BVISEMPTY( &op->o_req_ndn ) ) {
 200                 Debug( LDAP_DEBUG_ANY, "%s do_modify: root dse!\n",
 201                         op->o_log_prefix, 0, 0 );
 202                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 203                         "modify upon the root DSE not supported" );
 204                 goto cleanup;
 205
 206         } else if ( bvmatch( &op->o_req_ndn, &frontendDB->be_schemandn ) ) {
 207                 Debug( LDAP_DEBUG_ANY, "%s do_modify: subschema subentry!\n",
 208                         op->o_log_prefix, 0, 0 );
 209                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 210                         "modification of subschema subentry not supported" );
 211                 goto cleanup;
 212         }
 213
 214         /*
 215          * We could be serving multiple database backends.  Select the
 216          * appropriate one, or send a referral to our "referral server"
 217          * if we don't hold it.
 218          */
 219         op->o_bd = select_backend( &op->o_req_ndn, 1 );
 220         if ( op->o_bd == NULL ) {
 221                 op->o_bd = bd;
 222                 rs->sr_ref = referral_rewrite( default_referral,
 223                         NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
 224                 if ( !rs->sr_ref ) {
 225                         rs->sr_ref = default_referral;
 226                 }
 227
 228                 if ( rs->sr_ref != NULL ) {
 229                         rs->sr_err = LDAP_REFERRAL;
 230                         send_ldap_result( op, rs );
 231
 232                         if ( rs->sr_ref != default_referral ) {
 233                                 ber_bvarray_free( rs->sr_ref );
 234                         }
 235
 236                 } else {
 237                         send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 238                                 "no global superior knowledge" );
 239                 }
 240                 goto cleanup;
 241         }
 242
 243         /* If we've got a glued backend, check the real backend */
 244         op_be = op->o_bd;
 245         if ( SLAP_GLUE_INSTANCE( op->o_bd )) {
 246                 op->o_bd = select_backend( &op->o_req_ndn, 0 );
 247         }
 248
 249         /* check restrictions */
 250         if ( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
 251                 send_ldap_result( op, rs );
 252                 goto cleanup;
 253         }
 254
 255         /* check for referrals */
 256         if ( backend_check_referrals( op, rs ) != LDAP_SUCCESS ) {
 257                 goto cleanup;
 258         }
 259
 260         rs->sr_err = slap_mods_obsolete_check( op, op->orm_modlist,
 261                 &rs->sr_text, textbuf, textlen );
 262         if ( rs->sr_err != LDAP_SUCCESS ) {
 263                 send_ldap_result( op, rs );
 264                 goto cleanup;
 265         }
 266
 267         /* check for modify/increment support */
 268         if ( op->orm_increment && !SLAP_INCREMENT( op->o_bd ) ) {
 269                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 270                         "modify/increment not supported in context" );
 271         }
 272
 273         /*
 274          * do the modify if 1 && (2 || 3)
 275          * 1) there is a modify function implemented in this backend;
 276          * 2) this backend is master for what it holds;
 277          * 3) it's a replica and the dn supplied is the update_ndn.
 278          */
 279         if ( op->o_bd->be_modify ) {
 280                 /* do the update here */
 281                 int repl_user = be_isupdate( op );
 282
 283                 /*
 284                  * Multimaster slapd does not have to check for replicator dn
 285                  * because it accepts each modify request
 286                  */
 287                 if ( !SLAP_SINGLE_SHADOW(op->o_bd) || repl_user ) {
 288                         int update = !BER_BVISEMPTY( &op->o_bd->be_update_ndn );
 289
 290                         op->o_bd = op_be;
 291
 292                         if ( !update ) {
 293                                 rs->sr_err = slap_mods_no_user_mod_check( op, op->orm_modlist,
 294                                         &rs->sr_text, textbuf, textlen );
 295                                 if ( rs->sr_err != LDAP_SUCCESS ) {
 296                                         send_ldap_result( op, rs );
 297                                         goto cleanup;
 298                                 }
 299                         }
 300                         op->o_bd->be_modify( op, rs );
 301
 302                 } else { /* send a referral */
 303                         BerVarray defref = op->o_bd->be_update_refs
 304                                 ? op->o_bd->be_update_refs : default_referral;
 305                         if ( defref != NULL ) {
 306                                 rs->sr_ref = referral_rewrite( defref,
 307                                         NULL, &op->o_req_dn,
 308                                         LDAP_SCOPE_DEFAULT );
 309                                 if ( rs->sr_ref == NULL ) {
 310                                         /* FIXME: must duplicate, because
 311                                          * overlays may muck with it */
 312                                         rs->sr_ref = defref;
 313                                 }
 314                                 rs->sr_err = LDAP_REFERRAL;
 315                                 send_ldap_result( op, rs );
 316                                 if ( rs->sr_ref != defref ) {
 317                                         ber_bvarray_free( rs->sr_ref );
 318                                 }
 319
 320                         } else {
 321                                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 322                                         "shadow context; no update referral" );
 323                         }
 324                 }
 325
 326         } else {
 327                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 328                     "operation not supported within namingContext" );
 329         }
 330
 331 cleanup:;
 332         op->o_bd = bd;
 333         return rs->sr_err;
 334 }
 335
 336 /*
 337  * Obsolete constraint checking.
 338  */
 339 int
 340 slap_mods_obsolete_check(
 341         Operation *op,
 342         Modifications *ml,
 343         const char **text,
 344         char *textbuf,
 345         size_t textlen )
 346 {
 347         if( get_relax( op ) ) return LDAP_SUCCESS;
 348
 349         for ( ; ml != NULL; ml = ml->sml_next ) {
 350                 if ( is_at_obsolete( ml->sml_desc->ad_type ) &&
 351                         (( ml->sml_op != LDAP_MOD_REPLACE &&
 352                                 ml->sml_op != LDAP_MOD_DELETE ) ||
 353                                         ml->sml_values != NULL ))
 354                 {
 355                         /*
 356                          * attribute is obsolete,
 357                          * only allow replace/delete with no values
 358                          */
 359                         snprintf( textbuf, textlen,
 360                                 "%s: attribute is obsolete",
 361                                 ml->sml_type.bv_val );
 362                         *text = textbuf;
 363                         return LDAP_CONSTRAINT_VIOLATION;
 364                 }
 365         }
 366
 367         return LDAP_SUCCESS;
 368 }
 369
 370 /*
 371  * No-user-modification constraint checking.
 372  */
 373 int
 374 slap_mods_no_user_mod_check(
 375         Operation *op,
 376         Modifications *ml,
 377         const char **text,
 378         char *textbuf,
 379         size_t textlen )
 380 {
 381         for ( ; ml != NULL; ml = ml->sml_next ) {
 382                 if ( !is_at_no_user_mod( ml->sml_desc->ad_type ) ) {
 383                         continue;
 384                 }
 385
 386                 if ( ml->sml_flags & SLAP_MOD_INTERNAL ) {
 387                         continue;
 388                 }
 389
 390                 if ( get_relax( op ) ) {
 391                         if ( ml->sml_desc->ad_type->sat_flags & SLAP_AT_MANAGEABLE ) {
 392                                 ml->sml_flags |= SLAP_MOD_MANAGING;
 393                                 continue;
 394                         }
 395
 396                         /* attribute not manageable */
 397                         snprintf( textbuf, textlen,
 398                                 "%s: no-user-modification attribute not manageable",
 399                                 ml->sml_type.bv_val );
 400
 401                 } else {
 402                         /* user modification disallowed */
 403                         snprintf( textbuf, textlen,
 404                                 "%s: no user modification allowed",
 405                                 ml->sml_type.bv_val );
 406                 }
 407
 408                 *text = textbuf;
 409                 return LDAP_CONSTRAINT_VIOLATION;
 410         }
 411
 412         return LDAP_SUCCESS;
 413 }
 414
 415 int
 416 slap_mods_no_repl_user_mod_check(
 417         Operation *op,
 418         Modifications *ml,
 419         const char **text,
 420         char *textbuf,
 421         size_t textlen )
 422 {
 423         Modifications *mods;
 424         Modifications *modp;
 425
 426         for ( mods = ml; mods != NULL; mods = mods->sml_next ) {
 427                 assert( mods->sml_op == LDAP_MOD_ADD );
 428
 429                 /* check doesn't already appear */
 430                 for ( modp = ml; modp != NULL; modp = modp->sml_next ) {
 431                         if ( mods->sml_desc == modp->sml_desc && mods != modp ) {
 432                                 snprintf( textbuf, textlen,
 433                                         "attribute '%s' provided more than once",
 434                                         mods->sml_desc->ad_cname.bv_val );
 435                                 *text = textbuf;
 436                                 return LDAP_TYPE_OR_VALUE_EXISTS;
 437                         }
 438                 }
 439         }
 440
 441         return LDAP_SUCCESS;
 442 }
 443
 444 /*
 445  * Do basic attribute type checking and syntax validation.
 446  */
 447 int slap_mods_check(
 448         Operation *op,
 449         Modifications *ml,
 450         const char **text,
 451         char *textbuf,
 452         size_t textlen,
 453         void *ctx )
 454 {
 455         int rc;
 456
 457         for( ; ml != NULL; ml = ml->sml_next ) {
 458                 AttributeDescription *ad = NULL;
 459
 460                 /* convert to attribute description */
 461                 if ( ml->sml_desc == NULL ) {
 462                         rc = slap_bv2ad( &ml->sml_type, &ml->sml_desc, text );
 463                         if( rc != LDAP_SUCCESS ) {
 464                                 if ( get_no_schema_check( op )) {
 465                                         rc = slap_bv2undef_ad( &ml->sml_type, &ml->sml_desc,
 466                                                 text, 0 );
 467                                 }
 468                         }
 469                         if( rc != LDAP_SUCCESS ) {
 470                                 snprintf( textbuf, textlen, "%s: %s",
 471                                         ml->sml_type.bv_val, *text );
 472                                 *text = textbuf;
 473                                 return rc;
 474                         }
 475                 }
 476
 477                 ad = ml->sml_desc;
 478
 479                 if( slap_syntax_is_binary( ad->ad_type->sat_syntax )
 480                         && !slap_ad_is_binary( ad ))
 481                 {
 482                         /* attribute requires binary transfer */
 483                         snprintf( textbuf, textlen,
 484                                 "%s: requires ;binary transfer",
 485                                 ml->sml_type.bv_val );
 486                         *text = textbuf;
 487                         return LDAP_UNDEFINED_TYPE;
 488                 }
 489
 490                 if( !slap_syntax_is_binary( ad->ad_type->sat_syntax )
 491                         && slap_ad_is_binary( ad ))
 492                 {
 493                         /* attribute does not require binary transfer */
 494                         snprintf( textbuf, textlen,
 495                                 "%s: disallows ;binary transfer",
 496                                 ml->sml_type.bv_val );
 497                         *text = textbuf;
 498                         return LDAP_UNDEFINED_TYPE;
 499                 }
 500
 501                 if( slap_ad_is_tag_range( ad )) {
 502                         /* attribute requires binary transfer */
 503                         snprintf( textbuf, textlen,
 504                                 "%s: inappropriate use of tag range option",
 505                                 ml->sml_type.bv_val );
 506                         *text = textbuf;
 507                         return LDAP_UNDEFINED_TYPE;
 508                 }
 509
 510 #if 0
 511                 if ( is_at_obsolete( ad->ad_type ) &&
 512                         (( ml->sml_op != LDAP_MOD_REPLACE &&
 513                                 ml->sml_op != LDAP_MOD_DELETE ) ||
 514                                         ml->sml_values != NULL ))
 515                 {
 516                         /*
 517                          * attribute is obsolete,
 518                          * only allow replace/delete with no values
 519                          */
 520                         snprintf( textbuf, textlen,
 521                                 "%s: attribute is obsolete",
 522                                 ml->sml_type.bv_val );
 523                         *text = textbuf;
 524                         return LDAP_CONSTRAINT_VIOLATION;
 525                 }
 526 #endif
 527
 528                 if ( ml->sml_op == LDAP_MOD_INCREMENT &&
 529 #ifdef SLAPD_REAL_SYNTAX
 530                         !is_at_syntax( ad->ad_type, SLAPD_REAL_SYNTAX ) &&
 531 #endif
 532                         !is_at_syntax( ad->ad_type, SLAPD_INTEGER_SYNTAX ) )
 533                 {
 534                         /*
 535                          * attribute values must be INTEGER or REAL
 536                          */
 537                         snprintf( textbuf, textlen,
 538                                 "%s: attribute syntax inappropriate for increment",
 539                                 ml->sml_type.bv_val );
 540                         *text = textbuf;
 541                         return LDAP_CONSTRAINT_VIOLATION;
 542                 }
 543
 544                 /*
 545                  * check values
 546                  */
 547                 if( ml->sml_values != NULL ) {
 548                         ber_len_t nvals;
 549                         slap_syntax_validate_func *validate =
 550                                 ad->ad_type->sat_syntax->ssyn_validate;
 551                         slap_syntax_transform_func *pretty =
 552                                 ad->ad_type->sat_syntax->ssyn_pretty;
 553
 554                         if( !pretty && !validate ) {
 555                                 *text = "no validator for syntax";
 556                                 snprintf( textbuf, textlen,
 557                                         "%s: no validator for syntax %s",
 558                                         ml->sml_type.bv_val,
 559                                         ad->ad_type->sat_syntax->ssyn_oid );
 560                                 *text = textbuf;
 561                                 return LDAP_INVALID_SYNTAX;
 562                         }
 563
 564                         /*
 565                          * check that each value is valid per syntax
 566                          *      and pretty if appropriate
 567                          */
 568                         for ( nvals = 0; !BER_BVISNULL( &ml->sml_values[nvals] ); nvals++ ) {
 569                                 struct berval pval;
 570
 571                                 if ( pretty ) {
 572                                         rc = ordered_value_pretty( ad,
 573                                                 &ml->sml_values[nvals], &pval, ctx );
 574                                 } else {
 575                                         rc = ordered_value_validate( ad,
 576                                                 &ml->sml_values[nvals], ml->sml_op );
 577                                 }
 578
 579                                 if( rc != 0 ) {
 580                                         snprintf( textbuf, textlen,
 581                                                 "%s: value #%ld invalid per syntax",
 582                                                 ml->sml_type.bv_val, (long) nvals );
 583                                         *text = textbuf;
 584                                         return LDAP_INVALID_SYNTAX;
 585                                 }
 586
 587                                 if( pretty ) {
 588                                         ber_memfree_x( ml->sml_values[nvals].bv_val, ctx );
 589                                         ml->sml_values[nvals] = pval;
 590                                 }
 591                         }
 592                         ml->sml_values[nvals].bv_len = 0;
 593                         ml->sml_numvals = nvals;
 594
 595                         /*
 596                          * a rough single value check... an additional check is needed
 597                          * to catch add of single value to existing single valued attribute
 598                          */
 599                         if ((ml->sml_op == LDAP_MOD_ADD || ml->sml_op == LDAP_MOD_REPLACE)
 600                                 && nvals > 1 && is_at_single_value( ad->ad_type ))
 601                         {
 602                                 snprintf( textbuf, textlen,
 603                                         "%s: multiple values provided",
 604                                         ml->sml_type.bv_val );
 605                                 *text = textbuf;
 606                                 return LDAP_CONSTRAINT_VIOLATION;
 607                         }
 608
 609                         /* if the type has a normalizer, generate the
 610                          * normalized values. otherwise leave them NULL.
 611                          *
 612                          * this is different from the rule for attributes
 613                          * in an entry - in an attribute list, the normalized
 614                          * value is set equal to the non-normalized value
 615                          * when there is no normalizer.
 616                          */
 617                         if( nvals && ad->ad_type->sat_equality &&
 618                                 ad->ad_type->sat_equality->smr_normalize )
 619                         {
 620                                 ml->sml_nvalues = ber_memalloc_x(
 621                                         (nvals+1)*sizeof(struct berval), ctx );
 622
 623                                 for ( nvals = 0; !BER_BVISNULL( &ml->sml_values[nvals] ); nvals++ ) {
 624                                         rc = ordered_value_normalize(
 625                                                 SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
 626                                                 ad,
 627                                                 ad->ad_type->sat_equality,
 628                                                 &ml->sml_values[nvals], &ml->sml_nvalues[nvals], ctx );
 629                                         if ( rc ) {
 630                                                 Debug( LDAP_DEBUG_ANY,
 631                                                         "<= str2entry NULL (ssyn_normalize %d)\n",
 632                                                         rc, 0, 0 );
 633                                                 snprintf( textbuf, textlen,
 634                                                         "%s: value #%ld normalization failed",
 635                                                         ml->sml_type.bv_val, (long) nvals );
 636                                                 *text = textbuf;
 637                                                 BER_BVZERO( &ml->sml_nvalues[nvals] );
 638                                                 return rc;
 639                                         }
 640                                 }
 641
 642                                 BER_BVZERO( &ml->sml_nvalues[nvals] );
 643                         }
 644
 645                         /* check for duplicates, but ignore Deletes.
 646                          */
 647                         if( nvals > 1 && ml->sml_op != LDAP_MOD_DELETE ) {
 648                                 int i;
 649                                 rc = slap_sort_vals( ml, text, &i, ctx );
 650                                 if ( rc == LDAP_TYPE_OR_VALUE_EXISTS ) {
 651                                         /* value exists already */
 652                                         snprintf( textbuf, textlen,
 653                                                 "%s: value #%d provided more than once",
 654                                                 ml->sml_desc->ad_cname.bv_val, i );
 655                                         *text = textbuf;
 656                                 }
 657                                 if ( rc )
 658                                         return rc;
 659                         }
 660                 } else {
 661                         ml->sml_numvals = 0;
 662                 }
 663         }
 664
 665         return LDAP_SUCCESS;
 666 }
 667
 668 /* Sort a set of values. An (Attribute *) may be used interchangeably here
 669  * instead of a (Modifications *) structure.
 670  *
 671  * Uses Quicksort + Insertion sort for small arrays
 672  */
 673
 674 int
 675 slap_sort_vals(
 676         Modifications *ml,
 677         const char **text,
 678         int *dup,
 679         void *ctx )
 680 {
 681         AttributeDescription *ad;
 682         MatchingRule *mr;
 683         int istack[sizeof(int)*16];
 684         int i, j, k, l, ir, jstack, match, *ix, itmp, nvals, rc;
 685         int is_norm;
 686         struct berval a, *cv;
 687
 688 #define SMALL   8
 689 #define SWAP(a,b,tmp)   tmp=(a);(a)=(b);(b)=tmp
 690 #define COMP(a,b)       match=0; rc = ordered_value_match( &match, \
 691                                                 ad, mr, SLAP_MR_EQUALITY \
 692                                                                 | SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX \
 693                                                                 | SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH \
 694                                                                 | SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH, \
 695                                                                 &(a), &(b), text );
 696
 697 #define IX(x)   ix[x]
 698 #define EXCH(x,y)       SWAP(ix[x],ix[y],itmp)
 699 #define SETA(x) itmp = ix[x]; a = cv[itmp]
 700 #define GETA(x) ix[x] = itmp;
 701 #define SET(x,y)        ix[x] = ix[y]
 702
 703         ad = ml->sml_desc;
 704         nvals = ml->sml_numvals;
 705
 706         /* For Modifications, sml_nvalues is NULL if normalization wasn't needed.
 707          * For Attributes, sml_nvalues == sml_values when normalization isn't needed.
 708          */
 709         if ( ml->sml_nvalues && ml->sml_nvalues != ml->sml_values ) {
 710                 cv = ml->sml_nvalues;
 711                 is_norm = 1;
 712         } else {
 713                 cv = ml->sml_values;
 714                 is_norm = 0;
 715         }
 716
 717         if ( ad == slap_schema.si_ad_objectClass )
 718                 mr = NULL;      /* shortcut matching */
 719         else
 720                 mr = ad->ad_type->sat_equality;
 721
 722         /* record indices to preserve input ordering */
 723         ix = slap_sl_malloc( nvals * sizeof(int), ctx );
 724         for (i=0; i<nvals; i++) ix[i] = i;
 725
 726         ir = nvals-1;
 727         l = 0;
 728         jstack = 0;
 729
 730         for(;;) {
 731                 if (ir - l < SMALL) {   /* Insertion sort */
 732                         match=1;
 733                         for (j=l+1;j<=ir;j++) {
 734                                 SETA(j);
 735                                 for (i=j-1;i>=0;i--) {
 736                                         COMP(cv[IX(i)], a);
 737                                         if ( match <= 0 )
 738                                                 break;
 739                                         SET(i+1,i);
 740                                 }
 741                                 GETA(i+1);
 742                                 if ( match == 0 ) goto done;
 743                         }
 744                         if ( jstack == 0 ) break;
 745                         if ( match == 0 ) break;
 746                         ir = istack[jstack--];
 747                         l = istack[jstack--];
 748                 } else {
 749                         k = (l + ir) >> 1;      /* Choose median of left, center, right */
 750                         EXCH(k, l+1);
 751                         COMP( cv[IX(l)], cv[IX(ir)] );
 752                         if ( match > 0 ) {
 753                                 EXCH(l, ir);
 754                         } else if ( match == 0 ) {
 755                                 i = ir;
 756                                 break;
 757                         }
 758                         COMP( cv[IX(l+1)], cv[IX(ir)] );
 759                         if ( match > 0 ) {
 760                                 EXCH(l+1, ir);
 761                         } else if ( match == 0 ) {
 762                                 i = ir;
 763                                 break;
 764                         }
 765                         COMP( cv[IX(l)], cv[IX(l+1)] );
 766                         if ( match > 0 ) {
 767                                 EXCH(l, l+1);
 768                         } else if ( match == 0 ) {
 769                                 i = l;
 770                                 break;
 771                         }
 772                         i = l+1;
 773                         j = ir;
 774                         a = cv[IX(i)];
 775                         for(;;) {
 776                                 do {
 777                                         i++;
 778                                         COMP( cv[IX(i)], a );
 779                                 } while( match < 0 );
 780                                 while( match > 0 ) {
 781                                         j--;
 782                                         COMP( cv[IX(j)], a );
 783                                 }
 784                                 if (j < i) {
 785                                         match = 1;
 786                                         break;
 787                                 }
 788                                 if ( match == 0 ) {
 789                                         i = l+1;
 790                                         break;
 791                                 }
 792                                 EXCH(i,j);
 793                         }
 794                         if ( match == 0 )
 795                                 break;
 796                         EXCH(l+1,j);
 797                         jstack += 2;
 798                         if (ir-i+1 >= j) {
 799                                 istack[jstack] = ir;
 800                                 istack[jstack-1] = i;
 801                                 ir = j;
 802                         } else {
 803                                 istack[jstack] = j;
 804                                 istack[jstack-1] = l;
 805                                 l = i;
 806                         }
 807                 }
 808         }
 809         done:
 810         if ( i >= 0 )
 811                 *dup = ix[i];
 812
 813         /* For sorted attributes, put the values in index order */
 814         if ( rc == LDAP_SUCCESS && match &&
 815                 ( ad->ad_type->sat_flags & SLAP_AT_SORTED_VAL )) {
 816                 BerVarray tmpv = slap_sl_malloc( sizeof( struct berval ) * nvals, ctx );
 817                 for ( i = 0; i<nvals; i++ )
 818                         tmpv[i] = cv[ix[i]];
 819                 for ( i = 0; i<nvals; i++ )
 820                         cv[i] = tmpv[i];
 821                 /* Check if the non-normalized array needs to move too */
 822                 if ( is_norm ) {
 823                         cv = ml->sml_values;
 824                         for ( i = 0; i<nvals; i++ )
 825                                 tmpv[i] = cv[ix[i]];
 826                         for ( i = 0; i<nvals; i++ )
 827                                 cv[i] = tmpv[i];
 828                 }
 829                 slap_sl_free( tmpv, ctx );
 830         }
 831
 832         slap_sl_free( ix, ctx );
 833
 834         if ( rc != LDAP_SUCCESS ) {
 835                 return rc;
 836         } else if ( match == 0 ) {
 837                 /* value exists already */
 838                 assert( i >= 0 );
 839                 assert( i < nvals );
 840                 return LDAP_TYPE_OR_VALUE_EXISTS;
 841         }
 842         return LDAP_SUCCESS;
 843 }
 844
 845 /* Enter with bv->bv_len = sizeof buffer, returns with
 846  * actual length of string
 847  */
 848 void slap_timestamp( time_t *tm, struct berval *bv )
 849 {
 850         struct tm *ltm;
 851 #ifdef HAVE_GMTIME_R
 852         struct tm ltm_buf;
 853
 854         ltm = gmtime_r( tm, &ltm_buf );
 855 #else
 856         ldap_pvt_thread_mutex_lock( &gmtime_mutex );
 857         ltm = gmtime( tm );
 858 #endif
 859
 860         bv->bv_len = lutil_gentime( bv->bv_val, bv->bv_len, ltm );
 861
 862 #ifndef HAVE_GMTIME_R
 863         ldap_pvt_thread_mutex_unlock( &gmtime_mutex );
 864 #endif
 865 }
 866
 867 /* Called for all modify and modrdn ops. If the current op was replicated
 868  * from elsewhere, all of the attrs should already be present.
 869  */
 870 void slap_mods_opattrs(
 871         Operation *op,
 872         Modifications **modsp,
 873         int manage_ctxcsn )
 874 {
 875         struct berval name, timestamp, csn = BER_BVNULL;
 876         struct berval nname;
 877         char timebuf[ LDAP_LUTIL_GENTIME_BUFSIZE ];
 878         char csnbuf[ LDAP_LUTIL_CSNSTR_BUFSIZE ];
 879         Modifications *mod, **modtail, *modlast;
 880         int gotcsn = 0, gotmname = 0, gotmtime = 0;
 881
 882         if ( SLAP_LASTMOD( op->o_bd ) && !op->orm_no_opattrs ) {
 883                 char *ptr;
 884                 timestamp.bv_val = timebuf;
 885                 for ( modtail = modsp; *modtail; modtail = &(*modtail)->sml_next ) {
 886                         if ( (*modtail)->sml_op != LDAP_MOD_ADD &&
 887                                 (*modtail)->sml_op != SLAP_MOD_SOFTADD &&
 888                                 (*modtail)->sml_op != LDAP_MOD_REPLACE )
 889                         {
 890                                 continue;
 891                         }
 892
 893                         if ( (*modtail)->sml_desc == slap_schema.si_ad_entryCSN )
 894                         {
 895                                 csn = (*modtail)->sml_values[0];
 896                                 gotcsn = 1;
 897
 898                         } else if ( (*modtail)->sml_desc == slap_schema.si_ad_modifiersName )
 899                         {
 900                                 gotmname = 1;
 901
 902                         } else if ( (*modtail)->sml_desc == slap_schema.si_ad_modifyTimestamp )
 903                         {
 904                                 gotmtime = 1;
 905                         }
 906                 }
 907
 908                 if ( BER_BVISEMPTY( &op->o_csn )) {
 909                         if ( !gotcsn ) {
 910                                 csn.bv_val = csnbuf;
 911                                 csn.bv_len = sizeof( csnbuf );
 912                                 slap_get_csn( op, &csn, manage_ctxcsn );
 913
 914                         } else {
 915                                 if ( manage_ctxcsn ) {
 916                                         slap_queue_csn( op, &csn );
 917                                 }
 918                         }
 919
 920                 } else {
 921                         csn = op->o_csn;
 922                 }
 923
 924                 ptr = ber_bvchr( &csn, '#' );
 925                 if ( ptr ) {
 926                         timestamp.bv_len = STRLENOF("YYYYMMDDHHMMSSZ");
 927                         AC_MEMCPY( timebuf, csn.bv_val, timestamp.bv_len );
 928                         timebuf[timestamp.bv_len-1] = 'Z';
 929                         timebuf[timestamp.bv_len] = '\0';
 930
 931                 } else {
 932                         time_t now = slap_get_time();
 933
 934                         timestamp.bv_len = sizeof(timebuf);
 935
 936                         slap_timestamp( &now, &timestamp );
 937                 }
 938
 939                 if ( BER_BVISEMPTY( &op->o_dn ) ) {
 940                         BER_BVSTR( &name, SLAPD_ANONYMOUS );
 941                         nname = name;
 942
 943                 } else {
 944                         name = op->o_dn;
 945                         nname = op->o_ndn;
 946                 }
 947
 948                 if ( !gotcsn ) {
 949                         mod = (Modifications *) ch_malloc( sizeof( Modifications ) );
 950                         mod->sml_op = LDAP_MOD_REPLACE;
 951                         mod->sml_flags = SLAP_MOD_INTERNAL;
 952                         mod->sml_next = NULL;
 953                         BER_BVZERO( &mod->sml_type );
 954                         mod->sml_desc = slap_schema.si_ad_entryCSN;
 955                         mod->sml_numvals = 1;
 956                         mod->sml_values = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
 957                         ber_dupbv( &mod->sml_values[0], &csn );
 958                         BER_BVZERO( &mod->sml_values[1] );
 959                         assert( !BER_BVISNULL( &mod->sml_values[0] ) );
 960                         mod->sml_nvalues = NULL;
 961                         *modtail = mod;
 962                         modlast = mod;
 963                         modtail = &mod->sml_next;
 964                 }
 965
 966                 if ( !gotmname ) {
 967                         mod = (Modifications *) ch_malloc( sizeof( Modifications ) );
 968                         mod->sml_op = LDAP_MOD_REPLACE;
 969                         mod->sml_flags = SLAP_MOD_INTERNAL;
 970                         mod->sml_next = NULL;
 971                         BER_BVZERO( &mod->sml_type );
 972                         mod->sml_desc = slap_schema.si_ad_modifiersName;
 973                         mod->sml_numvals = 1;
 974                         mod->sml_values = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
 975                         ber_dupbv( &mod->sml_values[0], &name );
 976                         BER_BVZERO( &mod->sml_values[1] );
 977                         assert( !BER_BVISNULL( &mod->sml_values[0] ) );
 978                         mod->sml_nvalues =
 979                                 (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
 980                         ber_dupbv( &mod->sml_nvalues[0], &nname );
 981                         BER_BVZERO( &mod->sml_nvalues[1] );
 982                         assert( !BER_BVISNULL( &mod->sml_nvalues[0] ) );
 983                         *modtail = mod;
 984                         modtail = &mod->sml_next;
 985                 }
 986
 987                 if ( !gotmtime ) {
 988                         mod = (Modifications *) ch_malloc( sizeof( Modifications ) );
 989                         mod->sml_op = LDAP_MOD_REPLACE;
 990                         mod->sml_flags = SLAP_MOD_INTERNAL;
 991                         mod->sml_next = NULL;
 992                         BER_BVZERO( &mod->sml_type );
 993                         mod->sml_desc = slap_schema.si_ad_modifyTimestamp;
 994                         mod->sml_numvals = 1;
 995                         mod->sml_values = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
 996                         ber_dupbv( &mod->sml_values[0], &timestamp );
 997                         BER_BVZERO( &mod->sml_values[1] );
 998                         assert( !BER_BVISNULL( &mod->sml_values[0] ) );
 999                         mod->sml_nvalues = NULL;
1000                         *modtail = mod;
1001                         modtail = &mod->sml_next;
1002                 }
1003         }
1004 }
1005
1006 int
1007 slap_parse_modlist(
1008         Operation *op,
1009         SlapReply *rs,
1010         BerElement *ber,
1011         req_modify_s *ms )
1012 {
1013         ber_tag_t       tag;
1014         ber_len_t       len;
1015         char            *last;
1016         Modifications   **modtail = &ms->rs_mods.rs_modlist;
1017
1018         ms->rs_mods.rs_modlist = NULL;
1019         ms->rs_increment = 0;
1020
1021         rs->sr_err = LDAP_SUCCESS;
1022
1023         /* collect modifications & save for later */
1024         for ( tag = ber_first_element( ber, &len, &last );
1025                 tag != LBER_DEFAULT;
1026                 tag = ber_next_element( ber, &len, last ) )
1027         {
1028                 ber_int_t mop;
1029                 Modifications tmp, *mod;
1030
1031                 tmp.sml_nvalues = NULL;
1032
1033                 if ( ber_scanf( ber, "{e{m[W]}}", &mop,
1034                     &tmp.sml_type, &tmp.sml_values ) == LBER_ERROR )
1035                 {
1036                         rs->sr_text = "decoding modlist error";
1037                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1038                         goto done;
1039                 }
1040
1041                 mod = (Modifications *) ch_malloc( sizeof(Modifications) );
1042                 mod->sml_op = mop;
1043                 mod->sml_flags = 0;
1044                 mod->sml_type = tmp.sml_type;
1045                 mod->sml_values = tmp.sml_values;
1046                 mod->sml_nvalues = NULL;
1047                 mod->sml_desc = NULL;
1048                 mod->sml_next = NULL;
1049                 *modtail = mod;
1050
1051                 switch( mop ) {
1052                 case LDAP_MOD_ADD:
1053                         if ( mod->sml_values == NULL ) {
1054                                 rs->sr_text = "modify/add operation requires values";
1055                                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1056                                 goto done;
1057                         }
1058
1059                         /* fall through */
1060
1061                 case LDAP_MOD_DELETE:
1062                 case LDAP_MOD_REPLACE:
1063                         break;
1064
1065                 case LDAP_MOD_INCREMENT:
1066                         if( op->o_protocol >= LDAP_VERSION3 ) {
1067                                 ms->rs_increment++;
1068                                 if ( mod->sml_values == NULL ) {
1069                                         rs->sr_text = "modify/increment operation requires value";
1070                                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1071                                         goto done;
1072                                 }
1073
1074                                 if ( !BER_BVISNULL( &mod->sml_values[ 1 ] ) ) {
1075                                         rs->sr_text = "modify/increment operation requires single value";
1076                                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1077                                         goto done;
1078                                 }
1079
1080                                 break;
1081                         }
1082                         /* fall thru */
1083
1084                 default:
1085                         rs->sr_text = "unrecognized modify operation";
1086                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1087                         goto done;
1088                 }
1089
1090                 modtail = &mod->sml_next;
1091         }
1092         *modtail = NULL;
1093
1094 done:
1095         if ( rs->sr_err != LDAP_SUCCESS ) {
1096                 slap_mods_free( ms->rs_mods.rs_modlist, 1 );
1097                 ms->rs_mods.rs_modlist = NULL;
1098                 ms->rs_increment = 0;
1099         }
1100
1101         return rs->sr_err;
1102 }
1103