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 1998-2009 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                 goto cleanup;
 272         }
 273
 274         /*
 275          * do the modify if 1 && (2 || 3)
 276          * 1) there is a modify function implemented in this backend;
 277          * 2) this backend is master for what it holds;
 278          * 3) it's a replica and the dn supplied is the update_ndn.
 279          */
 280         if ( op->o_bd->be_modify ) {
 281                 /* do the update here */
 282                 int repl_user = be_isupdate( op );
 283
 284                 /*
 285                  * Multimaster slapd does not have to check for replicator dn
 286                  * because it accepts each modify request
 287                  */
 288                 if ( !SLAP_SINGLE_SHADOW(op->o_bd) || repl_user ) {
 289                         int update = !BER_BVISEMPTY( &op->o_bd->be_update_ndn );
 290
 291                         op->o_bd = op_be;
 292
 293                         if ( !update ) {
 294                                 rs->sr_err = slap_mods_no_user_mod_check( op, op->orm_modlist,
 295                                         &rs->sr_text, textbuf, textlen );
 296                                 if ( rs->sr_err != LDAP_SUCCESS ) {
 297                                         send_ldap_result( op, rs );
 298                                         goto cleanup;
 299                                 }
 300                         }
 301                         op->o_bd->be_modify( op, rs );
 302
 303                 } else { /* send a referral */
 304                         BerVarray defref = op->o_bd->be_update_refs
 305                                 ? op->o_bd->be_update_refs : default_referral;
 306                         if ( defref != NULL ) {
 307                                 rs->sr_ref = referral_rewrite( defref,
 308                                         NULL, &op->o_req_dn,
 309                                         LDAP_SCOPE_DEFAULT );
 310                                 if ( rs->sr_ref == NULL ) {
 311                                         /* FIXME: must duplicate, because
 312                                          * overlays may muck with it */
 313                                         rs->sr_ref = defref;
 314                                 }
 315                                 rs->sr_err = LDAP_REFERRAL;
 316                                 send_ldap_result( op, rs );
 317                                 if ( rs->sr_ref != defref ) {
 318                                         ber_bvarray_free( rs->sr_ref );
 319                                 }
 320
 321                         } else {
 322                                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 323                                         "shadow context; no update referral" );
 324                         }
 325                 }
 326
 327         } else {
 328                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 329                     "operation not supported within namingContext" );
 330         }
 331
 332 cleanup:;
 333         op->o_bd = bd;
 334         return rs->sr_err;
 335 }
 336
 337 /*
 338  * Obsolete constraint checking.
 339  */
 340 int
 341 slap_mods_obsolete_check(
 342         Operation *op,
 343         Modifications *ml,
 344         const char **text,
 345         char *textbuf,
 346         size_t textlen )
 347 {
 348         if( get_relax( op ) ) return LDAP_SUCCESS;
 349
 350         for ( ; ml != NULL; ml = ml->sml_next ) {
 351                 if ( is_at_obsolete( ml->sml_desc->ad_type ) &&
 352                         (( ml->sml_op != LDAP_MOD_REPLACE &&
 353                                 ml->sml_op != LDAP_MOD_DELETE ) ||
 354                                         ml->sml_values != NULL ))
 355                 {
 356                         /*
 357                          * attribute is obsolete,
 358                          * only allow replace/delete with no values
 359                          */
 360                         snprintf( textbuf, textlen,
 361                                 "%s: attribute is obsolete",
 362                                 ml->sml_type.bv_val );
 363                         *text = textbuf;
 364                         return LDAP_CONSTRAINT_VIOLATION;
 365                 }
 366         }
 367
 368         return LDAP_SUCCESS;
 369 }
 370
 371 /*
 372  * No-user-modification constraint checking.
 373  */
 374 int
 375 slap_mods_no_user_mod_check(
 376         Operation *op,
 377         Modifications *ml,
 378         const char **text,
 379         char *textbuf,
 380         size_t textlen )
 381 {
 382         for ( ; ml != NULL; ml = ml->sml_next ) {
 383                 if ( !is_at_no_user_mod( ml->sml_desc->ad_type ) ) {
 384                         continue;
 385                 }
 386
 387                 if ( ml->sml_flags & SLAP_MOD_INTERNAL ) {
 388                         continue;
 389                 }
 390
 391                 if ( get_relax( op ) ) {
 392                         if ( ml->sml_desc->ad_type->sat_flags & SLAP_AT_MANAGEABLE ) {
 393                                 ml->sml_flags |= SLAP_MOD_MANAGING;
 394                                 continue;
 395                         }
 396
 397                         /* attribute not manageable */
 398                         snprintf( textbuf, textlen,
 399                                 "%s: no-user-modification attribute not manageable",
 400                                 ml->sml_type.bv_val );
 401
 402                 } else {
 403                         /* user modification disallowed */
 404                         snprintf( textbuf, textlen,
 405                                 "%s: no user modification allowed",
 406                                 ml->sml_type.bv_val );
 407                 }
 408
 409                 *text = textbuf;
 410                 return LDAP_CONSTRAINT_VIOLATION;
 411         }
 412
 413         return LDAP_SUCCESS;
 414 }
 415
 416 int
 417 slap_mods_no_repl_user_mod_check(
 418         Operation *op,
 419         Modifications *ml,
 420         const char **text,
 421         char *textbuf,
 422         size_t textlen )
 423 {
 424         Modifications *mods;
 425         Modifications *modp;
 426
 427         for ( mods = ml; mods != NULL; mods = mods->sml_next ) {
 428                 assert( mods->sml_op == LDAP_MOD_ADD );
 429
 430                 /* check doesn't already appear */
 431                 for ( modp = ml; modp != NULL; modp = modp->sml_next ) {
 432                         if ( mods->sml_desc == modp->sml_desc && mods != modp ) {
 433                                 snprintf( textbuf, textlen,
 434                                         "attribute '%s' provided more than once",
 435                                         mods->sml_desc->ad_cname.bv_val );
 436                                 *text = textbuf;
 437                                 return LDAP_TYPE_OR_VALUE_EXISTS;
 438                         }
 439                 }
 440         }
 441
 442         return LDAP_SUCCESS;
 443 }
 444
 445 /*
 446  * Do basic attribute type checking and syntax validation.
 447  */
 448 int slap_mods_check(
 449         Operation *op,
 450         Modifications *ml,
 451         const char **text,
 452         char *textbuf,
 453         size_t textlen,
 454         void *ctx )
 455 {
 456         int rc;
 457
 458         for( ; ml != NULL; ml = ml->sml_next ) {
 459                 AttributeDescription *ad = NULL;
 460
 461                 /* convert to attribute description */
 462                 if ( ml->sml_desc == NULL ) {
 463                         rc = slap_bv2ad( &ml->sml_type, &ml->sml_desc, text );
 464                         if( rc != LDAP_SUCCESS ) {
 465                                 if ( get_no_schema_check( op )) {
 466                                         rc = slap_bv2undef_ad( &ml->sml_type, &ml->sml_desc,
 467                                                 text, 0 );
 468                                 }
 469                         }
 470                         if( rc != LDAP_SUCCESS ) {
 471                                 snprintf( textbuf, textlen, "%s: %s",
 472                                         ml->sml_type.bv_val, *text );
 473                                 *text = textbuf;
 474                                 return rc;
 475                         }
 476                 }
 477
 478                 ad = ml->sml_desc;
 479
 480                 if( slap_syntax_is_binary( ad->ad_type->sat_syntax )
 481                         && !slap_ad_is_binary( ad ))
 482                 {
 483                         /* attribute requires binary transfer */
 484                         snprintf( textbuf, textlen,
 485                                 "%s: requires ;binary transfer",
 486                                 ml->sml_type.bv_val );
 487                         *text = textbuf;
 488                         return LDAP_UNDEFINED_TYPE;
 489                 }
 490
 491                 if( !slap_syntax_is_binary( ad->ad_type->sat_syntax )
 492                         && slap_ad_is_binary( ad ))
 493                 {
 494                         /* attribute does not require binary transfer */
 495                         snprintf( textbuf, textlen,
 496                                 "%s: disallows ;binary transfer",
 497                                 ml->sml_type.bv_val );
 498                         *text = textbuf;
 499                         return LDAP_UNDEFINED_TYPE;
 500                 }
 501
 502                 if( slap_ad_is_tag_range( ad )) {
 503                         /* attribute requires binary transfer */
 504                         snprintf( textbuf, textlen,
 505                                 "%s: inappropriate use of tag range option",
 506                                 ml->sml_type.bv_val );
 507                         *text = textbuf;
 508                         return LDAP_UNDEFINED_TYPE;
 509                 }
 510
 511 #if 0
 512                 if ( is_at_obsolete( ad->ad_type ) &&
 513                         (( ml->sml_op != LDAP_MOD_REPLACE &&
 514                                 ml->sml_op != LDAP_MOD_DELETE ) ||
 515                                         ml->sml_values != NULL ))
 516                 {
 517                         /*
 518                          * attribute is obsolete,
 519                          * only allow replace/delete with no values
 520                          */
 521                         snprintf( textbuf, textlen,
 522                                 "%s: attribute is obsolete",
 523                                 ml->sml_type.bv_val );
 524                         *text = textbuf;
 525                         return LDAP_CONSTRAINT_VIOLATION;
 526                 }
 527 #endif
 528
 529                 if ( ml->sml_op == LDAP_MOD_INCREMENT &&
 530 #ifdef SLAPD_REAL_SYNTAX
 531                         !is_at_syntax( ad->ad_type, SLAPD_REAL_SYNTAX ) &&
 532 #endif
 533                         !is_at_syntax( ad->ad_type, SLAPD_INTEGER_SYNTAX ) )
 534                 {
 535                         /*
 536                          * attribute values must be INTEGER or REAL
 537                          */
 538                         snprintf( textbuf, textlen,
 539                                 "%s: attribute syntax inappropriate for increment",
 540                                 ml->sml_type.bv_val );
 541                         *text = textbuf;
 542                         return LDAP_CONSTRAINT_VIOLATION;
 543                 }
 544
 545                 /*
 546                  * check values
 547                  */
 548                 if( ml->sml_values != NULL ) {
 549                         ber_len_t nvals;
 550                         slap_syntax_validate_func *validate =
 551                                 ad->ad_type->sat_syntax->ssyn_validate;
 552                         slap_syntax_transform_func *pretty =
 553                                 ad->ad_type->sat_syntax->ssyn_pretty;
 554
 555                         if( !pretty && !validate ) {
 556                                 *text = "no validator for syntax";
 557                                 snprintf( textbuf, textlen,
 558                                         "%s: no validator for syntax %s",
 559                                         ml->sml_type.bv_val,
 560                                         ad->ad_type->sat_syntax->ssyn_oid );
 561                                 *text = textbuf;
 562                                 return LDAP_INVALID_SYNTAX;
 563                         }
 564
 565                         /*
 566                          * check that each value is valid per syntax
 567                          *      and pretty if appropriate
 568                          */
 569                         for ( nvals = 0; !BER_BVISNULL( &ml->sml_values[nvals] ); nvals++ ) {
 570                                 struct berval pval;
 571
 572                                 if ( pretty ) {
 573                                         rc = ordered_value_pretty( ad,
 574                                                 &ml->sml_values[nvals], &pval, ctx );
 575                                 } else {
 576                                         rc = ordered_value_validate( ad,
 577                                                 &ml->sml_values[nvals], ml->sml_op );
 578                                 }
 579
 580                                 if( rc != 0 ) {
 581                                         snprintf( textbuf, textlen,
 582                                                 "%s: value #%ld invalid per syntax",
 583                                                 ml->sml_type.bv_val, (long) nvals );
 584                                         *text = textbuf;
 585                                         return LDAP_INVALID_SYNTAX;
 586                                 }
 587
 588                                 if( pretty ) {
 589                                         ber_memfree_x( ml->sml_values[nvals].bv_val, ctx );
 590                                         ml->sml_values[nvals] = pval;
 591                                 }
 592                         }
 593                         ml->sml_values[nvals].bv_len = 0;
 594                         ml->sml_numvals = nvals;
 595
 596                         /*
 597                          * a rough single value check... an additional check is needed
 598                          * to catch add of single value to existing single valued attribute
 599                          */
 600                         if ((ml->sml_op == LDAP_MOD_ADD || ml->sml_op == LDAP_MOD_REPLACE)
 601                                 && nvals > 1 && is_at_single_value( ad->ad_type ))
 602                         {
 603                                 snprintf( textbuf, textlen,
 604                                         "%s: multiple values provided",
 605                                         ml->sml_type.bv_val );
 606                                 *text = textbuf;
 607                                 return LDAP_CONSTRAINT_VIOLATION;
 608                         }
 609
 610                         /* if the type has a normalizer, generate the
 611                          * normalized values. otherwise leave them NULL.
 612                          *
 613                          * this is different from the rule for attributes
 614                          * in an entry - in an attribute list, the normalized
 615                          * value is set equal to the non-normalized value
 616                          * when there is no normalizer.
 617                          */
 618                         if( nvals && ad->ad_type->sat_equality &&
 619                                 ad->ad_type->sat_equality->smr_normalize )
 620                         {
 621                                 ml->sml_nvalues = ber_memalloc_x(
 622                                         (nvals+1)*sizeof(struct berval), ctx );
 623
 624                                 for ( nvals = 0; !BER_BVISNULL( &ml->sml_values[nvals] ); nvals++ ) {
 625                                         rc = ordered_value_normalize(
 626                                                 SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
 627                                                 ad,
 628                                                 ad->ad_type->sat_equality,
 629                                                 &ml->sml_values[nvals], &ml->sml_nvalues[nvals], ctx );
 630                                         if ( rc ) {
 631                                                 Debug( LDAP_DEBUG_ANY,
 632                                                         "<= str2entry NULL (ssyn_normalize %d)\n",
 633                                                         rc, 0, 0 );
 634                                                 snprintf( textbuf, textlen,
 635                                                         "%s: value #%ld normalization failed",
 636                                                         ml->sml_type.bv_val, (long) nvals );
 637                                                 *text = textbuf;
 638                                                 BER_BVZERO( &ml->sml_nvalues[nvals] );
 639                                                 return rc;
 640                                         }
 641                                 }
 642
 643                                 BER_BVZERO( &ml->sml_nvalues[nvals] );
 644                         }
 645
 646                         /* check for duplicates, but ignore Deletes.
 647                          */
 648                         if( nvals > 1 && ml->sml_op != LDAP_MOD_DELETE ) {
 649                                 int i;
 650                                 rc = slap_sort_vals( ml, text, &i, ctx );
 651                                 if ( rc == LDAP_TYPE_OR_VALUE_EXISTS ) {
 652                                         /* value exists already */
 653                                         snprintf( textbuf, textlen,
 654                                                 "%s: value #%d provided more than once",
 655                                                 ml->sml_desc->ad_cname.bv_val, i );
 656                                         *text = textbuf;
 657                                 }
 658                                 if ( rc )
 659                                         return rc;
 660                         }
 661                 } else {
 662                         ml->sml_numvals = 0;
 663                 }
 664         }
 665
 666         return LDAP_SUCCESS;
 667 }
 668
 669 /* Sort a set of values. An (Attribute *) may be used interchangeably here
 670  * instead of a (Modifications *) structure.
 671  *
 672  * Uses Quicksort + Insertion sort for small arrays
 673  */
 674
 675 int
 676 slap_sort_vals(
 677         Modifications *ml,
 678         const char **text,
 679         int *dup,
 680         void *ctx )
 681 {
 682         AttributeDescription *ad;
 683         MatchingRule *mr;
 684         int istack[sizeof(int)*16];
 685         int i, j, k, l, ir, jstack, match, *ix, itmp, nvals, rc;
 686         int is_norm;
 687         struct berval a, *cv;
 688
 689 #define SMALL   8
 690 #define SWAP(a,b,tmp)   tmp=(a);(a)=(b);(b)=tmp
 691 #define COMP(a,b)       match=0; rc = ordered_value_match( &match, \
 692                                                 ad, mr, SLAP_MR_EQUALITY \
 693                                                                 | SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX \
 694                                                                 | SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH \
 695                                                                 | SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH, \
 696                                                                 &(a), &(b), text );
 697
 698 #define IX(x)   ix[x]
 699 #define EXCH(x,y)       SWAP(ix[x],ix[y],itmp)
 700 #define SETA(x) itmp = ix[x]; a = cv[itmp]
 701 #define GETA(x) ix[x] = itmp;
 702 #define SET(x,y)        ix[x] = ix[y]
 703
 704         ad = ml->sml_desc;
 705         nvals = ml->sml_numvals;
 706
 707         /* For Modifications, sml_nvalues is NULL if normalization wasn't needed.
 708          * For Attributes, sml_nvalues == sml_values when normalization isn't needed.
 709          */
 710         if ( ml->sml_nvalues && ml->sml_nvalues != ml->sml_values ) {
 711                 cv = ml->sml_nvalues;
 712                 is_norm = 1;
 713         } else {
 714                 cv = ml->sml_values;
 715                 is_norm = 0;
 716         }
 717
 718         if ( ad == slap_schema.si_ad_objectClass )
 719                 mr = NULL;      /* shortcut matching */
 720         else
 721                 mr = ad->ad_type->sat_equality;
 722
 723         /* record indices to preserve input ordering */
 724         ix = slap_sl_malloc( nvals * sizeof(int), ctx );
 725         for (i=0; i<nvals; i++) ix[i] = i;
 726
 727         ir = nvals-1;
 728         l = 0;
 729         jstack = 0;
 730
 731         for(;;) {
 732                 if (ir - l < SMALL) {   /* Insertion sort */
 733                         match=1;
 734                         for (j=l+1;j<=ir;j++) {
 735                                 SETA(j);
 736                                 for (i=j-1;i>=0;i--) {
 737                                         COMP(cv[IX(i)], a);
 738                                         if ( match <= 0 )
 739                                                 break;
 740                                         SET(i+1,i);
 741                                 }
 742                                 GETA(i+1);
 743                                 if ( match == 0 ) goto done;
 744                         }
 745                         if ( jstack == 0 ) break;
 746                         if ( match == 0 ) break;
 747                         ir = istack[jstack--];
 748                         l = istack[jstack--];
 749                 } else {
 750                         k = (l + ir) >> 1;      /* Choose median of left, center, right */
 751                         EXCH(k, l+1);
 752                         COMP( cv[IX(l)], cv[IX(ir)] );
 753                         if ( match > 0 ) {
 754                                 EXCH(l, ir);
 755                         } else if ( match == 0 ) {
 756                                 i = ir;
 757                                 break;
 758                         }
 759                         COMP( cv[IX(l+1)], cv[IX(ir)] );
 760                         if ( match > 0 ) {
 761                                 EXCH(l+1, ir);
 762                         } else if ( match == 0 ) {
 763                                 i = ir;
 764                                 break;
 765                         }
 766                         COMP( cv[IX(l)], cv[IX(l+1)] );
 767                         if ( match > 0 ) {
 768                                 EXCH(l, l+1);
 769                         } else if ( match == 0 ) {
 770                                 i = l;
 771                                 break;
 772                         }
 773                         i = l+1;
 774                         j = ir;
 775                         a = cv[IX(i)];
 776                         for(;;) {
 777                                 do {
 778                                         i++;
 779                                         COMP( cv[IX(i)], a );
 780                                 } while( match < 0 );
 781                                 while( match > 0 ) {
 782                                         j--;
 783                                         COMP( cv[IX(j)], a );
 784                                 }
 785                                 if (j < i) {
 786                                         match = 1;
 787                                         break;
 788                                 }
 789                                 if ( match == 0 ) {
 790                                         i = l+1;
 791                                         break;
 792                                 }
 793                                 EXCH(i,j);
 794                         }
 795                         if ( match == 0 )
 796                                 break;
 797                         EXCH(l+1,j);
 798                         jstack += 2;
 799                         if (ir-i+1 >= j) {
 800                                 istack[jstack] = ir;
 801                                 istack[jstack-1] = i;
 802                                 ir = j;
 803                         } else {
 804                                 istack[jstack] = j;
 805                                 istack[jstack-1] = l;
 806                                 l = i;
 807                         }
 808                 }
 809         }
 810         done:
 811         if ( match == 0 && i >= 0 )
 812                 *dup = ix[i];
 813
 814         /* For sorted attributes, put the values in index order */
 815         if ( rc == LDAP_SUCCESS && match &&
 816                 ( ad->ad_type->sat_flags & SLAP_AT_SORTED_VAL )) {
 817                 BerVarray tmpv = slap_sl_malloc( sizeof( struct berval ) * nvals, ctx );
 818                 for ( i = 0; i<nvals; i++ )
 819                         tmpv[i] = cv[ix[i]];
 820                 for ( i = 0; i<nvals; i++ )
 821                         cv[i] = tmpv[i];
 822                 /* Check if the non-normalized array needs to move too */
 823                 if ( is_norm ) {
 824                         cv = ml->sml_values;
 825                         for ( i = 0; i<nvals; i++ )
 826                                 tmpv[i] = cv[ix[i]];
 827                         for ( i = 0; i<nvals; i++ )
 828                                 cv[i] = tmpv[i];
 829                 }
 830                 slap_sl_free( tmpv, ctx );
 831         }
 832
 833         slap_sl_free( ix, ctx );
 834
 835         if ( rc != LDAP_SUCCESS ) {
 836                 return rc;
 837         } else if ( match == 0 ) {
 838                 /* value exists already */
 839                 assert( i >= 0 );
 840                 assert( i < nvals );
 841                 return LDAP_TYPE_OR_VALUE_EXISTS;
 842         }
 843         return LDAP_SUCCESS;
 844 }
 845
 846 /* Enter with bv->bv_len = sizeof buffer, returns with
 847  * actual length of string
 848  */
 849 void slap_timestamp( time_t *tm, struct berval *bv )
 850 {
 851         struct tm *ltm;
 852 #ifdef HAVE_GMTIME_R
 853         struct tm ltm_buf;
 854
 855         ltm = gmtime_r( tm, &ltm_buf );
 856 #else
 857         ldap_pvt_thread_mutex_lock( &gmtime_mutex );
 858         ltm = gmtime( tm );
 859 #endif
 860
 861         bv->bv_len = lutil_gentime( bv->bv_val, bv->bv_len, ltm );
 862
 863 #ifndef HAVE_GMTIME_R
 864         ldap_pvt_thread_mutex_unlock( &gmtime_mutex );
 865 #endif
 866 }
 867
 868 /* Called for all modify and modrdn ops. If the current op was replicated
 869  * from elsewhere, all of the attrs should already be present.
 870  */
 871 void slap_mods_opattrs(
 872         Operation *op,
 873         Modifications **modsp,
 874         int manage_ctxcsn )
 875 {
 876         struct berval name, timestamp, csn = BER_BVNULL;
 877         struct berval nname;
 878         char timebuf[ LDAP_LUTIL_GENTIME_BUFSIZE ];
 879         char csnbuf[ LDAP_LUTIL_CSNSTR_BUFSIZE ];
 880         Modifications *mod, **modtail, *modlast;
 881         int gotcsn = 0, gotmname = 0, gotmtime = 0;
 882
 883         if ( SLAP_LASTMOD( op->o_bd ) && !op->orm_no_opattrs ) {
 884                 char *ptr;
 885                 timestamp.bv_val = timebuf;
 886                 for ( modtail = modsp; *modtail; modtail = &(*modtail)->sml_next ) {
 887                         if ( (*modtail)->sml_op != LDAP_MOD_ADD &&
 888                                 (*modtail)->sml_op != SLAP_MOD_SOFTADD &&
 889                                 (*modtail)->sml_op != LDAP_MOD_REPLACE )
 890                         {
 891                                 continue;
 892                         }
 893
 894                         if ( (*modtail)->sml_desc == slap_schema.si_ad_entryCSN )
 895                         {
 896                                 csn = (*modtail)->sml_values[0];
 897                                 gotcsn = 1;
 898
 899                         } else if ( (*modtail)->sml_desc == slap_schema.si_ad_modifiersName )
 900                         {
 901                                 gotmname = 1;
 902
 903                         } else if ( (*modtail)->sml_desc == slap_schema.si_ad_modifyTimestamp )
 904                         {
 905                                 gotmtime = 1;
 906                         }
 907                 }
 908
 909                 if ( BER_BVISEMPTY( &op->o_csn )) {
 910                         if ( !gotcsn ) {
 911                                 csn.bv_val = csnbuf;
 912                                 csn.bv_len = sizeof( csnbuf );
 913                                 slap_get_csn( op, &csn, manage_ctxcsn );
 914
 915                         } else {
 916                                 if ( manage_ctxcsn ) {
 917                                         slap_queue_csn( op, &csn );
 918                                 }
 919                         }
 920
 921                 } else {
 922                         csn = op->o_csn;
 923                 }
 924
 925                 ptr = ber_bvchr( &csn, '#' );
 926                 if ( ptr ) {
 927                         timestamp.bv_len = STRLENOF("YYYYMMDDHHMMSSZ");
 928                         AC_MEMCPY( timebuf, csn.bv_val, timestamp.bv_len );
 929                         timebuf[timestamp.bv_len-1] = 'Z';
 930                         timebuf[timestamp.bv_len] = '\0';
 931
 932                 } else {
 933                         time_t now = slap_get_time();
 934
 935                         timestamp.bv_len = sizeof(timebuf);
 936
 937                         slap_timestamp( &now, &timestamp );
 938                 }
 939
 940                 if ( BER_BVISEMPTY( &op->o_dn ) ) {
 941                         BER_BVSTR( &name, SLAPD_ANONYMOUS );
 942                         nname = name;
 943
 944                 } else {
 945                         name = op->o_dn;
 946                         nname = op->o_ndn;
 947                 }
 948
 949                 if ( !gotcsn ) {
 950                         mod = (Modifications *) ch_malloc( sizeof( Modifications ) );
 951                         mod->sml_op = LDAP_MOD_REPLACE;
 952                         mod->sml_flags = SLAP_MOD_INTERNAL;
 953                         mod->sml_next = NULL;
 954                         BER_BVZERO( &mod->sml_type );
 955                         mod->sml_desc = slap_schema.si_ad_entryCSN;
 956                         mod->sml_numvals = 1;
 957                         mod->sml_values = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
 958                         ber_dupbv( &mod->sml_values[0], &csn );
 959                         BER_BVZERO( &mod->sml_values[1] );
 960                         assert( !BER_BVISNULL( &mod->sml_values[0] ) );
 961                         mod->sml_nvalues = NULL;
 962                         *modtail = mod;
 963                         modlast = mod;
 964                         modtail = &mod->sml_next;
 965                 }
 966
 967                 if ( !gotmname ) {
 968                         mod = (Modifications *) ch_malloc( sizeof( Modifications ) );
 969                         mod->sml_op = LDAP_MOD_REPLACE;
 970                         mod->sml_flags = SLAP_MOD_INTERNAL;
 971                         mod->sml_next = NULL;
 972                         BER_BVZERO( &mod->sml_type );
 973                         mod->sml_desc = slap_schema.si_ad_modifiersName;
 974                         mod->sml_numvals = 1;
 975                         mod->sml_values = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
 976                         ber_dupbv( &mod->sml_values[0], &name );
 977                         BER_BVZERO( &mod->sml_values[1] );
 978                         assert( !BER_BVISNULL( &mod->sml_values[0] ) );
 979                         mod->sml_nvalues =
 980                                 (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
 981                         ber_dupbv( &mod->sml_nvalues[0], &nname );
 982                         BER_BVZERO( &mod->sml_nvalues[1] );
 983                         assert( !BER_BVISNULL( &mod->sml_nvalues[0] ) );
 984                         *modtail = mod;
 985                         modtail = &mod->sml_next;
 986                 }
 987
 988                 if ( !gotmtime ) {
 989                         mod = (Modifications *) ch_malloc( sizeof( Modifications ) );
 990                         mod->sml_op = LDAP_MOD_REPLACE;
 991                         mod->sml_flags = SLAP_MOD_INTERNAL;
 992                         mod->sml_next = NULL;
 993                         BER_BVZERO( &mod->sml_type );
 994                         mod->sml_desc = slap_schema.si_ad_modifyTimestamp;
 995                         mod->sml_numvals = 1;
 996                         mod->sml_values = (BerVarray) ch_malloc( 2 * sizeof( struct berval ) );
 997                         ber_dupbv( &mod->sml_values[0], &timestamp );
 998                         BER_BVZERO( &mod->sml_values[1] );
 999                         assert( !BER_BVISNULL( &mod->sml_values[0] ) );
1000                         mod->sml_nvalues = NULL;
1001                         *modtail = mod;
1002                         modtail = &mod->sml_next;
1003                 }
1004         }
1005 }
1006
1007 int
1008 slap_parse_modlist(
1009         Operation *op,
1010         SlapReply *rs,
1011         BerElement *ber,
1012         req_modify_s *ms )
1013 {
1014         ber_tag_t       tag;
1015         ber_len_t       len;
1016         char            *last;
1017         Modifications   **modtail = &ms->rs_mods.rs_modlist;
1018
1019         ms->rs_mods.rs_modlist = NULL;
1020         ms->rs_increment = 0;
1021
1022         rs->sr_err = LDAP_SUCCESS;
1023
1024         /* collect modifications & save for later */
1025         for ( tag = ber_first_element( ber, &len, &last );
1026                 tag != LBER_DEFAULT;
1027                 tag = ber_next_element( ber, &len, last ) )
1028         {
1029                 ber_int_t mop;
1030                 Modifications tmp, *mod;
1031
1032                 tmp.sml_nvalues = NULL;
1033
1034                 if ( ber_scanf( ber, "{e{m[W]}}", &mop,
1035                     &tmp.sml_type, &tmp.sml_values ) == LBER_ERROR )
1036                 {
1037                         rs->sr_text = "decoding modlist error";
1038                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1039                         goto done;
1040                 }
1041
1042                 mod = (Modifications *) ch_malloc( sizeof(Modifications) );
1043                 mod->sml_op = mop;
1044                 mod->sml_flags = 0;
1045                 mod->sml_type = tmp.sml_type;
1046                 mod->sml_values = tmp.sml_values;
1047                 mod->sml_nvalues = NULL;
1048                 mod->sml_desc = NULL;
1049                 mod->sml_next = NULL;
1050                 *modtail = mod;
1051
1052                 switch( mop ) {
1053                 case LDAP_MOD_ADD:
1054                         if ( mod->sml_values == NULL ) {
1055                                 rs->sr_text = "modify/add operation requires values";
1056                                 rs->sr_err = LDAP_PROTOCOL_ERROR;
1057                                 goto done;
1058                         }
1059
1060                         /* fall through */
1061
1062                 case LDAP_MOD_DELETE:
1063                 case LDAP_MOD_REPLACE:
1064                         break;
1065
1066                 case LDAP_MOD_INCREMENT:
1067                         if( op->o_protocol >= LDAP_VERSION3 ) {
1068                                 ms->rs_increment++;
1069                                 if ( mod->sml_values == NULL ) {
1070                                         rs->sr_text = "modify/increment operation requires value";
1071                                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1072                                         goto done;
1073                                 }
1074
1075                                 if ( !BER_BVISNULL( &mod->sml_values[ 1 ] ) ) {
1076                                         rs->sr_text = "modify/increment operation requires single value";
1077                                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1078                                         goto done;
1079                                 }
1080
1081                                 break;
1082                         }
1083                         /* fall thru */
1084
1085                 default:
1086                         rs->sr_text = "unrecognized modify operation";
1087                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1088                         goto done;
1089                 }
1090
1091                 modtail = &mod->sml_next;
1092         }
1093         *modtail = NULL;
1094
1095 done:
1096         if ( rs->sr_err != LDAP_SUCCESS ) {
1097                 slap_mods_free( ms->rs_mods.rs_modlist, 1 );
1098                 ms->rs_mods.rs_modlist = NULL;
1099                 ms->rs_increment = 0;
1100         }
1101
1102         return rs->sr_err;
1103 }
1104