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

   1 /* $OpenLDAP$ */
   2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   3  *
   4  * Copyright 1998-2007 The OpenLDAP Foundation.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted only as authorized by the OpenLDAP
   9  * Public License.
  10  *
  11  * A copy of this license is available in the file LICENSE in the
  12  * top-level directory of the distribution or, alternatively, at
  13  * <http://www.OpenLDAP.org/license.html>.
  14  */
  15 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
  16  * All rights reserved.
  17  *
  18  * Redistribution and use in source and binary forms are permitted
  19  * provided that this notice is preserved and that due credit is given
  20  * to the University of Michigan at Ann Arbor. The name of the University
  21  * may not be used to endorse or promote products derived from this
  22  * software without specific prior written permission. This software
  23  * is provided ``as is'' without express or implied warranty.
  24  */
  25
  26 #include "portable.h"
  27
  28 #include <stdio.h>
  29
  30 #include <ac/socket.h>
  31 #include <ac/string.h>
  32 #include <ac/time.h>
  33
  34 #include "slap.h"
  35 #include "lutil.h"
  36
  37
  38 int
  39 do_modify(
  40     Operation   *op,
  41     SlapReply   *rs )
  42 {
  43         struct berval dn = BER_BVNULL;
  44         char            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 ( get_relax( op ) ) {
 387                         if ( ml->sml_desc->ad_type->sat_flags & SLAP_AT_MANAGEABLE ) {
 388                                 ml->sml_flags |= SLAP_MOD_MANAGING;
 389                                 continue;
 390                         }
 391
 392                         /* attribute not manageable */
 393                         snprintf( textbuf, textlen,
 394                                 "%s: no-user-modification attribute not manageable",
 395                                 ml->sml_type.bv_val );
 396
 397                 } else {
 398                         /* user modification disallowed */
 399                         snprintf( textbuf, textlen,
 400                                 "%s: no user modification allowed",
 401                                 ml->sml_type.bv_val );
 402                 }
 403
 404                 *text = textbuf;
 405                 return LDAP_CONSTRAINT_VIOLATION;
 406         }
 407
 408         return LDAP_SUCCESS;
 409 }
 410
 411 int
 412 slap_mods_no_repl_user_mod_check(
 413         Operation *op,
 414         Modifications *ml,
 415         const char **text,
 416         char *textbuf,
 417         size_t textlen )
 418 {
 419         Modifications *mods;
 420         Modifications *modp;
 421
 422         for ( mods = ml; mods != NULL; mods = mods->sml_next ) {
 423                 assert( mods->sml_op == LDAP_MOD_ADD );
 424
 425                 /* check doesn't already appear */
 426                 for ( modp = ml; modp != NULL; modp = modp->sml_next ) {
 427                         if ( mods->sml_desc == modp->sml_desc && mods != modp ) {
 428                                 snprintf( textbuf, textlen,
 429                                         "attribute '%s' provided more than once",
 430                                         mods->sml_desc->ad_cname.bv_val );
 431                                 *text = textbuf;
 432                                 return LDAP_TYPE_OR_VALUE_EXISTS;
 433                         }
 434                 }
 435         }
 436
 437         return LDAP_SUCCESS;
 438 }
 439
 440 /*
 441  * Do basic attribute type checking and syntax validation.
 442  */
 443 int slap_mods_check(
 444         Operation *op,
 445         Modifications *ml,
 446         const char **text,
 447         char *textbuf,
 448         size_t textlen,
 449         void *ctx )
 450 {
 451         int rc;
 452
 453         for( ; ml != NULL; ml = ml->sml_next ) {
 454                 AttributeDescription *ad = NULL;
 455
 456                 /* convert to attribute description */
 457                 if ( ml->sml_desc == NULL ) {
 458                         rc = slap_bv2ad( &ml->sml_type, &ml->sml_desc, text );
 459                         if( rc != LDAP_SUCCESS ) {
 460                                 if ( get_no_schema_check( op )) {
 461                                         rc = slap_bv2undef_ad( &ml->sml_type, &ml->sml_desc,
 462                                                 text, 0 );
 463                                 }
 464                         }
 465                         if( rc != LDAP_SUCCESS ) {
 466                                 snprintf( textbuf, textlen, "%s: %s",
 467                                         ml->sml_type.bv_val, *text );
 468                                 *text = textbuf;
 469                                 return rc;
 470                         }
 471                 }
 472
 473                 ad = ml->sml_desc;
 474
 475                 if( slap_syntax_is_binary( ad->ad_type->sat_syntax )
 476                         && !slap_ad_is_binary( ad ))
 477                 {
 478                         /* attribute requires binary transfer */
 479                         snprintf( textbuf, textlen,
 480                                 "%s: requires ;binary transfer",
 481                                 ml->sml_type.bv_val );
 482                         *text = textbuf;
 483                         return LDAP_UNDEFINED_TYPE;
 484                 }
 485
 486                 if( !slap_syntax_is_binary( ad->ad_type->sat_syntax )
 487                         && slap_ad_is_binary( ad ))
 488                 {
 489                         /* attribute does not require binary transfer */
 490                         snprintf( textbuf, textlen,
 491                                 "%s: disallows ;binary transfer",
 492                                 ml->sml_type.bv_val );
 493                         *text = textbuf;
 494                         return LDAP_UNDEFINED_TYPE;
 495                 }
 496
 497                 if( slap_ad_is_tag_range( ad )) {
 498                         /* attribute requires binary transfer */
 499                         snprintf( textbuf, textlen,
 500                                 "%s: inappropriate use of tag range option",
 501                                 ml->sml_type.bv_val );
 502                         *text = textbuf;
 503                         return LDAP_UNDEFINED_TYPE;
 504                 }
 505
 506 #if 0
 507                 if ( is_at_obsolete( ad->ad_type ) &&
 508                         (( ml->sml_op != LDAP_MOD_REPLACE &&
 509                                 ml->sml_op != LDAP_MOD_DELETE ) ||
 510                                         ml->sml_values != NULL ))
 511                 {
 512                         /*
 513                          * attribute is obsolete,
 514                          * only allow replace/delete with no values
 515                          */
 516                         snprintf( textbuf, textlen,
 517                                 "%s: attribute is obsolete",
 518                                 ml->sml_type.bv_val );
 519                         *text = textbuf;
 520                         return LDAP_CONSTRAINT_VIOLATION;
 521                 }
 522 #endif
 523
 524                 if ( ml->sml_op == LDAP_MOD_INCREMENT &&
 525 #ifdef SLAPD_REAL_SYNTAX
 526                         !is_at_syntax( ad->ad_type, SLAPD_REAL_SYNTAX ) &&
 527 #endif
 528                         !is_at_syntax( ad->ad_type, SLAPD_INTEGER_SYNTAX ) )
 529                 {
 530                         /*
 531                          * attribute values must be INTEGER or REAL
 532                          */
 533                         snprintf( textbuf, textlen,
 534                                 "%s: attribute syntax inappropriate for increment",
 535                                 ml->sml_type.bv_val );
 536                         *text = textbuf;
 537                         return LDAP_CONSTRAINT_VIOLATION;
 538                 }
 539
 540                 /*
 541                  * check values
 542                  */
 543                 if( ml->sml_values != NULL ) {
 544                         ber_len_t nvals;
 545                         slap_syntax_validate_func *validate =
 546                                 ad->ad_type->sat_syntax->ssyn_validate;
 547                         slap_syntax_transform_func *pretty =
 548                                 ad->ad_type->sat_syntax->ssyn_pretty;
 549
 550                         if( !pretty && !validate ) {
 551                                 *text = "no validator for syntax";
 552                                 snprintf( textbuf, textlen,
 553                                         "%s: no validator for syntax %s",
 554                                         ml->sml_type.bv_val,
 555                                         ad->ad_type->sat_syntax->ssyn_oid );
 556                                 *text = textbuf;
 557                                 return LDAP_INVALID_SYNTAX;
 558                         }
 559
 560                         /*
 561                          * check that each value is valid per syntax
 562                          *      and pretty if appropriate
 563                          */
 564                         for ( nvals = 0; !BER_BVISNULL( &ml->sml_values[nvals] ); nvals++ ) {
 565                                 struct berval pval;
 566
 567                                 if ( pretty ) {
 568                                         rc = ordered_value_pretty( ad,
 569                                                 &ml->sml_values[nvals], &pval, ctx );
 570                                 } else {
 571                                         rc = ordered_value_validate( ad,
 572                                                 &ml->sml_values[nvals], ml->sml_op );
 573                                 }
 574
 575                                 if( rc != 0 ) {
 576                                         snprintf( textbuf, textlen,
 577                                                 "%s: value #%ld invalid per syntax",
 578                                                 ml->sml_type.bv_val, (long) nvals );
 579                                         *text = textbuf;
 580                                         return LDAP_INVALID_SYNTAX;
 581                                 }
 582
 583                                 if( pretty ) {
 584                                         ber_memfree_x( ml->sml_values[nvals].bv_val, ctx );
 585                                         ml->sml_values[nvals] = pval;
 586                                 }
 587                         }
 588                         ml->sml_numvals = nvals;
 589
 590                         /*
 591                          * a rough single value check... an additional check is needed
 592                          * to catch add of single value to existing single valued attribute
 593                          */
 594                         if ((ml->sml_op == LDAP_MOD_ADD || ml->sml_op == LDAP_MOD_REPLACE)
 595                                 && nvals > 1 && is_at_single_value( ad->ad_type ))
 596                         {
 597                                 snprintf( textbuf, textlen,
 598                                         "%s: multiple values provided",
 599                                         ml->sml_type.bv_val );
 600                                 *text = textbuf;
 601                                 return LDAP_CONSTRAINT_VIOLATION;
 602                         }
 603
 604                         /* if the type has a normalizer, generate the
 605                          * normalized values. otherwise leave them NULL.
 606                          *
 607                          * this is different from the rule for attributes
 608                          * in an entry - in an attribute list, the normalized
 609                          * value is set equal to the non-normalized value
 610                          * when there is no normalizer.
 611                          */
 612                         if( nvals && ad->ad_type->sat_equality &&
 613                                 ad->ad_type->sat_equality->smr_normalize )
 614                         {
 615                                 ml->sml_nvalues = ber_memalloc_x(
 616                                         (nvals+1)*sizeof(struct berval), ctx );
 617
 618                                 for ( nvals = 0; !BER_BVISNULL( &ml->sml_values[nvals] ); nvals++ ) {
 619                                         rc = ordered_value_normalize(
 620                                                 SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
 621                                                 ad,
 622                                                 ad->ad_type->sat_equality,
 623                                                 &ml->sml_values[nvals], &ml->sml_nvalues[nvals], ctx );
 624                                         if ( rc ) {
 625                                                 Debug( LDAP_DEBUG_ANY,
 626                                                         "<= str2entry NULL (ssyn_normalize %d)\n",
 627                                                         rc, 0, 0 );
 628                                                 snprintf( textbuf, textlen,
 629                                                         "%s: value #%ld normalization failed",
 630                                                         ml->sml_type.bv_val, (long) nvals );
 631                                                 *text = textbuf;
 632                                                 BER_BVZERO( &ml->sml_nvalues[nvals] );
 633                                                 return rc;
 634                                         }
 635                                 }
 636
 637                                 BER_BVZERO( &ml->sml_nvalues[nvals] );
 638                         }
 639
 640                         /* check for duplicates, but ignore Deletes.
 641                          */
 642                         if( nvals > 1 && ml->sml_op != LDAP_MOD_DELETE ) {
 643                                 int i;
 644                                 rc = slap_sort_vals( ml, text, &i, ctx );
 645                                 if ( rc == LDAP_TYPE_OR_VALUE_EXISTS ) {
 646                                         /* value exists already */
 647                                         snprintf( textbuf, textlen,
 648                                                 "%s: value #%d provided more than once",
 649                                                 ml->sml_desc->ad_cname.bv_val, i );
 650                                         *text = textbuf;
 651                                 }
 652                                 if ( rc )
 653                                         return rc;
 654                         }
 655                 } else {
 656                         ml->sml_numvals = 0;
 657                 }
 658         }
 659
 660         return LDAP_SUCCESS;
 661 }
 662
 663 /* Sort a set of values. An (Attribute *) may be used interchangeably here
 664  * instead of a (Modifications *) structure.
 665  *
 666  * Uses Quicksort + Insertion sort for small arrays
 667  */
 668
 669 int
 670 slap_sort_vals(
 671         Modifications *ml,
 672         const char **text,
 673         int *dup,
 674         void *ctx )
 675 {
 676         AttributeDescription *ad;
 677         MatchingRule *mr;
 678         int istack[sizeof(int)*16];
 679         int i, j, k, l, ir, jstack, match, *ix, itmp, nvals, rc;
 680         int is_norm;
 681         struct berval a, *cv;
 682
 683 #define SMALL   8
 684 #define SWAP(a,b,tmp)   tmp=(a);(a)=(b);(b)=tmp
 685 #define COMP(a,b)       match=0; rc = ordered_value_match( &match, \
 686                                                 ad, mr, SLAP_MR_EQUALITY \
 687                                                                 | SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX \
 688                                                                 | SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH \
 689                                                                 | SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH, \
 690                                                                 &(a), &(b), text );
 691
 692 #define IX(x)   ix[x]
 693 #define EXCH(x,y)       SWAP(ix[x],ix[y],itmp)
 694 #define SETA(x) itmp = ix[x]; a = cv[itmp]
 695 #define GETA(x) ix[x] = itmp;
 696 #define SET(x,y)        ix[x] = ix[y]
 697
 698         ad = ml->sml_desc;
 699         nvals = ml->sml_numvals;
 700
 701         /* For Modifications, sml_nvalues is NULL if normalization wasn't needed.
 702          * For Attributes, sml_nvalues == sml_values when normalization isn't needed.
 703          */
 704         if ( ml->sml_nvalues && ml->sml_nvalues != ml->sml_values ) {
 705                 cv = ml->sml_nvalues;
 706                 is_norm = 1;
 707         } else {
 708                 cv = ml->sml_values;
 709                 is_norm = 0;
 710         }
 711
 712         if ( ad == slap_schema.si_ad_objectClass )
 713                 mr = NULL;      /* shortcut matching */
 714         else
 715                 mr = ad->ad_type->sat_equality;
 716
 717         /* record indices to preserve input ordering */
 718         ix = slap_sl_malloc( nvals * sizeof(int), ctx );
 719         for (i=0; i<nvals; i++) ix[i] = i;
 720
 721         ir = nvals-1;
 722         l = 0;
 723         jstack = 0;
 724
 725         for(;;) {
 726                 if (ir - l < SMALL) {   /* Insertion sort */
 727                         match=1;
 728                         for (j=l+1;j<=ir;j++) {
 729                                 SETA(j);
 730                                 for (i=j-1;i>=0;i--) {
 731                                         COMP(cv[IX(i)], a);
 732                                         if ( match <= 0 )
 733                                                 break;
 734                                         SET(i+1,i);
 735                                 }
 736                                 GETA(i+1);
 737                                 if ( match == 0 ) goto done;
 738                         }
 739                         if ( jstack == 0 ) break;
 740                         if ( match == 0 ) break;
 741                         ir = istack[jstack--];
 742                         l = istack[jstack--];
 743                 } else {
 744                         k = (l + ir) >> 1;      /* Choose median of left, center, right */
 745                         EXCH(k, l+1);
 746                         COMP( cv[IX(l)], cv[IX(ir)] );
 747                         if ( match > 0 ) {
 748                                 EXCH(l, ir);
 749                         } else if ( match == 0 ) {
 750                                 i = ir;
 751                                 break;
 752                         }
 753                         COMP( cv[IX(l+1)], cv[IX(ir)] );
 754                         if ( match > 0 ) {
 755                                 EXCH(l+1, ir);
 756                         } else if ( match == 0 ) {
 757                                 i = ir;
 758                                 break;
 759                         }
 760                         COMP( cv[IX(l)], cv[IX(l+1)] );
 761                         if ( match > 0 ) {
 762                                 EXCH(l, l+1);
 763                         } else if ( match == 0 ) {
 764                                 i = l;
 765                                 break;
 766                         }
 767                         i = l+1;
 768                         j = ir;
 769                         a = cv[IX(i)];
 770                         for(;;) {
 771                                 do {
 772                                         i++;
 773                                         COMP( cv[IX(i)], a );
 774                                 } while( match < 0 );
 775                                 while( match > 0 ) {
 776                                         j--;
 777                                         COMP( cv[IX(j)], a );
 778                                 }
 779                                 if (j < i) {
 780                                         match = 1;
 781                                         break;
 782                                 }
 783                                 if ( match == 0 ) {
 784                                         i = l+1;
 785                                         break;
 786                                 }
 787                                 EXCH(i,j);
 788                         }
 789                         if ( match == 0 )
 790                                 break;
 791                         EXCH(l+1,j);
 792                         jstack += 2;
 793                         if (ir-i+1 >= j) {
 794                                 istack[jstack] = ir;
 795                                 istack[jstack-1] = i;
 796                                 ir = j;
 797                         } else {
 798                                 istack[jstack] = j;
 799                                 istack[jstack-1] = l;
 800                                 l = i;
 801                         }
 802                 }
 803         }
 804         done:
 805         if ( i >= 0 )
 806                 *dup = ix[i];
 807
 808         /* For sorted attributes, put the values in index order */
 809         if ( rc == LDAP_SUCCESS && match &&
 810                 ( ad->ad_type->sat_flags & SLAP_AT_SORTED_VAL )) {
 811                 BerVarray tmpv = slap_sl_malloc( sizeof( struct berval ) * nvals, ctx );
 812                 for ( i = 0; i<nvals; i++ )
 813                         tmpv[i] = cv[ix[i]];
 814                 for ( i = 0; i<nvals; i++ )
 815                         cv[i] = tmpv[i];
 816                 /* Check if the non-normalized array needs to move too */
 817                 if ( is_norm ) {
 818                         cv = ml->sml_values;
 819                         for ( i = 0; i<nvals; i++ )
 820                                 tmpv[i] = cv[ix[i]];
 821                         for ( i = 0; i<nvals; i++ )
 822                                 cv[i] = tmpv[i];
 823                 }
 824                 slap_sl_free( tmpv, ctx );
 825         }
 826
 827         slap_sl_free( ix, ctx );
 828
 829         if ( rc != LDAP_SUCCESS ) {
 830                 return rc;
 831         } else if ( match == 0 ) {
 832                 /* value exists already */
 833                 assert( i >= 0 );
 834                 assert( i < nvals );
 835                 return LDAP_TYPE_OR_VALUE_EXISTS;
 836         }
 837         return LDAP_SUCCESS;
 838 }
 839
 840 /* Enter with bv->bv_len = sizeof buffer, returns with
 841  * actual length of string
 842  */
 843 void slap_timestamp( time_t *tm, struct berval *bv )
 844 {
 845         struct tm *ltm;
 846 #ifdef HAVE_GMTIME_R
 847         struct tm ltm_buf;
 848
 849         ltm = gmtime_r( tm, &ltm_buf );
 850 #else
 851         ldap_pvt_thread_mutex_lock( &gmtime_mutex );
 852         ltm = gmtime( tm );
 853 #endif
 854
 855         bv->bv_len = lutil_gentime( bv->bv_val, bv->bv_len, ltm );
 856
 857 #ifndef HAVE_GMTIME_R
 858         ldap_pvt_thread_mutex_unlock( &gmtime_mutex );
 859 #endif
 860 }
 861
 862 /* Called for all modify and modrdn ops. If the current op was replicated
 863  * from elsewhere, all of the attrs should already be present.
 864  */
 865 void slap_mods_opattrs(
 866         Operation *op,
 867         Modifications **modsp,
 868         int manage_ctxcsn )
 869 {
 870         struct berval name, timestamp, csn = BER_BVNULL;
 871         struct berval nname;
 872         char timebuf[ LDAP_LUTIL_GENTIME_BUFSIZE ];
 873         char csnbuf[ LDAP_LUTIL_CSNSTR_BUFSIZE ];
 874         Modifications *mod, **modtail, *modlast;
 875         int gotcsn = 0, gotmname = 0, gotmtime = 0;
 876
 877         if ( SLAP_LASTMOD( op->o_bd ) && !op->orm_no_opattrs ) {
 878                 char *ptr;
 879                 timestamp.bv_val = timebuf;
 880                 for ( modtail = modsp; *modtail; modtail = &(*modtail)->sml_next ) {
 881                         if ( (*modtail)->sml_op != LDAP_MOD_ADD &&
 882                                 (*modtail)->sml_op != SLAP_MOD_SOFTADD &&
 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