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

   1 /* limits.c - routines to handle regex-based size and time limits */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2005 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16
  17 #include "portable.h"
  18
  19 #include <stdio.h>
  20
  21 #include <ac/regex.h>
  22 #include <ac/string.h>
  23
  24 #include "slap.h"
  25 #include "lutil.h"
  26
  27 /* define to get an error if requesting limit higher than hard */
  28 #undef ABOVE_HARD_LIMIT_IS_ERROR
  29
  30 static char *
  31 limits2str( unsigned i )
  32 {
  33         switch ( i ) {
  34         case SLAP_LIMITS_UNDEFINED:
  35                 return "UNDEFINED";
  36
  37         case SLAP_LIMITS_EXACT:
  38                 return "EXACT";
  39
  40         case SLAP_LIMITS_ONE:
  41                 return "ONELEVEL";
  42
  43         case SLAP_LIMITS_SUBTREE:
  44                 return "SUBTREE";
  45
  46         case SLAP_LIMITS_CHILDREN:
  47                 return "CHILDREN";
  48
  49         case SLAP_LIMITS_REGEX:
  50                 return "REGEX";
  51
  52         case SLAP_LIMITS_ANONYMOUS:
  53                 return "ANONYMOUS";
  54
  55         case SLAP_LIMITS_USERS:
  56                 return "USERS";
  57
  58         case SLAP_LIMITS_ANY:
  59                 return "ANY";
  60
  61         default:
  62                 return "UNKNOWN";
  63         }
  64 }
  65
  66 int
  67 limits_get(
  68         Operation               *op,
  69         struct berval           *ndn,
  70         struct slap_limits_set  **limit
  71 )
  72 {
  73         struct slap_limits **lm;
  74
  75         assert( op );
  76         assert( limit );
  77
  78         Debug( LDAP_DEBUG_TRACE, "==> limits_get: %s dn=\"%s\"\n",
  79                         op->o_log_prefix,
  80                         BER_BVISNULL( ndn ) ? "[anonymous]" : ndn->bv_val, 0 );
  81         /*
  82          * default values
  83          */
  84         *limit = &op->o_bd->be_def_limit;
  85
  86         if ( op->o_bd->be_limits == NULL ) {
  87                 return( 0 );
  88         }
  89
  90         for ( lm = op->o_bd->be_limits; lm[0] != NULL; lm++ ) {
  91                 unsigned        style = lm[0]->lm_flags & SLAP_LIMITS_MASK;
  92                 unsigned        type = lm[0]->lm_flags & SLAP_LIMITS_TYPE_MASK;
  93
  94                 switch ( style ) {
  95                 case SLAP_LIMITS_EXACT:
  96                         if ( ndn->bv_len == 0 ) {
  97                                 break;
  98                         }
  99
 100                         if ( type == SLAP_LIMITS_TYPE_GROUP ) {
 101                                 int     rc;
 102
 103                                 rc = backend_group( op, NULL,
 104                                                 &lm[0]->lm_pat, ndn,
 105                                                 lm[0]->lm_group_oc,
 106                                                 lm[0]->lm_group_ad );
 107                                 if ( rc == 0 ) {
 108                                         *limit = &lm[0]->lm_limits;
 109                                         Debug( LDAP_DEBUG_TRACE, "<== limits_get: type=GROUP match=EXACT "
 110                                                         "dn=\"%s\" oc=\"%s\" ad=\"%s\"\n",
 111                                                         lm[0]->lm_pat.bv_val,
 112                                                         lm[0]->lm_group_oc->soc_cname.bv_val,
 113                                                         lm[0]->lm_group_ad->ad_cname.bv_val );
 114
 115                                         return( 0 );
 116                                 }
 117                         } else {
 118
 119                                 if ( dn_match( &lm[0]->lm_pat, ndn ) ) {
 120                                         *limit = &lm[0]->lm_limits;
 121                                         Debug( LDAP_DEBUG_TRACE, "<== limits_get: type=DN match=EXACT dn=\"%s\"\n",
 122                                                         lm[0]->lm_pat.bv_val, 0, 0 );
 123                                         return( 0 );
 124                                 }
 125                         }
 126                         break;
 127
 128                 case SLAP_LIMITS_ONE:
 129                 case SLAP_LIMITS_SUBTREE:
 130                 case SLAP_LIMITS_CHILDREN: {
 131                         size_t d;
 132
 133                         if ( ndn->bv_len == 0 ) {
 134                                 break;
 135                         }
 136
 137                         /* ndn shorter than dn_pat */
 138                         if ( ndn->bv_len < lm[0]->lm_pat.bv_len ) {
 139                                 break;
 140                         }
 141                         d = ndn->bv_len - lm[0]->lm_pat.bv_len;
 142
 143                         /* allow exact match for SUBTREE only */
 144                         if ( d == 0 ) {
 145                                 if ( style != SLAP_LIMITS_SUBTREE ) {
 146                                         break;
 147                                 }
 148                         } else {
 149                                 /* check for unescaped rdn separator */
 150                                 if ( !DN_SEPARATOR( ndn->bv_val[d-1] ) ) {
 151                                         break;
 152                                 }
 153                         }
 154
 155                         /* in case of (sub)match ... */
 156                         if ( lm[0]->lm_pat.bv_len == ( ndn->bv_len - d )
 157                                         && strcmp( lm[0]->lm_pat.bv_val,
 158                                                 &ndn->bv_val[d] ) == 0 )
 159                         {
 160                                 /* check for exactly one rdn in case of ONE */
 161                                 if ( style == SLAP_LIMITS_ONE ) {
 162                                         /*
 163                                          * if ndn is more that one rdn
 164                                          * below dn_pat, continue
 165                                          */
 166                                         if ( (size_t) dn_rdnlen( NULL, ndn )
 167                                                         != d - 1 )
 168                                         {
 169                                                 break;
 170                                         }
 171                                 }
 172
 173                                 *limit = &lm[0]->lm_limits;
 174                                 Debug( LDAP_DEBUG_TRACE, "<== limits_get: type=DN match=%s dn=\"%s\"\n",
 175                                                 limits2str( style ), lm[0]->lm_pat.bv_val, 0 );
 176                                 return( 0 );
 177                         }
 178
 179                         break;
 180                 }
 181
 182                 case SLAP_LIMITS_REGEX:
 183                         if ( ndn->bv_len == 0 ) {
 184                                 break;
 185                         }
 186                         if ( regexec( &lm[0]->lm_regex, ndn->bv_val,
 187                                                 0, NULL, 0 ) == 0 )
 188                         {
 189                                 *limit = &lm[0]->lm_limits;
 190                                 Debug( LDAP_DEBUG_TRACE, "<== limits_get: type=DN match=%s dn=\"%s\"\n",
 191                                                 limits2str( style ), lm[0]->lm_pat.bv_val, 0 );
 192                                 return( 0 );
 193                         }
 194                         break;
 195
 196                 case SLAP_LIMITS_ANONYMOUS:
 197                         if ( ndn->bv_len == 0 ) {
 198                                 Debug( LDAP_DEBUG_TRACE, "<== limits_get: type=DN match=%s\n",
 199                                                 limits2str( style ), 0, 0 );
 200                                 *limit = &lm[0]->lm_limits;
 201                                 return( 0 );
 202                         }
 203                         break;
 204
 205                 case SLAP_LIMITS_USERS:
 206                         if ( ndn->bv_len != 0 ) {
 207                                 *limit = &lm[0]->lm_limits;
 208                                 Debug( LDAP_DEBUG_TRACE, "<== limits_get: type=DN match=%s\n",
 209                                                 limits2str( style ), 0, 0 );
 210                                 return( 0 );
 211                         }
 212                         break;
 213
 214                 case SLAP_LIMITS_ANY:
 215                         *limit = &lm[0]->lm_limits;
 216                         return( 0 );
 217
 218                 default:
 219                         assert( 0 );    /* unreachable */
 220                         return( -1 );
 221                 }
 222         }
 223
 224         return( 0 );
 225 }
 226
 227 static int
 228 limits_add(
 229         Backend                 *be,
 230         unsigned                flags,
 231         const char              *pattern,
 232         ObjectClass             *group_oc,
 233         AttributeDescription    *group_ad,
 234         struct slap_limits_set  *limit
 235 )
 236 {
 237         int                     i;
 238         struct slap_limits      *lm;
 239         unsigned                type, style;
 240
 241         assert( be );
 242         assert( limit );
 243
 244         type = flags & SLAP_LIMITS_TYPE_MASK;
 245         style = flags & SLAP_LIMITS_MASK;
 246
 247         switch ( style ) {
 248         case SLAP_LIMITS_ANONYMOUS:
 249         case SLAP_LIMITS_USERS:
 250         case SLAP_LIMITS_ANY:
 251                 for ( i = 0; be->be_limits && be->be_limits[ i ]; i++ ) {
 252                         if ( be->be_limits[ i ]->lm_flags == style ) {
 253                                 return( -1 );
 254                         }
 255                 }
 256                 break;
 257         }
 258
 259
 260         lm = ( struct slap_limits * )ch_calloc( sizeof( struct slap_limits ), 1 );
 261
 262         switch ( style ) {
 263         case SLAP_LIMITS_UNDEFINED:
 264                 style = SLAP_LIMITS_EXACT;
 265                 /* continue to next cases */
 266         case SLAP_LIMITS_EXACT:
 267         case SLAP_LIMITS_ONE:
 268         case SLAP_LIMITS_SUBTREE:
 269         case SLAP_LIMITS_CHILDREN:
 270                 lm->lm_flags = style | type;
 271                 {
 272                         int rc;
 273                         struct berval bv;
 274                         bv.bv_val = (char *) pattern;
 275                         bv.bv_len = strlen( pattern );
 276
 277                         rc = dnNormalize( 0, NULL, NULL, &bv, &lm->lm_pat, NULL );
 278                         if ( rc != LDAP_SUCCESS ) {
 279                                 ch_free( lm );
 280                                 return( -1 );
 281                         }
 282                 }
 283                 break;
 284
 285         case SLAP_LIMITS_REGEX:
 286                 lm->lm_flags = style | type;
 287                 ber_str2bv( pattern, 0, 1, &lm->lm_pat );
 288                 if ( regcomp( &lm->lm_regex, lm->lm_pat.bv_val,
 289                                         REG_EXTENDED | REG_ICASE ) ) {
 290                         free( lm->lm_pat.bv_val );
 291                         ch_free( lm );
 292                         return( -1 );
 293                 }
 294                 break;
 295
 296         case SLAP_LIMITS_ANONYMOUS:
 297         case SLAP_LIMITS_USERS:
 298         case SLAP_LIMITS_ANY:
 299                 lm->lm_flags = style | type;
 300                 lm->lm_pat.bv_val = NULL;
 301                 lm->lm_pat.bv_len = 0;
 302                 break;
 303         }
 304
 305         switch ( type ) {
 306         case SLAP_LIMITS_TYPE_GROUP:
 307                 assert( group_oc );
 308                 assert( group_ad );
 309                 lm->lm_group_oc = group_oc;
 310                 lm->lm_group_ad = group_ad;
 311                 break;
 312         }
 313
 314         lm->lm_limits = *limit;
 315
 316         i = 0;
 317         if ( be->be_limits != NULL ) {
 318                 for ( ; be->be_limits[i]; i++ );
 319         }
 320
 321         be->be_limits = ( struct slap_limits ** )ch_realloc( be->be_limits,
 322                         sizeof( struct slap_limits * ) * ( i + 2 ) );
 323         be->be_limits[i] = lm;
 324         be->be_limits[i+1] = NULL;
 325
 326         return( 0 );
 327 }
 328
 329 int
 330 limits_parse(
 331         Backend     *be,
 332         const char  *fname,
 333         int         lineno,
 334         int         argc,
 335         char        **argv
 336 )
 337 {
 338         int                     flags = SLAP_LIMITS_UNDEFINED;
 339         char                    *pattern;
 340         struct slap_limits_set  limit;
 341         int                     i, rc = 0;
 342         ObjectClass             *group_oc = NULL;
 343         AttributeDescription    *group_ad = NULL;
 344
 345         assert( be );
 346
 347         if ( argc < 3 ) {
 348                 Debug( LDAP_DEBUG_ANY,
 349                         "%s : line %d: missing arg(s) in "
 350                         "\"limits <pattern> <limits>\" line.\n%s",
 351                         fname, lineno, "" );
 352                 return( -1 );
 353         }
 354
 355         limit = be->be_def_limit;
 356
 357         /*
 358          * syntax:
 359          *
 360          * "limits" <pattern> <limit> [ ... ]
 361          *
 362          *
 363          * <pattern>:
 364          *
 365          * "anonymous"
 366          * "users"
 367          * [ "dn" [ "." { "exact" | "base" | "onelevel" | "subtree" | children"
 368          *      | "regex" | "anonymous" } ] "=" ] <dn pattern>
 369          *
 370          * Note:
 371          *      "exact" and "base" are the same (exact match);
 372          *      "onelevel" means exactly one rdn below, NOT including pattern
 373          *      "subtree" means any rdn below, including pattern
 374          *      "children" means any rdn below, NOT including pattern
 375          *
 376          *      "anonymous" may be deprecated in favour
 377          *      of the pattern = "anonymous" form
 378          *
 379          * "group[/objectClass[/attributeType]]" "=" "<dn pattern>"
 380          *
 381          * <limit>:
 382          *
 383          * "time" [ "." { "soft" | "hard" } ] "=" <integer>
 384          *
 385          * "size" [ "." { "soft" | "hard" | "unchecked" } ] "=" <integer>
 386          */
 387
 388         pattern = argv[1];
 389         if ( strcmp( pattern, "*" ) == 0) {
 390                 flags = SLAP_LIMITS_ANY;
 391
 392         } else if ( strcasecmp( pattern, "anonymous" ) == 0 ) {
 393                 flags = SLAP_LIMITS_ANONYMOUS;
 394
 395         } else if ( strcasecmp( pattern, "users" ) == 0 ) {
 396                 flags = SLAP_LIMITS_USERS;
 397
 398         } else if ( strncasecmp( pattern, "dn", STRLENOF( "dn" ) ) == 0 ) {
 399                 pattern += STRLENOF( "dn" );
 400                 if ( pattern[0] == '.' ) {
 401                         pattern++;
 402                         if ( strncasecmp( pattern, "exact", STRLENOF( "exact" )) == 0 ) {
 403                                 flags = SLAP_LIMITS_EXACT;
 404                                 pattern += STRLENOF( "exact" );
 405
 406                         } else if ( strncasecmp( pattern, "base", STRLENOF( "base" ) ) == 0 ) {
 407                                 flags = SLAP_LIMITS_BASE;
 408                                 pattern += STRLENOF( "base" );
 409
 410                         } else if ( strncasecmp( pattern, "one", STRLENOF( "one" ) ) == 0 ) {
 411                                 flags = SLAP_LIMITS_ONE;
 412                                 pattern += STRLENOF( "one" );
 413                                 if ( strncasecmp( pattern, "level", STRLENOF( "level" ) ) == 0 ) {
 414                                         pattern += STRLENOF( "level" );
 415
 416                                 } else {
 417                                         Debug( LDAP_DEBUG_ANY,
 418                                                 "%s : line %d: deprecated \"one\" style "
 419                                                 "\"limits <pattern> <limits>\" line; "
 420                                                 "use \"onelevel\" instead.\n", fname, lineno, 0 );
 421                                 }
 422
 423                         } else if ( strncasecmp( pattern, "sub", STRLENOF( "sub" ) ) == 0 ) {
 424                                 flags = SLAP_LIMITS_SUBTREE;
 425                                 pattern += STRLENOF( "sub" );
 426                                 if ( strncasecmp( pattern, "tree", STRLENOF( "tree" ) ) == 0 ) {
 427                                         pattern += STRLENOF( "tree" );
 428
 429                                 } else {
 430                                         Debug( LDAP_DEBUG_ANY,
 431                                                 "%s : line %d: deprecated \"sub\" style "
 432                                                 "\"limits <pattern> <limits>\" line; "
 433                                                 "use \"subtree\" instead.\n", fname, lineno, 0 );
 434                                 }
 435
 436                         } else if ( strncasecmp( pattern, "children", STRLENOF( "children" ) ) == 0 ) {
 437                                 flags = SLAP_LIMITS_CHILDREN;
 438                                 pattern += STRLENOF( "children" );
 439
 440                         } else if ( strncasecmp( pattern, "regex", STRLENOF( "regex" ) ) == 0 ) {
 441                                 flags = SLAP_LIMITS_REGEX;
 442                                 pattern += STRLENOF( "regex" );
 443
 444                         /*
 445                          * this could be deprecated in favour
 446                          * of the pattern = "anonymous" form
 447                          */
 448                         } else if ( strncasecmp( pattern, "anonymous", STRLENOF( "anonymous" ) ) == 0 ) {
 449                                 flags = SLAP_LIMITS_ANONYMOUS;
 450                                 pattern = NULL;
 451                         }
 452                 }
 453
 454                 /* pre-check the data */
 455                 switch ( flags ) {
 456                 case SLAP_LIMITS_ANONYMOUS:
 457                 case SLAP_LIMITS_USERS:
 458
 459                         /* no need for pattern */
 460                         pattern = NULL;
 461                         break;
 462
 463                 default:
 464                         if ( pattern[0] != '=' ) {
 465                                 Debug( LDAP_DEBUG_ANY,
 466                                         "%s : line %d: missing '=' in "
 467                                         "\"dn[.{exact|base|onelevel|subtree"
 468                                         "|children|regex|anonymous}]"
 469                                         "=<pattern>\" in "
 470                                         "\"limits <pattern> <limits>\" "
 471                                         "line.\n%s",
 472                                         fname, lineno, "" );
 473                                 return( -1 );
 474                         }
 475
 476                         /* skip '=' (required) */
 477                         pattern++;
 478
 479                         /* trim obvious cases */
 480                         if ( strcmp( pattern, "*" ) == 0 ) {
 481                                 flags = SLAP_LIMITS_ANY;
 482                                 pattern = NULL;
 483
 484                         } else if ( flags == SLAP_LIMITS_REGEX
 485                                         && strcmp( pattern, ".*" ) == 0 ) {
 486                                 flags = SLAP_LIMITS_ANY;
 487                                 pattern = NULL;
 488                         }
 489                 }
 490
 491         } else if (strncasecmp( pattern, "group", STRLENOF( "group" ) ) == 0 ) {
 492                 pattern += STRLENOF( "group" );
 493
 494                 if ( pattern[0] == '/' ) {
 495                         struct berval   oc, ad;
 496
 497                         oc.bv_val = pattern + 1;
 498                         pattern = strchr( pattern, '=' );
 499                         if ( pattern == NULL ) {
 500                                 return -1;
 501                         }
 502
 503                         ad.bv_val = strchr( oc.bv_val, '/' );
 504                         if ( ad.bv_val != NULL ) {
 505                                 const char      *text = NULL;
 506                                 int             rc;
 507
 508                                 oc.bv_len = ad.bv_val - oc.bv_val;
 509
 510                                 ad.bv_val++;
 511                                 ad.bv_len = pattern - ad.bv_val;
 512                                 rc = slap_bv2ad( &ad, &group_ad, &text );
 513                                 if ( rc != LDAP_SUCCESS ) {
 514                                         goto no_ad;
 515                                 }
 516
 517                         } else {
 518                                 oc.bv_len = pattern - oc.bv_val;
 519                         }
 520
 521                         group_oc = oc_bvfind( &oc );
 522                         if ( group_oc == NULL ) {
 523                                 goto no_oc;
 524                         }
 525                 }
 526
 527                 if ( group_oc == NULL ) {
 528                         group_oc = oc_find( SLAPD_GROUP_CLASS );
 529                         if ( group_oc == NULL ) {
 530 no_oc:;
 531                                 return( -1 );
 532                         }
 533                 }
 534
 535                 if ( group_ad == NULL ) {
 536                         const char      *text = NULL;
 537                         int             rc;
 538
 539                         rc = slap_str2ad( SLAPD_GROUP_ATTR, &group_ad, &text );
 540
 541                         if ( rc != LDAP_SUCCESS ) {
 542 no_ad:;
 543                                 return( -1 );
 544                         }
 545                 }
 546
 547                 flags = SLAP_LIMITS_TYPE_GROUP | SLAP_LIMITS_EXACT;
 548
 549                 if ( pattern[0] != '=' ) {
 550                         Debug( LDAP_DEBUG_ANY,
 551                                 "%s : line %d: missing '=' in "
 552                                 "\"group[/objectClass[/attributeType]]"
 553                                 "=<pattern>\" in "
 554                                 "\"limits <pattern> <limits>\" line.\n",
 555                                 fname, lineno, 0 );
 556                         return( -1 );
 557                 }
 558
 559                 /* skip '=' (required) */
 560                 pattern++;
 561         }
 562
 563         /* get the limits */
 564         for ( i = 2; i < argc; i++ ) {
 565                 if ( limits_parse_one( argv[i], &limit ) ) {
 566
 567                         Debug( LDAP_DEBUG_ANY,
 568                                 "%s : line %d: unknown limit values \"%s\" in "
 569                                 "\"limits <pattern> <limits>\" line.\n",
 570                         fname, lineno, argv[i] );
 571
 572                         return( 1 );
 573                 }
 574         }
 575
 576         /*
 577          * sanity checks ...
 578          *
 579          * FIXME: add warnings?
 580          */
 581         if ( limit.lms_t_hard > 0 &&
 582                         ( limit.lms_t_hard < limit.lms_t_soft
 583                           || limit.lms_t_soft == -1 ) ) {
 584                 limit.lms_t_hard = limit.lms_t_soft;
 585         }
 586
 587         if ( limit.lms_s_hard > 0 &&
 588                         ( limit.lms_s_hard < limit.lms_s_soft
 589                           || limit.lms_s_soft == -1 ) ) {
 590                 limit.lms_s_hard = limit.lms_s_soft;
 591         }
 592
 593         /*
 594          * defaults ...
 595          *
 596          * lms_t_hard:
 597          *      -1      => no limits
 598          *      0       => same as soft
 599          *      > 0     => limit (in seconds)
 600          *
 601          * lms_s_hard:
 602          *      -1      => no limits
 603          *      0       0> same as soft
 604          *      > 0     => limit (in entries)
 605          *
 606          * lms_s_pr_total:
 607          *      -2      => disable the control
 608          *      -1      => no limits
 609          *      0       => same as soft
 610          *      > 0     => limit (in entries)
 611          *
 612          * lms_s_pr:
 613          *      -1      => no limits
 614          *      0       => no limits?
 615          *      > 0     => limit size (in entries)
 616          */
 617         if ( limit.lms_s_pr_total > 0 &&
 618                         limit.lms_s_pr > limit.lms_s_pr_total ) {
 619                 limit.lms_s_pr = limit.lms_s_pr_total;
 620         }
 621
 622         rc = limits_add( be, flags, pattern, group_oc, group_ad, &limit );
 623         if ( rc ) {
 624
 625                 Debug( LDAP_DEBUG_ANY,
 626                         "%s : line %d: unable to add limit in "
 627                         "\"limits <pattern> <limits>\" line.\n",
 628                 fname, lineno, 0 );
 629         }
 630
 631         return( rc );
 632 }
 633
 634 int
 635 limits_parse_one(
 636         const char              *arg,
 637         struct slap_limits_set  *limit
 638 )
 639 {
 640         assert( arg );
 641         assert( limit );
 642
 643         if ( strncasecmp( arg, "time", STRLENOF( "time" ) ) == 0 ) {
 644                 arg += STRLENOF( "time" );
 645
 646                 if ( arg[0] == '.' ) {
 647                         arg++;
 648                         if ( strncasecmp( arg, "soft=", STRLENOF( "soft=" ) ) == 0 ) {
 649                                 arg += STRLENOF( "soft=" );
 650                                 if ( strcasecmp( arg, "unlimited" ) == 0 || strcasecmp( arg, "none" ) == 0 ) {
 651                                         limit->lms_t_soft = -1;
 652
 653                                 } else {
 654                                         char    *next = NULL;
 655                                         int     soft = strtol( arg, &next, 10 );
 656
 657                                         if ( next == arg || next[ 0 ] != '\0' ) {
 658                                                 return( 1 );
 659                                         }
 660
 661                                         if ( soft < -1 ) {
 662                                                 return( 1 );
 663                                         }
 664
 665                                         if ( soft == -1 ) {
 666                                                 /* FIXME: use "unlimited" instead; issue warning? */
 667                                         }
 668
 669                                         limit->lms_t_soft = soft;
 670                                 }
 671
 672                         } else if ( strncasecmp( arg, "hard=", STRLENOF( "hard=" ) ) == 0 ) {
 673                                 arg += STRLENOF( "hard=" );
 674                                 if ( strcasecmp( arg, "soft" ) == 0 ) {
 675                                         limit->lms_t_hard = 0;
 676
 677                                 } else if ( strcasecmp( arg, "unlimited" ) == 0 || strcasecmp( arg, "none" ) == 0 ) {
 678                                         limit->lms_t_hard = -1;
 679
 680                                 } else {
 681                                         char    *next = NULL;
 682                                         int     hard = strtol( arg, &next, 10 );
 683
 684                                         if ( next == arg || next[ 0 ] != '\0' ) {
 685                                                 return( 1 );
 686                                         }
 687
 688                                         if ( hard < -1 ) {
 689                                                 return( 1 );
 690                                         }
 691
 692                                         if ( hard == -1 ) {
 693                                                 /* FIXME: use "unlimited" instead */
 694                                         }
 695
 696                                         if ( hard == 0 ) {
 697                                                 /* FIXME: use "soft" instead */
 698                                         }
 699
 700                                         limit->lms_t_hard = hard;
 701                                 }
 702
 703                         } else {
 704                                 return( 1 );
 705                         }
 706
 707                 } else if ( arg[0] == '=' ) {
 708                         arg++;
 709                         if ( strcasecmp( arg, "unlimited" ) == 0 || strcasecmp( arg, "none" ) == 0 ) {
 710                                 limit->lms_t_soft = -1;
 711
 712                         } else {
 713                                 char    *next = NULL;
 714
 715                                 limit->lms_t_soft = strtol( arg, &next, 10 );
 716                                 if ( next == arg || limit->lms_t_soft < -1 ) {
 717                                         return( 1 );
 718                                 }
 719                         }
 720                         limit->lms_t_hard = 0;
 721
 722                 } else {
 723                         return( 1 );
 724                 }
 725
 726         } else if ( strncasecmp( arg, "size", STRLENOF( "size" ) ) == 0 ) {
 727                 arg += STRLENOF( "size" );
 728
 729                 if ( arg[0] == '.' ) {
 730                         arg++;
 731                         if ( strncasecmp( arg, "soft=", STRLENOF( "soft=" ) ) == 0 ) {
 732                                 arg += STRLENOF( "soft=" );
 733                                 if ( strcasecmp( arg, "unlimited" ) == 0 || strcasecmp( arg, "none" ) == 0 ) {
 734                                         limit->lms_s_soft = -1;
 735
 736                                 } else {
 737                                         char    *next = NULL;
 738                                         int     soft = strtol( arg, &next, 10 );
 739
 740                                         if ( next == arg || next[ 0 ] != '\0' ) {
 741                                                 return( 1 );
 742                                         }
 743
 744                                         if ( soft < -1 ) {
 745                                                 return( 1 );
 746                                         }
 747
 748                                         if ( soft == -1 ) {
 749                                                 /* FIXME: use "unlimited" instead */
 750                                         }
 751
 752                                         limit->lms_s_soft = soft;
 753                                 }
 754
 755                         } else if ( strncasecmp( arg, "hard=", STRLENOF( "hard=" ) ) == 0 ) {
 756                                 arg += STRLENOF( "hard=" );
 757                                 if ( strcasecmp( arg, "soft" ) == 0 ) {
 758                                         limit->lms_s_hard = 0;
 759
 760                                 } else if ( strcasecmp( arg, "unlimited" ) == 0 || strcasecmp( arg, "none" ) == 0 ) {
 761                                         limit->lms_s_hard = -1;
 762
 763                                 } else {
 764                                         char    *next = NULL;
 765                                         int     hard = strtol( arg, &next, 10 );
 766
 767                                         if ( next == arg || next[ 0 ] != '\0' ) {
 768                                                 return( 1 );
 769                                         }
 770
 771                                         if ( hard < -1 ) {
 772                                                 return( 1 );
 773                                         }
 774
 775                                         if ( hard == -1 ) {
 776                                                 /* FIXME: use "unlimited" instead */
 777                                         }
 778
 779                                         if ( hard == 0 ) {
 780                                                 /* FIXME: use "soft" instead */
 781                                         }
 782
 783                                         limit->lms_s_hard = hard;
 784                                 }
 785
 786                         } else if ( strncasecmp( arg, "unchecked=", STRLENOF( "unchecked=" ) ) == 0 ) {
 787                                 arg += STRLENOF( "unchecked=" );
 788                                 if ( strcasecmp( arg, "unlimited" ) == 0 || strcasecmp( arg, "none" ) == 0 ) {
 789                                         limit->lms_s_unchecked = -1;
 790
 791                                 } else if ( strcasecmp( arg, "disabled" ) == 0 ) {
 792                                         limit->lms_s_unchecked = 0;
 793
 794                                 } else {
 795                                         char    *next = NULL;
 796                                         int     unchecked = strtol( arg, &next, 10 );
 797
 798                                         if ( next == arg || next[ 0 ] != '\0' ) {
 799                                                 return( 1 );
 800                                         }
 801
 802                                         if ( unchecked < -1 ) {
 803                                                 return( 1 );
 804                                         }
 805
 806                                         if ( unchecked == -1 ) {
 807                                                 /*  FIXME: use "unlimited" instead */
 808                                         }
 809
 810                                         limit->lms_s_unchecked = unchecked;
 811                                 }
 812
 813                         } else if ( strncasecmp( arg, "pr=", STRLENOF( "pr=" ) ) == 0 ) {
 814                                 arg += STRLENOF( "pr=" );
 815                                 if ( strcasecmp( arg, "noEstimate" ) == 0 ) {
 816                                         limit->lms_s_pr_hide = 1;
 817
 818                                 } else if ( strcasecmp( arg, "unlimited" ) == 0 || strcasecmp( arg, "none" ) == 0 ) {
 819                                         limit->lms_s_pr = -1;
 820
 821                                 } else {
 822                                         char    *next = NULL;
 823                                         int     pr = strtol( arg, &next, 10 );
 824
 825                                         if ( next == arg || next[ 0 ] != '\0' ) {
 826                                                 return( 1 );
 827                                         }
 828
 829                                         if ( pr < -1 ) {
 830                                                 return( 1 );
 831                                         }
 832
 833                                         if ( pr == -1 ) {
 834                                                 /* FIXME: use "unlimited" instead */
 835                                         }
 836
 837                                         limit->lms_s_pr = pr;
 838                                 }
 839
 840                         } else if ( strncasecmp( arg, "prtotal=", STRLENOF( "prtotal=" ) ) == 0 ) {
 841                                 arg += STRLENOF( "prtotal=" );
 842
 843                                 if ( strcasecmp( arg, "unlimited" ) == 0 || strcasecmp( arg, "none" ) == 0 ) {
 844                                         limit->lms_s_pr_total = -1;
 845
 846                                 } else if ( strcasecmp( arg, "disabled" ) == 0 ) {
 847                                         limit->lms_s_pr_total = -2;
 848
 849                                 } else if ( strcasecmp( arg, "hard" ) == 0 ) {
 850                                         limit->lms_s_pr_total = 0;
 851
 852                                 } else {
 853                                         char    *next = NULL;
 854                                         int     total;
 855
 856                                         total = strtol( arg, &next, 10 );
 857                                         if ( next == arg || next[ 0 ] != '\0' ) {
 858                                                 return( 1 );
 859                                         }
 860
 861                                         if ( total < -1 ) {
 862                                                 return( 1 );
 863                                         }
 864
 865                                         if ( total == -1 ) {
 866                                                 /* FIXME: use "unlimited" instead */
 867                                         }
 868
 869                                         if ( total == 0 ) {
 870                                                 /* FIXME: use "pr=disable" instead */
 871                                         }
 872
 873                                         limit->lms_s_pr_total = total;
 874                                 }
 875
 876                         } else {
 877                                 return( 1 );
 878                         }
 879
 880                 } else if ( arg[0] == '=' ) {
 881                         arg++;
 882                         if ( strcasecmp( arg, "unlimited" ) == 0 || strcasecmp( arg, "none" ) == 0 ) {
 883                                 limit->lms_s_soft = -1;
 884
 885                         } else {
 886                                 char    *next = NULL;
 887
 888                                 limit->lms_s_soft = strtol( arg, &next, 10 );
 889                                 if ( next == arg || limit->lms_s_soft < -1 ) {
 890                                         return( 1 );
 891                                 }
 892                         }
 893                         limit->lms_s_hard = 0;
 894
 895                 } else {
 896                         return( 1 );
 897                 }
 898         }
 899
 900         return 0;
 901 }
 902
 903 static const char *lmpats[] = {
 904         "exact",
 905         "exact",
 906         "onelvel",
 907         "subtree",
 908         "children",
 909         "regex",
 910         "anonymous",
 911         "users",
 912         "*"
 913 };
 914
 915 /* Caller must provide an adequately sized buffer in bv */
 916 void
 917 limits_unparse( struct slap_limits *lim, struct berval *bv )
 918 {
 919         struct berval btmp;
 920         char *ptr;
 921         int lm;
 922
 923         if ( !bv || !bv->bv_val ) return;
 924
 925         ptr = bv->bv_val;
 926
 927         if (( lim->lm_flags & SLAP_LIMITS_TYPE_MASK ) == SLAP_LIMITS_TYPE_GROUP ) {
 928                 ptr = lutil_strcopy( ptr, "group/" );
 929                 ptr = lutil_strcopy( ptr, lim->lm_group_oc->soc_cname.bv_val );
 930                 *ptr++ = '/';
 931                 ptr = lutil_strcopy( ptr, lim->lm_group_ad->ad_cname.bv_val );
 932         } else {
 933                 lm = lim->lm_flags & SLAP_LIMITS_MASK;
 934                 switch( lm ) {
 935                 case SLAP_LIMITS_ANONYMOUS:
 936                 case SLAP_LIMITS_USERS:
 937                 case SLAP_LIMITS_ANY:
 938                         ptr = lutil_strcopy( ptr, lmpats[lm] );
 939                         break;
 940                 case SLAP_LIMITS_UNDEFINED:
 941                 case SLAP_LIMITS_EXACT:
 942                 case SLAP_LIMITS_ONE:
 943                 case SLAP_LIMITS_SUBTREE:
 944                 case SLAP_LIMITS_CHILDREN:
 945                 case SLAP_LIMITS_REGEX:
 946                         ptr = lutil_strcopy( ptr, "dn." );
 947                         ptr = lutil_strcopy( ptr, lmpats[lm] );
 948                         *ptr++ = '=';
 949                         *ptr++ = '"';
 950                         ptr = lutil_strcopy( ptr, lim->lm_pat.bv_val );
 951                         *ptr++ = '"';
 952                         break;
 953                 }
 954         }
 955         *ptr++ = ' ';
 956         bv->bv_len = ptr - bv->bv_val;
 957         btmp.bv_val = ptr;
 958         btmp.bv_len = 0;
 959         limits_unparse_one( &lim->lm_limits, SLAP_LIMIT_SIZE|SLAP_LIMIT_TIME, &btmp );
 960         bv->bv_len += btmp.bv_len;
 961 }
 962
 963 /* Caller must provide an adequately sized buffer in bv */
 964 void
 965 limits_unparse_one( struct slap_limits_set *lim, int which, struct berval *bv )
 966 {
 967         char *ptr;
 968
 969         if ( !bv || !bv->bv_val ) return;
 970
 971         ptr = bv->bv_val;
 972
 973         if ( which & SLAP_LIMIT_SIZE ) {
 974                 if ( lim->lms_s_soft != SLAPD_DEFAULT_SIZELIMIT ) {
 975
 976                         /* If there's also a hard limit, fully qualify this one */
 977                         if ( lim->lms_s_hard )
 978                                 ptr = lutil_strcopy( ptr, " size.soft=" );
 979
 980                         /* If doing both size & time, qualify this */
 981                         else if ( which & SLAP_LIMIT_TIME )
 982                                 ptr = lutil_strcopy( ptr, " size=" );
 983
 984                         /* Otherwise if same as global limit, drop it */
 985                         else if ( lim != &frontendDB->be_def_limit &&
 986                                 lim->lms_s_soft == frontendDB->be_def_limit.lms_s_soft )
 987                                 return;
 988                         if ( lim->lms_s_soft == -1 )
 989                                 ptr = lutil_strcopy( ptr, "unlimited" );
 990                         else
 991                                 ptr += sprintf( ptr, "%d", lim->lms_s_soft );
 992                         *ptr++ = ' ';
 993                 }
 994                 if ( lim->lms_s_hard ) {
 995                         ptr = lutil_strcopy( ptr, " size.hard=" );
 996                         if ( lim->lms_s_hard == -1 )
 997                                 ptr = lutil_strcopy( ptr, "unlimited" );
 998                         else
 999                                 ptr += sprintf( ptr, "%d", lim->lms_s_hard );
1000                         *ptr++ = ' ';
1001                 }
1002                 if ( lim->lms_s_unchecked != -1 ) {
1003                         ptr = lutil_strcopy( ptr, " size.unchecked=" );
1004                         if ( lim->lms_s_unchecked == 0 )
1005                                 ptr = lutil_strcopy( ptr, "disabled" );
1006                         else
1007                                 ptr += sprintf( ptr, "%d", lim->lms_s_unchecked );
1008                         *ptr++ = ' ';
1009                 }
1010                 if ( lim->lms_s_pr_hide ) {
1011                         ptr = lutil_strcopy( ptr, " size.pr=noEstimate " );
1012                 }
1013                 if ( lim->lms_s_pr ) {
1014                         ptr = lutil_strcopy( ptr, " size.pr=" );
1015                         if ( lim->lms_s_pr == -1 )
1016                                 ptr = lutil_strcopy( ptr, "unlimited" );
1017                         else
1018                                 ptr += sprintf( ptr, "%d", lim->lms_s_pr );
1019                         *ptr++ = ' ';
1020                 }
1021                 if ( lim->lms_s_pr_total ) {
1022                         ptr = lutil_strcopy( ptr, " size.prtotal=" );
1023                         if ( lim->lms_s_pr_total == -1 )
1024                                 ptr = lutil_strcopy( ptr, "unlimited" );
1025                         else if ( lim->lms_s_pr_total == -2 )
1026                                 ptr = lutil_strcopy( ptr, "disabled" );
1027                         else
1028                                 ptr += sprintf( ptr, "%d", lim->lms_s_pr_total );
1029                         *ptr++ = ' ';
1030                 }
1031         }
1032         if ( which & SLAP_LIMIT_TIME ) {
1033                 if ( lim->lms_t_soft != SLAPD_DEFAULT_TIMELIMIT ) {
1034
1035                         /* If there's also a hard limit, fully qualify this one */
1036                         if ( lim->lms_t_hard )
1037                                 ptr = lutil_strcopy( ptr, " time.soft=" );
1038
1039                         /* If doing both size & time, qualify this */
1040                         else if ( which & SLAP_LIMIT_SIZE )
1041                                 ptr = lutil_strcopy( ptr, " time=" );
1042
1043                         /* Otherwise, if same as global limit, drop it */
1044                         else if ( lim != &frontendDB->be_def_limit &&
1045                                 lim->lms_t_soft == frontendDB->be_def_limit.lms_t_soft )
1046                                 return;
1047
1048                         if ( lim->lms_t_soft == -1 )
1049                                 ptr = lutil_strcopy( ptr, "unlimited" );
1050                         else
1051                                 ptr += sprintf( ptr, "%d", lim->lms_t_soft );
1052                         *ptr++ = ' ';
1053                 }
1054                 if ( lim->lms_t_hard ) {
1055                         ptr = lutil_strcopy( ptr, " time.hard=" );
1056                         if ( lim->lms_t_hard == -1 )
1057                                 ptr = lutil_strcopy( ptr, "unlimited" );
1058                         else
1059                                 ptr += sprintf( ptr, "%d", lim->lms_t_hard );
1060                         *ptr++ = ' ';
1061                 }
1062         }
1063         if ( ptr != bv->bv_val ) {
1064                 ptr--;
1065                 *ptr = '\0';
1066                 bv->bv_len = ptr - bv->bv_val;
1067         }
1068 }
1069
1070 int
1071 limits_check( Operation *op, SlapReply *rs )
1072 {
1073         assert( op );
1074         assert( rs );
1075         /* FIXME: should this be always true? */
1076         assert( op->o_tag == LDAP_REQ_SEARCH);
1077
1078         /* protocol only allows 0..maxInt;
1079          *
1080          * internal searches:
1081          * - may use SLAP_NO_LIMIT ( = -1 ) to indicate no limits;
1082          * - should use slimit = N and tlimit = SLAP_NO_LIMIT to
1083          *   indicate searches that should return exactly N matches,
1084          *   and handle errors thru a callback (see for instance
1085          *   slap_sasl_match() and slap_sasl2dn())
1086          */
1087         if ( op->ors_tlimit == SLAP_NO_LIMIT && op->ors_slimit == SLAP_NO_LIMIT ) {
1088                 return 0;
1089         }
1090
1091         /* allow root to set no limit */
1092         if ( be_isroot( op ) ) {
1093                 op->ors_limit = NULL;
1094
1095                 if ( op->ors_tlimit == 0 ) {
1096                         op->ors_tlimit = SLAP_NO_LIMIT;
1097                 }
1098
1099                 if ( op->ors_slimit == 0 ) {
1100                         op->ors_slimit = SLAP_NO_LIMIT;
1101                 }
1102
1103         /* if not root, get appropriate limits */
1104         } else {
1105                 ( void ) limits_get( op, &op->o_ndn, &op->ors_limit );
1106
1107                 assert( op->ors_limit != NULL );
1108
1109                 /* if no limit is required, use soft limit */
1110                 if ( op->ors_tlimit == 0 ) {
1111                         op->ors_tlimit = op->ors_limit->lms_t_soft;
1112
1113                 /* limit required: check if legal */
1114                 } else {
1115                         if ( op->ors_limit->lms_t_hard == 0 ) {
1116                                 if ( op->ors_limit->lms_t_soft > 0
1117                                                 && ( op->ors_tlimit > op->ors_limit->lms_t_soft ) ) {
1118                                         op->ors_tlimit = op->ors_limit->lms_t_soft;
1119                                 }
1120
1121                         } else if ( op->ors_limit->lms_t_hard > 0 ) {
1122 #ifdef ABOVE_HARD_LIMIT_IS_ERROR
1123                                 if ( op->ors_tlimit == SLAP_MAX_LIMIT ) {
1124                                         op->ors_tlimit = op->ors_limit->lms_t_hard;
1125
1126                                 } else if ( op->ors_tlimit > op->ors_limit->lms_t_hard ) {
1127                                         /* error if exceeding hard limit */
1128                                         rs->sr_err = LDAP_ADMINLIMIT_EXCEEDED;
1129                                         send_ldap_result( op, rs );
1130                                         rs->sr_err = LDAP_SUCCESS;
1131                                         return -1;
1132                                 }
1133 #else /* ! ABOVE_HARD_LIMIT_IS_ERROR */
1134                                 if ( op->ors_tlimit > op->ors_limit->lms_t_hard ) {
1135                                         op->ors_tlimit = op->ors_limit->lms_t_hard;
1136                                 }
1137 #endif /* ! ABOVE_HARD_LIMIT_IS_ERROR */
1138                         }
1139                 }
1140
1141                 /* else leave as is */
1142
1143                 /* don't even get to backend if candidate check is disabled */
1144                 if ( op->ors_limit->lms_s_unchecked == 0 ) {
1145                         rs->sr_err = LDAP_ADMINLIMIT_EXCEEDED;
1146                         send_ldap_result( op, rs );
1147                         rs->sr_err = LDAP_SUCCESS;
1148                         return -1;
1149                 }
1150
1151                 /* if paged results is requested */
1152                 if ( get_pagedresults( op ) > SLAP_CONTROL_IGNORED ) {
1153                         int     slimit = -2;
1154                         int     pr_total;
1155                         PagedResultsState *ps = op->o_pagedresults_state;
1156
1157                         /* paged results is not allowed */
1158                         if ( op->ors_limit->lms_s_pr_total == -2 ) {
1159                                 rs->sr_err = LDAP_ADMINLIMIT_EXCEEDED;
1160                                 rs->sr_text = "pagedResults control not allowed";
1161                                 send_ldap_result( op, rs );
1162                                 rs->sr_err = LDAP_SUCCESS;
1163                                 rs->sr_text = NULL;
1164                                 return -1;
1165                         }
1166
1167                         if ( op->ors_limit->lms_s_pr > 0 && ps->ps_size > op->ors_limit->lms_s_pr ) {
1168                                 rs->sr_err = LDAP_ADMINLIMIT_EXCEEDED;
1169                                 rs->sr_text = "illegal pagedResults page size";
1170                                 send_ldap_result( op, rs );
1171                                 rs->sr_err = LDAP_SUCCESS;
1172                                 rs->sr_text = NULL;
1173                                 return -1;
1174                         }
1175
1176                         if ( op->ors_limit->lms_s_pr_total == 0 ) {
1177                                 if ( op->ors_limit->lms_s_hard == 0 ) {
1178                                         pr_total = op->ors_limit->lms_s_soft;
1179                                 } else {
1180                                         pr_total = op->ors_limit->lms_s_hard;
1181                                 }
1182                         } else {
1183                                 pr_total = op->ors_limit->lms_s_pr_total;
1184                         }
1185
1186                         if ( pr_total == -1 ) {
1187                                 if ( op->ors_slimit == 0 || op->ors_slimit == SLAP_MAX_LIMIT ) {
1188                                         slimit = -1;
1189
1190                                 } else {
1191                                         slimit = op->ors_slimit - ps->ps_count;
1192                                 }
1193
1194 #ifdef ABOVE_HARD_LIMIT_IS_ERROR
1195                         } else if ( pr_total > 0 && op->ors_slimit != SLAP_MAX_LIMIT
1196                                         && ( op->ors_slimit == SLAP_NO_LIMIT || op->ors_slimit > pr_total ) )
1197                         {
1198                                 rs->sr_err = LDAP_ADMINLIMIT_EXCEEDED;
1199                                 send_ldap_result( op, rs );
1200                                 rs->sr_err = LDAP_SUCCESS;
1201                                 return -1;
1202 #endif /* ! ABOVE_HARD_LIMIT_IS_ERROR */
1203
1204                         } else {
1205                                 /* if no limit is required, use soft limit */
1206                                 int     total;
1207                                 int     slimit2;
1208
1209                                 /* first round of pagedResults: set count to any appropriate limit */
1210
1211                                 /* if the limit is set, check that it does not violate any server-side limit */
1212 #ifdef ABOVE_HARD_LIMIT_IS_ERROR
1213                                 if ( op->ors_slimit == SLAP_MAX_LIMIT ) {
1214                                         slimit2 = op->ors_slimit = pr_total;
1215 #else /* ! ABOVE_HARD_LIMIT_IS_ERROR */
1216                                 if ( op->ors_slimit == SLAP_MAX_LIMIT || op->ors_slimit > pr_total ) {
1217                                         slimit2 = op->ors_slimit = pr_total;
1218 #endif /* ! ABOVE_HARD_LIMIT_IS_ERROR */
1219
1220                                 } else if ( op->ors_slimit == 0 ) {
1221                                         slimit2 = pr_total;
1222
1223                                 } else {
1224                                         slimit2 = op->ors_slimit;
1225                                 }
1226
1227                                 total = slimit2 - ps->ps_count;
1228
1229                                 if ( total >= 0 ) {
1230                                         if ( op->ors_limit->lms_s_pr > 0 ) {
1231                                                 /* use the smallest limit set by total/per page */
1232                                                 if ( total < op->ors_limit->lms_s_pr ) {
1233                                                         slimit = total;
1234
1235                                                 } else {
1236                                                         /* use the perpage limit if any
1237                                                          * NOTE: + 1 because the given value must be legal */
1238                                                         slimit = op->ors_limit->lms_s_pr + 1;
1239                                                 }
1240
1241                                         } else {
1242                                                 /* use the total limit if any */
1243                                                 slimit = total;
1244                                         }
1245
1246                                 } else if ( op->ors_limit->lms_s_pr > 0 ) {
1247                                         /* use the perpage limit if any
1248                                          * NOTE: + 1 because the given value must be legal */
1249                                         slimit = op->ors_limit->lms_s_pr + 1;
1250
1251                                 } else {
1252                                         /* use the standard hard/soft limit if any */
1253                                         slimit = op->ors_limit->lms_s_hard;
1254                                 }
1255                         }
1256
1257                         /* if got any limit, use it */
1258                         if ( slimit != -2 ) {
1259                                 if ( op->ors_slimit == 0 ) {
1260                                         op->ors_slimit = slimit;
1261
1262                                 } else if ( slimit > 0 ) {
1263                                         if ( op->ors_slimit - ps->ps_count > slimit ) {
1264                                                 rs->sr_err = LDAP_ADMINLIMIT_EXCEEDED;
1265                                                 send_ldap_result( op, rs );
1266                                                 rs->sr_err = LDAP_SUCCESS;
1267                                                 return -1;
1268                                         }
1269                                         op->ors_slimit = slimit;
1270                                 }
1271
1272                         } else {
1273                                 /* use the standard hard/soft limit if any */
1274                                 op->ors_slimit = pr_total;
1275                         }
1276
1277                 /* no limit requested: use soft, whatever it is */
1278                 } else if ( op->ors_slimit == 0 ) {
1279                         op->ors_slimit = op->ors_limit->lms_s_soft;
1280
1281                 /* limit requested: check if legal */
1282                 } else {
1283                         /* hard limit as soft (traditional behavior) */
1284                         if ( op->ors_limit->lms_s_hard == 0 ) {
1285                                 if ( op->ors_limit->lms_s_soft > 0
1286                                                 && op->ors_slimit > op->ors_limit->lms_s_soft ) {
1287                                         op->ors_slimit = op->ors_limit->lms_s_soft;
1288                                 }
1289
1290                         /* explicit hard limit: error if violated */
1291                         } else if ( op->ors_limit->lms_s_hard > 0 ) {
1292 #ifdef ABOVE_HARD_LIMIT_IS_ERROR
1293                                 if ( op->ors_slimit == SLAP_MAX_LIMIT ) {
1294                                         op->ors_slimit = op->ors_limit->lms_s_hard;
1295
1296                                 } else if ( op->ors_slimit > op->ors_limit->lms_s_hard ) {
1297                                         /* if limit exceeds hard, error */
1298                                         rs->sr_err = LDAP_ADMINLIMIT_EXCEEDED;
1299                                         send_ldap_result( op, rs );
1300                                         rs->sr_err = LDAP_SUCCESS;
1301                                         return -1;
1302                                 }
1303 #else /* ! ABOVE_HARD_LIMIT_IS_ERROR */
1304                                 if ( op->ors_slimit > op->ors_limit->lms_s_hard ) {
1305                                         op->ors_slimit = op->ors_limit->lms_s_hard;
1306                                 }
1307 #endif /* ! ABOVE_HARD_LIMIT_IS_ERROR */
1308                         }
1309                 }
1310
1311                 /* else leave as is */
1312         }
1313
1314         return 0;
1315 }
1316