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

   1 /* acl.c - routines to parse and check acl's */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
   5  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   6  */
   7
   8 #include "portable.h"
   9
  10 #include <stdio.h>
  11
  12 #include <ac/regex.h>
  13 #include <ac/socket.h>
  14 #include <ac/string.h>
  15
  16 #include "slap.h"
  17 #include "sets.h"
  18 #include "lber_pvt.h"
  19
  20 #define ACL_BUF_SIZE    1024    /* use most appropriate size */
  21
  22 /*
  23  * speed up compares
  24  */
  25 static struct berval
  26         aci_bv_entry            = BER_BVC("entry"),
  27         aci_bv_br_entry         = BER_BVC("[entry]"),
  28         aci_bv_br_all           = BER_BVC("[all]"),
  29         aci_bv_access_id        = BER_BVC("access-id"),
  30         aci_bv_anonymous        = BER_BVC("anonymous"),
  31         aci_bv_public           = BER_BVC("public"),
  32         aci_bv_users            = BER_BVC("users"),
  33         aci_bv_self             = BER_BVC("self"),
  34         aci_bv_dnattr           = BER_BVC("dnattr"),
  35         aci_bv_group            = BER_BVC("group"),
  36         aci_bv_role             = BER_BVC("role"),
  37         aci_bv_set              = BER_BVC("set"),
  38         aci_bv_set_ref          = BER_BVC("set-ref"),
  39         aci_bv_grant            = BER_BVC("grant"),
  40         aci_bv_deny             = BER_BVC("deny"),
  41
  42         aci_bv_group_class      = BER_BVC(SLAPD_GROUP_CLASS),
  43         aci_bv_group_attr       = BER_BVC(SLAPD_GROUP_ATTR),
  44         aci_bv_role_class       = BER_BVC(SLAPD_ROLE_CLASS),
  45         aci_bv_role_attr        = BER_BVC(SLAPD_ROLE_ATTR);
  46
  47
  48 static AccessControl * acl_get(
  49         AccessControl *ac, int *count,
  50         Backend *be, Operation *op,
  51         Entry *e,
  52         AttributeDescription *desc,
  53         int nmatches, regmatch_t *matches );
  54
  55 static slap_control_t acl_mask(
  56         AccessControl *ac, slap_mask_t *mask,
  57         Backend *be, Connection *conn, Operation *op,
  58         Entry *e,
  59         AttributeDescription *desc,
  60         struct berval *val,
  61         regmatch_t *matches,
  62         int count,
  63         AccessControlState *state );
  64
  65 #ifdef SLAPD_ACI_ENABLED
  66 static int aci_mask(
  67         Backend *be,
  68     Connection *conn,
  69         Operation *op,
  70         Entry *e,
  71         AttributeDescription *desc,
  72         struct berval *val,
  73         struct berval *aci,
  74         regmatch_t *matches,
  75         slap_access_t *grant,
  76         slap_access_t *deny );
  77 #endif
  78
  79 static int      regex_matches(
  80         struct berval *pat, char *str, char *buf, regmatch_t *matches);
  81 static void     string_expand(
  82         struct berval *newbuf, struct berval *pattern,
  83         char *match, regmatch_t *matches);
  84
  85 typedef struct AciSetCookie {
  86         Backend *be;
  87         Entry *e;
  88         Connection *conn;
  89         Operation *op;
  90 } AciSetCookie;
  91
  92 SLAP_SET_GATHER aci_set_gather;
  93 static int aci_match_set ( struct berval *subj, Backend *be,
  94     Entry *e, Connection *conn, Operation *op, int setref );
  95
  96 /*
  97  * access_allowed - check whether op->o_ndn is allowed the requested access
  98  * to entry e, attribute attr, value val.  if val is null, access to
  99  * the whole attribute is assumed (all values).
 100  *
 101  * This routine loops through all access controls and calls
 102  * acl_mask() on each applicable access control.
 103  * The loop exits when a definitive answer is reached or
 104  * or no more controls remain.
 105  *
 106  * returns:
 107  *              0       access denied
 108  *              1       access granted
 109  */
 110
 111 int
 112 access_allowed(
 113     Backend             *be,
 114     Connection          *conn,
 115     Operation           *op,
 116     Entry               *e,
 117         AttributeDescription    *desc,
 118     struct berval       *val,
 119     slap_access_t       access,
 120         AccessControlState *state )
 121 {
 122         int                             ret = 1;
 123         int                             count;
 124         AccessControl   *a;
 125
 126 #ifdef LDAP_DEBUG
 127         char accessmaskbuf[ACCESSMASK_MAXLEN];
 128 #endif
 129         slap_mask_t mask;
 130         slap_control_t control;
 131         const char *attr;
 132         regmatch_t matches[MAXREMATCHES];
 133
 134         assert( e != NULL );
 135         assert( desc != NULL );
 136         assert( access > ACL_NONE );
 137
 138         attr = desc->ad_cname.bv_val;
 139
 140         assert( attr != NULL );
 141
 142         if( state && state->as_recorded ) {
 143                 if( state->as_recorded & ACL_STATE_RECORDED_NV &&
 144                         val == NULL )
 145                 {
 146                         return state->as_result;
 147
 148                 } else if ( state->as_recorded & ACL_STATE_RECORDED_VD &&
 149                         val != NULL && state->as_vd_acl == NULL )
 150                 {
 151                         return state->as_result;
 152                 }
 153         }
 154
 155 #ifdef NEW_LOGGING
 156         LDAP_LOG( ACL, ENTRY,
 157                 "access_allowed: %s access to \"%s\" \"%s\" requested\n",
 158                 access2str( access ), e->e_dn, attr );
 159 #else
 160         Debug( LDAP_DEBUG_ACL,
 161                 "=> access_allowed: %s access to \"%s\" \"%s\" requested\n",
 162             access2str( access ), e->e_dn, attr );
 163 #endif
 164
 165         if ( op == NULL ) {
 166                 /* no-op call */
 167                 goto done;
 168         }
 169
 170         if ( be == NULL ) be = &backends[0];
 171         assert( be != NULL );
 172
 173         /* grant database root access */
 174         if ( be != NULL && be_isroot( be, &op->o_ndn ) ) {
 175 #ifdef NEW_LOGGING
 176                 LDAP_LOG( ACL, INFO,
 177                         "access_allowed: conn %lu root access granted\n",
 178                         conn->c_connid, 0, 0 );
 179 #else
 180                 Debug( LDAP_DEBUG_ACL,
 181                     "<= root access granted\n",
 182                         0, 0, 0 );
 183 #endif
 184                 goto done;
 185         }
 186
 187         /*
 188          * no-user-modification operational attributes are ignored
 189          * by ACL_WRITE checking as any found here are not provided
 190          * by the user
 191          */
 192         if ( access >= ACL_WRITE && is_at_no_user_mod( desc->ad_type )
 193                 && desc != slap_schema.si_ad_entry
 194                 && desc != slap_schema.si_ad_children )
 195         {
 196 #ifdef NEW_LOGGING
 197                 LDAP_LOG( ACL, DETAIL1,
 198                         "access_allowed: conn %lu NoUserMod Operational attribute: %s "
 199                         "access granted\n", conn->c_connid, attr , 0 );
 200 #else
 201                 Debug( LDAP_DEBUG_ACL, "NoUserMod Operational attribute:"
 202                         " %s access granted\n",
 203                         attr, 0, 0 );
 204 #endif
 205                 goto done;
 206         }
 207
 208         /* use backend default access if no backend acls */
 209         if( be != NULL && be->be_acl == NULL ) {
 210 #ifdef NEW_LOGGING
 211                 LDAP_LOG( ACL, DETAIL1,
 212                         "access_allowed: backend default %s access %s to \"%s\"\n",
 213                     access2str( access ),
 214                     be->be_dfltaccess >= access ? "granted" : "denied",
 215                         op->o_dn.bv_val );
 216 #else
 217                 Debug( LDAP_DEBUG_ACL,
 218                         "=> access_allowed: backend default %s access %s to \"%s\"\n",
 219                         access2str( access ),
 220                         be->be_dfltaccess >= access ? "granted" : "denied", op->o_dn.bv_val );
 221 #endif
 222                 ret = be->be_dfltaccess >= access;
 223                 goto done;
 224
 225 #ifdef notdef
 226         /* be is always non-NULL */
 227         /* use global default access if no global acls */
 228         } else if ( be == NULL && global_acl == NULL ) {
 229 #ifdef NEW_LOGGING
 230                 LDAP_LOG( ACL, DETAIL1,
 231                         "access_allowed: global default %s access %s to \"%s\"\n",
 232                     access2str( access ),
 233                     global_default_access >= access ? "granted" : "denied",
 234                         op->o_dn.bv_val );
 235 #else
 236                 Debug( LDAP_DEBUG_ACL,
 237                         "=> access_allowed: global default %s access %s to \"%s\"\n",
 238                         access2str( access ),
 239                         global_default_access >= access ? "granted" : "denied", op->o_dn.bv_val );
 240 #endif
 241                 ret = global_default_access >= access;
 242                 goto done;
 243 #endif
 244         }
 245
 246         ret = 0;
 247         control = ACL_BREAK;
 248
 249         if( state && ( state->as_recorded & ACL_STATE_RECORDED_VD )) {
 250                 assert( state->as_vd_acl != NULL );
 251
 252                 a = state->as_vd_acl;
 253                 mask = state->as_vd_acl_mask;
 254                 count = state->as_vd_acl_count;
 255                 AC_MEMCPY( matches, state->as_vd_acl_matches,
 256                         sizeof(matches) );
 257                 goto vd_access;
 258
 259         } else {
 260                 a = NULL;
 261                 ACL_INIT(mask);
 262                 count = 0;
 263                 memset(matches, '\0', sizeof(matches));
 264         }
 265
 266         while((a = acl_get( a, &count, be, op, e, desc,
 267                 MAXREMATCHES, matches )) != NULL)
 268         {
 269                 int i;
 270
 271                 for (i = 0; i < MAXREMATCHES && matches[i].rm_so > 0; i++) {
 272 #ifdef NEW_LOGGING
 273                         LDAP_LOG( ACL, DETAIL1,
 274                                 "access_allowed: match[%d]:  %d %d ",
 275                             i, (int)matches[i].rm_so, (int)matches[i].rm_eo );
 276 #else
 277                         Debug( LDAP_DEBUG_ACL, "=> match[%d]: %d %d ", i,
 278                             (int)matches[i].rm_so, (int)matches[i].rm_eo );
 279 #endif
 280                         if( matches[i].rm_so <= matches[0].rm_eo ) {
 281                                 int n;
 282                                 for ( n = matches[i].rm_so; n < matches[i].rm_eo; n++) {
 283                                         Debug( LDAP_DEBUG_ACL, "%c", e->e_ndn[n], 0, 0 );
 284                                 }
 285                         }
 286 #ifdef NEW_LOGGING
 287                         LDAP_LOG( ACL, ARGS, "\n" , 0, 0, 0 );
 288 #else
 289                         Debug( LDAP_DEBUG_ARGS, "\n", 0, 0, 0 );
 290 #endif
 291                 }
 292
 293 vd_access:
 294                 control = acl_mask( a, &mask, be, conn, op,
 295                         e, desc, val, matches, count, state );
 296
 297                 if ( control != ACL_BREAK ) {
 298                         break;
 299                 }
 300
 301                 memset(matches, '\0', sizeof(matches));
 302         }
 303
 304         if ( ACL_IS_INVALID( mask ) ) {
 305 #ifdef NEW_LOGGING
 306                 LDAP_LOG( ACL, DETAIL1,
 307                         "access_allowed: conn %lu \"%s\" (%s) invalid!\n",
 308                     conn->c_connid, e->e_dn, attr );
 309 #else
 310                 Debug( LDAP_DEBUG_ACL,
 311                         "=> access_allowed: \"%s\" (%s) invalid!\n",
 312                         e->e_dn, attr, 0 );
 313 #endif
 314                 ACL_INIT(mask);
 315
 316         } else if ( control == ACL_BREAK ) {
 317 #ifdef NEW_LOGGING
 318                 LDAP_LOG( ACL, DETAIL1,
 319                         "access_allowed: conn %lu        no more rules\n", conn->c_connid, 0,0 );
 320 #else
 321                 Debug( LDAP_DEBUG_ACL,
 322                         "=> access_allowed: no more rules\n", 0, 0, 0);
 323 #endif
 324
 325                 goto done;
 326         }
 327
 328 #ifdef NEW_LOGGING
 329         LDAP_LOG( ACL, ENTRY,
 330                 "access_allowed: %s access %s by %s\n",
 331                 access2str( access ), ACL_GRANT( mask, access ) ? "granted" : "denied",
 332                 accessmask2str( mask, accessmaskbuf ) );
 333 #else
 334         Debug( LDAP_DEBUG_ACL,
 335                 "=> access_allowed: %s access %s by %s\n",
 336                 access2str( access ),
 337                 ACL_GRANT(mask, access) ? "granted" : "denied",
 338                 accessmask2str( mask, accessmaskbuf ) );
 339 #endif
 340
 341         ret = ACL_GRANT(mask, access);
 342
 343 done:
 344         if( state != NULL ) {
 345                 state->as_recorded |= ACL_STATE_RECORDED;
 346                 state->as_result = ret;
 347         }
 348         return ret;
 349 }
 350
 351 /*
 352  * acl_get - return the acl applicable to entry e, attribute
 353  * attr.  the acl returned is suitable for use in subsequent calls to
 354  * acl_access_allowed().
 355  */
 356
 357 static AccessControl *
 358 acl_get(
 359         AccessControl *a,
 360         int                     *count,
 361     Backend             *be,
 362     Operation   *op,
 363     Entry               *e,
 364         AttributeDescription *desc,
 365     int                 nmatch,
 366     regmatch_t  *matches )
 367 {
 368         const char *attr;
 369         int dnlen, patlen;
 370
 371         assert( e != NULL );
 372         assert( count != NULL );
 373         assert( desc != NULL );
 374
 375         attr = desc->ad_cname.bv_val;
 376
 377         assert( attr != NULL );
 378
 379         if( a == NULL ) {
 380                 if( be == NULL ) {
 381                         a = global_acl;
 382                 } else {
 383                         a = be->be_acl;
 384                 }
 385
 386                 assert( a != NULL );
 387
 388         } else {
 389                 a = a->acl_next;
 390         }
 391
 392         dnlen = e->e_nname.bv_len;
 393
 394         for ( ; a != NULL; a = a->acl_next ) {
 395                 (*count) ++;
 396
 397                 if ( a->acl_dn_pat.bv_len || ( a->acl_dn_style != ACL_STYLE_REGEX )) {
 398                         if ( a->acl_dn_style == ACL_STYLE_REGEX ) {
 399 #ifdef NEW_LOGGING
 400                                 LDAP_LOG( ACL, DETAIL1,
 401                                         "acl_get: dnpat [%d] %s nsub: %d\n",
 402                                         *count, a->acl_dn_pat.bv_val,
 403                                         (int) a->acl_dn_re.re_nsub );
 404 #else
 405                                 Debug( LDAP_DEBUG_ACL, "=> dnpat: [%d] %s nsub: %d\n",
 406                                         *count, a->acl_dn_pat.bv_val, (int) a->acl_dn_re.re_nsub );
 407 #endif
 408                                 if (regexec(&a->acl_dn_re, e->e_ndn, nmatch, matches, 0))
 409                                         continue;
 410
 411                         } else {
 412 #ifdef NEW_LOGGING
 413                                 LDAP_LOG( ACL, DETAIL1, "acl_get: dn [%d] %s\n",
 414                                            *count, a->acl_dn_pat.bv_val, 0 );
 415 #else
 416                                 Debug( LDAP_DEBUG_ACL, "=> dn: [%d] %s\n",
 417                                         *count, a->acl_dn_pat.bv_val, 0 );
 418 #endif
 419                                 patlen = a->acl_dn_pat.bv_len;
 420                                 if ( dnlen < patlen )
 421                                         continue;
 422
 423                                 if ( a->acl_dn_style == ACL_STYLE_BASE ) {
 424                                         /* base dn -- entire object DN must match */
 425                                         if ( dnlen != patlen )
 426                                                 continue;
 427
 428                                 } else if ( a->acl_dn_style == ACL_STYLE_ONE ) {
 429                                         int rdnlen = -1;
 430
 431                                         if ( dnlen <= patlen )
 432                                                 continue;
 433
 434                                         if ( !DN_SEPARATOR( e->e_ndn[dnlen - patlen - 1] ) )
 435                                                 continue;
 436
 437                                         rdnlen = dn_rdnlen( NULL, &e->e_nname );
 438                                         if ( rdnlen != dnlen - patlen - 1 )
 439                                                 continue;
 440
 441                                 } else if ( a->acl_dn_style == ACL_STYLE_SUBTREE ) {
 442                                         if ( dnlen > patlen && !DN_SEPARATOR( e->e_ndn[dnlen - patlen - 1] ) )
 443                                                 continue;
 444
 445                                 } else if ( a->acl_dn_style == ACL_STYLE_CHILDREN ) {
 446                                         if ( dnlen <= patlen )
 447                                                 continue;
 448                                         if ( !DN_SEPARATOR( e->e_ndn[dnlen - patlen - 1] ) )
 449                                                 continue;
 450                                 }
 451
 452                                 if ( strcmp( a->acl_dn_pat.bv_val, e->e_ndn + dnlen - patlen ) != 0 )
 453                                         continue;
 454                         }
 455
 456 #ifdef NEW_LOGGING
 457                         LDAP_LOG( ACL, DETAIL1,
 458                                 "acl_get: [%d] matched\n", *count, 0, 0 );
 459 #else
 460                         Debug( LDAP_DEBUG_ACL, "=> acl_get: [%d] matched\n",
 461                                 *count, 0, 0 );
 462 #endif
 463                 }
 464
 465                 if ( a->acl_filter != NULL ) {
 466                         ber_int_t rc = test_filter( NULL, NULL, NULL, e, a->acl_filter );
 467                         if ( rc != LDAP_COMPARE_TRUE ) {
 468                                 continue;
 469                         }
 470                 }
 471
 472 #ifdef NEW_LOGGING
 473                 LDAP_LOG( ACL, DETAIL1,
 474                         "acl_get: [%d] check attr %s\n", *count, attr ,0 );
 475 #else
 476                 Debug( LDAP_DEBUG_ACL, "=> acl_get: [%d] check attr %s\n",
 477                        *count, attr, 0);
 478 #endif
 479                 if ( attr == NULL || a->acl_attrs == NULL ||
 480                         ad_inlist( desc, a->acl_attrs ) )
 481                 {
 482 #ifdef NEW_LOGGING
 483                         LDAP_LOG( ACL, DETAIL1,
 484                                 "acl_get:  [%d] acl %s attr: %s\n", *count, e->e_dn, attr );
 485 #else
 486                         Debug( LDAP_DEBUG_ACL,
 487                                 "<= acl_get: [%d] acl %s attr: %s\n",
 488                                 *count, e->e_dn, attr );
 489 #endif
 490                         return a;
 491                 }
 492                 matches[0].rm_so = matches[0].rm_eo = -1;
 493         }
 494
 495 #ifdef NEW_LOGGING
 496         LDAP_LOG( ACL, RESULTS, "acl_get: done.\n", 0, 0, 0 );
 497 #else
 498         Debug( LDAP_DEBUG_ACL, "<= acl_get: done.\n", 0, 0, 0 );
 499 #endif
 500         return( NULL );
 501 }
 502
 503 /*
 504  * Record value-dependent access control state
 505  */
 506 #define ACL_RECORD_VALUE_STATE do { \
 507                 if( state && !( state->as_recorded & ACL_STATE_RECORDED_VD )) { \
 508                         state->as_recorded |= ACL_STATE_RECORDED_VD; \
 509                         state->as_vd_acl = a; \
 510                         AC_MEMCPY( state->as_vd_acl_matches, matches, \
 511                                 sizeof( state->as_vd_acl_matches )) ; \
 512                         state->as_vd_acl_count = count; \
 513                         state->as_vd_access = b; \
 514                         state->as_vd_access_count = i; \
 515                 } \
 516         } while( 0 )
 517
 518 /*
 519  * acl_mask - modifies mask based upon the given acl and the
 520  * requested access to entry e, attribute attr, value val.  if val
 521  * is null, access to the whole attribute is assumed (all values).
 522  *
 523  * returns      0       access NOT allowed
 524  *              1       access allowed
 525  */
 526
 527 static slap_control_t
 528 acl_mask(
 529     AccessControl       *a,
 530         slap_mask_t *mask,
 531     Backend             *be,
 532     Connection  *conn,
 533     Operation   *op,
 534     Entry               *e,
 535         AttributeDescription *desc,
 536     struct berval       *val,
 537         regmatch_t      *matches,
 538         int     count,
 539         AccessControlState *state )
 540 {
 541         int             i, odnlen, patlen;
 542         Access  *b;
 543 #ifdef LDAP_DEBUG
 544         char accessmaskbuf[ACCESSMASK_MAXLEN];
 545 #endif
 546         const char *attr;
 547
 548         assert( a != NULL );
 549         assert( mask != NULL );
 550         assert( desc != NULL );
 551
 552         attr = desc->ad_cname.bv_val;
 553
 554         assert( attr != NULL );
 555
 556 #ifdef NEW_LOGGING
 557         LDAP_LOG( ACL, ENTRY,
 558                 "acl_mask: conn %lu  access to entry \"%s\", attr \"%s\" requested\n",
 559                 conn->c_connid, e->e_dn, attr );
 560
 561         LDAP_LOG( ACL, ARGS,
 562                 " to %s by \"%s\", (%s) \n", val ? "value" : "all values",
 563                 op->o_ndn.bv_val ? op->o_ndn.bv_val : "",
 564                 accessmask2str( *mask, accessmaskbuf ) );
 565 #else
 566         Debug( LDAP_DEBUG_ACL,
 567                 "=> acl_mask: access to entry \"%s\", attr \"%s\" requested\n",
 568                 e->e_dn, attr, 0 );
 569
 570         Debug( LDAP_DEBUG_ACL,
 571                 "=> acl_mask: to %s by \"%s\", (%s) \n",
 572                 val ? "value" : "all values",
 573                 op->o_ndn.bv_val ?  op->o_ndn.bv_val : "",
 574                 accessmask2str( *mask, accessmaskbuf ) );
 575 #endif
 576
 577         if( state && ( state->as_recorded & ACL_STATE_RECORDED_VD )
 578                 && state->as_vd_acl == a )
 579         {
 580                 b = state->as_vd_access;
 581                 i = state->as_vd_access_count;
 582
 583         } else {
 584                 b = a->acl_access;
 585                 i = 1;
 586         }
 587
 588         for ( ; b != NULL; b = b->a_next, i++ ) {
 589                 slap_mask_t oldmask, modmask;
 590
 591                 ACL_INVALIDATE( modmask );
 592
 593                 /* AND <who> clauses */
 594                 if ( b->a_dn_pat.bv_len != 0 ) {
 595 #ifdef NEW_LOGGING
 596                         LDAP_LOG( ACL, DETAIL1,
 597                                 "acl_mask: conn %lu  check a_dn_pat: %s\n",
 598                                 conn->c_connid, b->a_dn_pat.bv_val ,0 );
 599 #else
 600                         Debug( LDAP_DEBUG_ACL, "<= check a_dn_pat: %s\n",
 601                                 b->a_dn_pat.bv_val, 0, 0);
 602 #endif
 603                         /*
 604                          * if access applies to the entry itself, and the
 605                          * user is bound as somebody in the same namespace as
 606                          * the entry, OR the given dn matches the dn pattern
 607                          */
 608                         if ( ber_bvcmp( &b->a_dn_pat, &aci_bv_anonymous ) == 0 ) {
 609                                 if ( op->o_ndn.bv_len != 0 ) {
 610                                         continue;
 611                                 }
 612
 613                         } else if ( ber_bvcmp( &b->a_dn_pat, &aci_bv_users ) == 0 ) {
 614                                 if ( op->o_ndn.bv_len == 0 ) {
 615                                         continue;
 616                                 }
 617
 618                         } else if ( ber_bvcmp( &b->a_dn_pat, &aci_bv_self ) == 0 ) {
 619                                 if ( op->o_ndn.bv_len == 0 ) {
 620                                         continue;
 621                                 }
 622
 623                                 if ( e->e_dn == NULL || !dn_match( &e->e_nname, &op->o_ndn ) ) {
 624                                         continue;
 625                                 }
 626
 627                         } else if ( b->a_dn_style == ACL_STYLE_REGEX ) {
 628                                 if ( !ber_bvccmp( &b->a_dn_pat, '*' ) ) {
 629                                         int ret = regex_matches( &b->a_dn_pat,
 630                                                 op->o_ndn.bv_val, e->e_ndn, matches );
 631
 632                                         if( ret == 0 ) {
 633                                                 continue;
 634                                         }
 635                                 }
 636
 637                         } else {
 638                                 struct berval pat;
 639                                 int got_match = 0;
 640
 641                                 if ( e->e_dn == NULL )
 642                                         continue;
 643
 644                                 if ( b->a_dn_expand ) {
 645                                         struct berval bv;
 646                                         char buf[ACL_BUF_SIZE];
 647
 648                                         bv.bv_len = sizeof( buf ) - 1;
 649                                         bv.bv_val = buf;
 650
 651                                         string_expand(&bv, &b->a_dn_pat,
 652                                                         e->e_ndn, matches);
 653                                         if ( dnNormalize2(NULL, &bv, &pat) != LDAP_SUCCESS ) {
 654                                                 /* did not expand to a valid dn */
 655                                                 continue;
 656                                         }
 657                                 } else {
 658                                         pat = b->a_dn_pat;
 659                                 }
 660
 661                                 patlen = pat.bv_len;
 662                                 odnlen = op->o_ndn.bv_len;
 663                                 if ( odnlen < patlen ) {
 664                                         goto dn_match_cleanup;
 665
 666                                 }
 667
 668                                 if ( b->a_dn_style == ACL_STYLE_BASE ) {
 669                                         /* base dn -- entire object DN must match */
 670                                         if ( odnlen != patlen ) {
 671                                                 goto dn_match_cleanup;
 672                                         }
 673
 674                                 } else if ( b->a_dn_style == ACL_STYLE_ONE ) {
 675                                         int rdnlen = -1;
 676
 677                                         if ( odnlen <= patlen ) {
 678                                                 goto dn_match_cleanup;
 679                                         }
 680
 681                                         if ( !DN_SEPARATOR( op->o_ndn.bv_val[odnlen - patlen - 1] ) ) {
 682                                                 goto dn_match_cleanup;
 683                                         }
 684
 685                                         rdnlen = dn_rdnlen( NULL, &op->o_ndn );
 686                                         if ( rdnlen != odnlen - patlen - 1 ) {
 687                                                 goto dn_match_cleanup;
 688                                         }
 689
 690                                 } else if ( b->a_dn_style == ACL_STYLE_SUBTREE ) {
 691                                         if ( odnlen > patlen && !DN_SEPARATOR( op->o_ndn.bv_val[odnlen - patlen - 1] ) ) {
 692                                                 goto dn_match_cleanup;
 693                                         }
 694
 695                                 } else if ( b->a_dn_style == ACL_STYLE_CHILDREN ) {
 696                                         if ( odnlen <= patlen ) {
 697                                                 goto dn_match_cleanup;
 698                                         }
 699
 700                                         if ( !DN_SEPARATOR( op->o_ndn.bv_val[odnlen - patlen - 1] ) ) {
 701                                                 goto dn_match_cleanup;
 702                                         }
 703                                 }
 704
 705                                 got_match = !strcmp( pat.bv_val, op->o_ndn.bv_val + odnlen - patlen );
 706
 707 dn_match_cleanup:;
 708                                 if ( pat.bv_val != b->a_dn_pat.bv_val ) {
 709                                         free( pat.bv_val );
 710                                 }
 711
 712                                 if ( !got_match ) {
 713                                         continue;
 714                                 }
 715                         }
 716                 }
 717
 718                 if ( b->a_sockurl_pat.bv_len ) {
 719 #ifdef NEW_LOGGING
 720                         LDAP_LOG( ACL, DETAIL1,
 721                                    "acl_mask: conn %lu  check a_sockurl_pat: %s\n",
 722                                    conn->c_connid, b->a_sockurl_pat.bv_val , 0 );
 723 #else
 724                         Debug( LDAP_DEBUG_ACL, "<= check a_sockurl_pat: %s\n",
 725                                 b->a_sockurl_pat.bv_val, 0, 0 );
 726 #endif
 727
 728                         if ( !ber_bvccmp( &b->a_sockurl_pat, '*' ) ) {
 729                                 if ( b->a_sockurl_style == ACL_STYLE_REGEX) {
 730                                         if (!regex_matches( &b->a_sockurl_pat, conn->c_listener_url.bv_val,
 731                                                         e->e_ndn, matches ) )
 732                                         {
 733                                                 continue;
 734                                         }
 735                                 } else {
 736                                         if ( ber_bvstrcasecmp( &b->a_sockurl_pat, &conn->c_listener_url ) != 0 )
 737                                                 continue;
 738                                 }
 739                         }
 740                 }
 741
 742                 if ( b->a_domain_pat.bv_len ) {
 743 #ifdef NEW_LOGGING
 744                         LDAP_LOG( ACL, DETAIL1,
 745                                    "acl_mask: conn %lu  check a_domain_pat: %s\n",
 746                                    conn->c_connid, b->a_domain_pat.bv_val , 0 );
 747 #else
 748                         Debug( LDAP_DEBUG_ACL, "<= check a_domain_pat: %s\n",
 749                                 b->a_domain_pat.bv_val, 0, 0 );
 750 #endif
 751                         if ( !ber_bvccmp( &b->a_domain_pat, '*' ) ) {
 752                                 if ( b->a_domain_style == ACL_STYLE_REGEX) {
 753                                         if (!regex_matches( &b->a_domain_pat, conn->c_peer_domain.bv_val,
 754                                                         e->e_ndn, matches ) )
 755                                         {
 756                                                 continue;
 757                                         }
 758                                 } else {
 759                                         char buf[ACL_BUF_SIZE];
 760
 761                                         struct berval   cmp = conn->c_peer_domain;
 762                                         struct berval   pat = b->a_domain_pat;
 763
 764                                         if ( b->a_domain_expand ) {
 765                                                 struct berval bv;
 766
 767                                                 bv.bv_len = sizeof(buf) - 1;
 768                                                 bv.bv_val = buf;
 769
 770                                                 string_expand(&bv, &b->a_domain_pat, e->e_ndn, matches);
 771                                                 pat = bv;
 772                                         }
 773
 774                                         if ( b->a_domain_style == ACL_STYLE_SUBTREE ) {
 775                                                 int offset = cmp.bv_len - pat.bv_len;
 776                                                 if ( offset < 0 ) {
 777                                                         continue;
 778                                                 }
 779
 780                                                 if ( offset == 1 || ( offset > 1 && cmp.bv_val[ offset - 1 ] != '.' ) ) {
 781                                                         continue;
 782                                                 }
 783
 784                                                 /* trim the domain */
 785                                                 cmp.bv_val = &cmp.bv_val[ offset ];
 786                                                 cmp.bv_len -= offset;
 787                                         }
 788
 789                                         if ( ber_bvstrcasecmp( &pat, &cmp ) != 0 ) {
 790                                                 continue;
 791                                         }
 792                                 }
 793                         }
 794                 }
 795
 796                 if ( b->a_peername_pat.bv_len ) {
 797 #ifdef NEW_LOGGING
 798                         LDAP_LOG( ACL, DETAIL1,
 799                                    "acl_mask: conn %lu  check a_perrname_path: %s\n",
 800                                    conn->c_connid, b->a_peername_pat.bv_val , 0 );
 801 #else
 802                         Debug( LDAP_DEBUG_ACL, "<= check a_peername_path: %s\n",
 803                                 b->a_peername_pat.bv_val, 0, 0 );
 804 #endif
 805                         if ( !ber_bvccmp( &b->a_peername_pat, '*' ) ) {
 806                                 if ( b->a_peername_style == ACL_STYLE_REGEX) {
 807                                         if (!regex_matches( &b->a_peername_pat, conn->c_peer_name.bv_val,
 808                                                         e->e_ndn, matches ) )
 809                                         {
 810                                                 continue;
 811                                         }
 812                                 } else {
 813                                         if ( ber_bvstrcasecmp( &b->a_peername_pat, &conn->c_peer_name ) != 0 )
 814                                                 continue;
 815                                 }
 816                         }
 817                 }
 818
 819                 if ( b->a_sockname_pat.bv_len ) {
 820 #ifdef NEW_LOGGING
 821                         LDAP_LOG( ACL, DETAIL1,
 822                                    "acl_mask: conn %lu  check a_sockname_path: %s\n",
 823                                    conn->c_connid, b->a_sockname_pat.bv_val , 0 );
 824 #else
 825                         Debug( LDAP_DEBUG_ACL, "<= check a_sockname_path: %s\n",
 826                                 b->a_sockname_pat.bv_val, 0, 0 );
 827 #endif
 828                         if ( !ber_bvccmp( &b->a_sockname_pat, '*' ) ) {
 829                                 if ( b->a_sockname_style == ACL_STYLE_REGEX) {
 830                                         if (!regex_matches( &b->a_sockname_pat, conn->c_sock_name.bv_val,
 831                                                         e->e_ndn, matches ) )
 832                                         {
 833                                                 continue;
 834                                         }
 835                                 } else {
 836                                         if ( ber_bvstrcasecmp( &b->a_sockname_pat, &conn->c_sock_name ) != 0 )
 837                                                 continue;
 838                                 }
 839                         }
 840                 }
 841
 842                 if ( b->a_dn_at != NULL ) {
 843                         Attribute       *at;
 844                         struct berval   bv;
 845                         int rc, match = 0;
 846                         const char *text;
 847                         const char *attr = b->a_dn_at->ad_cname.bv_val;
 848
 849                         assert( attr != NULL );
 850
 851                         if ( op->o_ndn.bv_len == 0 ) {
 852                                 continue;
 853                         }
 854
 855 #ifdef NEW_LOGGING
 856                         LDAP_LOG( ACL, DETAIL1,
 857                                    "acl_mask: conn %lu  check a_dn_pat: %s\n",
 858                                    conn->c_connid, attr , 0 );
 859 #else
 860                         Debug( LDAP_DEBUG_ACL, "<= check a_dn_at: %s\n",
 861                                 attr, 0, 0);
 862 #endif
 863                         bv = op->o_ndn;
 864
 865                         /* see if asker is listed in dnattr */
 866                         for( at = attrs_find( e->e_attrs, b->a_dn_at );
 867                                 at != NULL;
 868                                 at = attrs_find( at->a_next, b->a_dn_at ) )
 869                         {
 870                                 if( value_find( b->a_dn_at, at->a_vals, &bv ) == 0 ) {
 871                                         /* found it */
 872                                         match = 1;
 873                                         break;
 874                                 }
 875                         }
 876
 877                         if( match ) {
 878                                 /* have a dnattr match. if this is a self clause then
 879                                  * the target must also match the op dn.
 880                                  */
 881                                 if ( b->a_dn_self ) {
 882                                         /* check if the target is an attribute. */
 883                                         if ( val == NULL )
 884                                                 continue;
 885                                         /* target is attribute, check if the attribute value
 886                                          * is the op dn.
 887                                          */
 888                                         rc = value_match( &match, b->a_dn_at,
 889                                                 b->a_dn_at->ad_type->sat_equality, 0,
 890                                                 val, &bv, &text );
 891                                         /* on match error or no match, fail the ACL clause */
 892                                         if (rc != LDAP_SUCCESS || match != 0 )
 893                                                 continue;
 894                                 }
 895                         } else {
 896                                 /* no dnattr match, check if this is a self clause */
 897                                 if ( ! b->a_dn_self )
 898                                         continue;
 899
 900                                 ACL_RECORD_VALUE_STATE;
 901
 902                                 /* this is a self clause, check if the target is an
 903                                  * attribute.
 904                                  */
 905                                 if ( val == NULL )
 906                                         continue;
 907
 908                                 /* target is attribute, check if the attribute value
 909                                  * is the op dn.
 910                                  */
 911                                 rc = value_match( &match, b->a_dn_at,
 912                                         b->a_dn_at->ad_type->sat_equality, 0,
 913                                         val, &bv, &text );
 914
 915                                 /* on match error or no match, fail the ACL clause */
 916                                 if (rc != LDAP_SUCCESS || match != 0 )
 917                                         continue;
 918                         }
 919                 }
 920
 921                 if ( b->a_group_pat.bv_len ) {
 922                         char buf[ACL_BUF_SIZE];
 923                         struct berval bv;
 924                         struct berval ndn = { 0, NULL };
 925                         int rc;
 926
 927                         if ( op->o_ndn.bv_len == 0 ) {
 928                                 continue;
 929                         }
 930
 931                         bv.bv_len = sizeof(buf) - 1;
 932                         bv.bv_val = buf;
 933
 934                         /* b->a_group is an unexpanded entry name, expanded it should be an
 935                          * entry with objectclass group* and we test to see if odn is one of
 936                          * the values in the attribute group
 937                          */
 938                         /* see if asker is listed in dnattr */
 939                         if ( b->a_group_style == ACL_STYLE_REGEX ) {
 940                                 string_expand(&bv, &b->a_group_pat, e->e_ndn, matches);
 941                                 if ( dnNormalize2(NULL, &bv, &ndn) != LDAP_SUCCESS ) {
 942                                         /* did not expand to a valid dn */
 943                                         continue;
 944                                 }
 945                                 bv = ndn;
 946                         } else {
 947                                 bv = b->a_group_pat;
 948                         }
 949
 950                         rc = backend_group(be, conn, op, e, &bv, &op->o_ndn,
 951                                 b->a_group_oc, b->a_group_at);
 952                         if ( ndn.bv_val )
 953                                 free( ndn.bv_val );
 954                         if ( rc != 0 ) {
 955                                 continue;
 956                         }
 957                 }
 958
 959                 if ( b->a_set_pat.bv_len != 0 ) {
 960                         if (aci_match_set( &b->a_set_pat, be, e, conn, op, 0 ) == 0) {
 961                                 continue;
 962                         }
 963                 }
 964
 965                 if ( b->a_authz.sai_ssf ) {
 966 #ifdef NEW_LOGGING
 967                         LDAP_LOG( ACL, DETAIL1,
 968                                 "acl_mask: conn %lu  check a_authz.sai_ssf: ACL %u > OP %u\n",
 969                                 conn->c_connid, b->a_authz.sai_ssf, op->o_ssf  );
 970 #else
 971                         Debug( LDAP_DEBUG_ACL, "<= check a_authz.sai_ssf: ACL %u > OP %u\n",
 972                                 b->a_authz.sai_ssf, op->o_ssf, 0 );
 973 #endif
 974                         if ( b->a_authz.sai_ssf >  op->o_ssf ) {
 975                                 continue;
 976                         }
 977                 }
 978
 979                 if ( b->a_authz.sai_transport_ssf ) {
 980 #ifdef NEW_LOGGING
 981                         LDAP_LOG( ACL, DETAIL1,
 982                                 "acl_mask: conn %lu  check a_authz.sai_transport_ssf: "
 983                                 "ACL %u > OP %u\n",
 984                                 conn->c_connid, b->a_authz.sai_transport_ssf,
 985                                 op->o_transport_ssf  );
 986 #else
 987                         Debug( LDAP_DEBUG_ACL,
 988                                 "<= check a_authz.sai_transport_ssf: ACL %u > OP %u\n",
 989                                 b->a_authz.sai_transport_ssf, op->o_transport_ssf, 0 );
 990 #endif
 991                         if ( b->a_authz.sai_transport_ssf >  op->o_transport_ssf ) {
 992                                 continue;
 993                         }
 994                 }
 995
 996                 if ( b->a_authz.sai_tls_ssf ) {
 997 #ifdef NEW_LOGGING
 998                         LDAP_LOG( ACL, DETAIL1,
 999                                 "acl_mask: conn %lu  check a_authz.sai_tls_ssf: ACL %u > "
1000                                 "OP %u\n",
1001                                 conn->c_connid, b->a_authz.sai_tls_ssf, op->o_tls_ssf  );
1002 #else
1003                         Debug( LDAP_DEBUG_ACL,
1004                                 "<= check a_authz.sai_tls_ssf: ACL %u > OP %u\n",
1005                                 b->a_authz.sai_tls_ssf, op->o_tls_ssf, 0 );
1006 #endif
1007                         if ( b->a_authz.sai_tls_ssf >  op->o_tls_ssf ) {
1008                                 continue;
1009                         }
1010                 }
1011
1012                 if ( b->a_authz.sai_sasl_ssf ) {
1013 #ifdef NEW_LOGGING
1014                         LDAP_LOG( ACL, DETAIL1,
1015                            "acl_mask: conn %lu check a_authz.sai_sasl_ssf: "
1016                            "ACL %u > OP %u\n",
1017                                 conn->c_connid, b->a_authz.sai_sasl_ssf, op->o_sasl_ssf );
1018 #else
1019                         Debug( LDAP_DEBUG_ACL,
1020                                 "<= check a_authz.sai_sasl_ssf: ACL %u > OP %u\n",
1021                                 b->a_authz.sai_sasl_ssf, op->o_sasl_ssf, 0 );
1022 #endif
1023                         if ( b->a_authz.sai_sasl_ssf >  op->o_sasl_ssf ) {
1024                                 continue;
1025                         }
1026                 }
1027
1028 #ifdef SLAPD_ACI_ENABLED
1029                 if ( b->a_aci_at != NULL ) {
1030                         Attribute       *at;
1031                         slap_access_t grant, deny, tgrant, tdeny;
1032
1033                         /* this case works different from the others above.
1034                          * since aci's themselves give permissions, we need
1035                          * to first check b->a_access_mask, the ACL's access level.
1036                          */
1037
1038                         if ( e->e_nname.bv_len == 0 ) {
1039                                 /* no ACIs in the root DSE */
1040                                 continue;
1041                         }
1042
1043                         /* first check if the right being requested
1044                          * is allowed by the ACL clause.
1045                          */
1046                         if ( ! ACL_GRANT( b->a_access_mask, *mask ) ) {
1047                                 continue;
1048                         }
1049
1050                         /* get the aci attribute */
1051                         at = attr_find( e->e_attrs, b->a_aci_at );
1052                         if ( at == NULL ) {
1053                                 continue;
1054                         }
1055
1056                         ACL_RECORD_VALUE_STATE;
1057
1058                         /* start out with nothing granted, nothing denied */
1059                         ACL_INIT(tgrant);
1060                         ACL_INIT(tdeny);
1061
1062                         /* the aci is an multi-valued attribute.  The
1063                          * rights are determined by OR'ing the individual
1064                          * rights given by the acis.
1065                          */
1066                         for ( i = 0; at->a_vals[i].bv_val != NULL; i++ ) {
1067                                 if (aci_mask( be, conn, op,
1068                                         e, desc, val, &at->a_vals[i],
1069                                         matches, &grant, &deny ) != 0)
1070                                 {
1071                                         tgrant |= grant;
1072                                         tdeny |= deny;
1073                                 }
1074                         }
1075
1076                         /* remove anything that the ACL clause does not allow */
1077                         tgrant &= b->a_access_mask & ACL_PRIV_MASK;
1078                         tdeny &= ACL_PRIV_MASK;
1079
1080                         /* see if we have anything to contribute */
1081                         if( ACL_IS_INVALID(tgrant) && ACL_IS_INVALID(tdeny) ) {
1082                                 continue;
1083                         }
1084
1085                         /* this could be improved by changing acl_mask so that it can deal with
1086                          * by clauses that return grant/deny pairs.  Right now, it does either
1087                          * additive or subtractive rights, but not both at the same time.  So,
1088                          * we need to combine the grant/deny pair into a single rights mask in
1089                          * a smart way:  if either grant or deny is "empty", then we use the
1090                          * opposite as is, otherwise we remove any denied rights from the grant
1091                          * rights mask and construct an additive mask.
1092                          */
1093                         if (ACL_IS_INVALID(tdeny)) {
1094                                 modmask = tgrant | ACL_PRIV_ADDITIVE;
1095
1096                         } else if (ACL_IS_INVALID(tgrant)) {
1097                                 modmask = tdeny | ACL_PRIV_SUBSTRACTIVE;
1098
1099                         } else {
1100                                 modmask = (tgrant & ~tdeny) | ACL_PRIV_ADDITIVE;
1101                         }
1102
1103                 } else
1104 #endif
1105                 {
1106                         modmask = b->a_access_mask;
1107                 }
1108
1109 #ifdef NEW_LOGGING
1110                 LDAP_LOG( ACL, RESULTS,
1111                            "acl_mask: [%d] applying %s (%s)\n",
1112                            i, accessmask2str( modmask, accessmaskbuf),
1113                            b->a_type == ACL_CONTINUE ? "continue" : b->a_type == ACL_BREAK
1114                            ? "break" : "stop"  );
1115 #else
1116                 Debug( LDAP_DEBUG_ACL,
1117                         "<= acl_mask: [%d] applying %s (%s)\n",
1118                         i, accessmask2str( modmask, accessmaskbuf ),
1119                         b->a_type == ACL_CONTINUE
1120                                 ? "continue"
1121                                 : b->a_type == ACL_BREAK
1122                                         ? "break"
1123                                         : "stop" );
1124 #endif
1125                 /* save old mask */
1126                 oldmask = *mask;
1127
1128                 if( ACL_IS_ADDITIVE(modmask) ) {
1129                         /* add privs */
1130                         ACL_PRIV_SET( *mask, modmask );
1131
1132                         /* cleanup */
1133                         ACL_PRIV_CLR( *mask, ~ACL_PRIV_MASK );
1134
1135                 } else if( ACL_IS_SUBTRACTIVE(modmask) ) {
1136                         /* substract privs */
1137                         ACL_PRIV_CLR( *mask, modmask );
1138
1139                         /* cleanup */
1140                         ACL_PRIV_CLR( *mask, ~ACL_PRIV_MASK );
1141
1142                 } else {
1143                         /* assign privs */
1144                         *mask = modmask;
1145                 }
1146
1147 #ifdef NEW_LOGGING
1148                 LDAP_LOG( ACL, DETAIL1,
1149                            "acl_mask: conn %lu  [%d] mask: %s\n",
1150                            conn->c_connid, i, accessmask2str( *mask, accessmaskbuf)  );
1151 #else
1152                 Debug( LDAP_DEBUG_ACL,
1153                         "<= acl_mask: [%d] mask: %s\n",
1154                         i, accessmask2str(*mask, accessmaskbuf), 0 );
1155 #endif
1156
1157                 if( b->a_type == ACL_CONTINUE ) {
1158                         continue;
1159
1160                 } else if ( b->a_type == ACL_BREAK ) {
1161                         return ACL_BREAK;
1162
1163                 } else {
1164                         return ACL_STOP;
1165                 }
1166         }
1167
1168         /* implicit "by * none" clause */
1169         ACL_INIT(*mask);
1170
1171 #ifdef NEW_LOGGING
1172         LDAP_LOG( ACL, RESULTS,
1173                    "acl_mask: conn %lu  no more <who> clauses, returning %d (stop)\n",
1174                    conn->c_connid, accessmask2str( *mask, accessmaskbuf) , 0 );
1175 #else
1176         Debug( LDAP_DEBUG_ACL,
1177                 "<= acl_mask: no more <who> clauses, returning %s (stop)\n",
1178                 accessmask2str(*mask, accessmaskbuf), 0, 0 );
1179 #endif
1180         return ACL_STOP;
1181 }
1182
1183 /*
1184  * acl_check_modlist - check access control on the given entry to see if
1185  * it allows the given modifications by the user associated with op.
1186  * returns      1       if mods allowed ok
1187  *                      0       mods not allowed
1188  */
1189
1190 int
1191 acl_check_modlist(
1192     Backend     *be,
1193     Connection  *conn,
1194     Operation   *op,
1195     Entry       *e,
1196     Modifications       *mlist
1197 )
1198 {
1199         struct berval *bv;
1200
1201         assert( be != NULL );
1202
1203         /* short circuit root database access */
1204         if ( be_isroot( be, &op->o_ndn ) ) {
1205 #ifdef NEW_LOGGING
1206                 LDAP_LOG( ACL, DETAIL1,
1207                            "acl_check_modlist: conn %lu  access granted to root user\n",
1208                            conn->c_connid, 0, 0 );
1209 #else
1210                 Debug( LDAP_DEBUG_ACL,
1211                         "<= acl_access_allowed: granted to database root\n",
1212                     0, 0, 0 );
1213 #endif
1214                 return 1;
1215         }
1216
1217         /* use backend default access if no backend acls */
1218         if( be != NULL && be->be_acl == NULL ) {
1219 #ifdef NEW_LOGGING
1220                 LDAP_LOG( ACL, DETAIL1,
1221                         "acl_check_modlist: backend default %s access %s to \"%s\"\n",
1222                         access2str( ACL_WRITE ),
1223                         be->be_dfltaccess >= ACL_WRITE ? "granted" : "denied",
1224                         op->o_dn.bv_val  );
1225 #else
1226                 Debug( LDAP_DEBUG_ACL,
1227                         "=> access_allowed: backend default %s access %s to \"%s\"\n",
1228                         access2str( ACL_WRITE ),
1229                         be->be_dfltaccess >= ACL_WRITE ? "granted" : "denied", op->o_dn.bv_val );
1230 #endif
1231                 return be->be_dfltaccess >= ACL_WRITE;
1232
1233 #ifdef notdef
1234         /* be is always non-NULL */
1235         /* use global default access if no global acls */
1236         } else if ( be == NULL && global_acl == NULL ) {
1237 #ifdef NEW_LOGGING
1238                 LDAP_LOG( ACL, DETAIL1,
1239                         "acl_check_modlist: global default %s access %s to \"%s\"\n",
1240                    access2str( ACL_WRITE ),
1241                    global_default_access >= ACL_WRITE ? "granted" : "denied",
1242                    op->o_dn  );
1243 #else
1244                 Debug( LDAP_DEBUG_ACL,
1245                         "=> access_allowed: global default %s access %s to \"%s\"\n",
1246                         access2str( ACL_WRITE ),
1247                         global_default_access >= ACL_WRITE ? "granted" : "denied", op->o_dn );
1248 #endif
1249                 return global_default_access >= ACL_WRITE;
1250 #endif
1251         }
1252
1253         for ( ; mlist != NULL; mlist = mlist->sml_next ) {
1254                 static AccessControlState state_init = ACL_STATE_INIT;
1255                 AccessControlState state;
1256
1257                 /*
1258                  * no-user-modification operational attributes are ignored
1259                  * by ACL_WRITE checking as any found here are not provided
1260                  * by the user
1261                  */
1262                 if ( is_at_no_user_mod( mlist->sml_desc->ad_type ) ) {
1263 #ifdef NEW_LOGGING
1264                         LDAP_LOG( ACL, DETAIL1,
1265                                    "acl_check_modlist: conn %lu  no-user-mod %s: modify access granted\n",
1266                                    conn->c_connid, mlist->sml_desc->ad_cname.bv_val , 0 );
1267 #else
1268                         Debug( LDAP_DEBUG_ACL, "acl: no-user-mod %s:"
1269                                 " modify access granted\n",
1270                                 mlist->sml_desc->ad_cname.bv_val, 0, 0 );
1271 #endif
1272                         continue;
1273                 }
1274
1275                 state = state_init;
1276
1277                 switch ( mlist->sml_op ) {
1278                 case LDAP_MOD_REPLACE:
1279                         /*
1280                          * We must check both permission to delete the whole
1281                          * attribute and permission to add the specific attributes.
1282                          * This prevents abuse from selfwriters.
1283                          */
1284                         if ( ! access_allowed( be, conn, op, e,
1285                                 mlist->sml_desc, NULL, ACL_WRITE, &state ) )
1286                         {
1287                                 return( 0 );
1288                         }
1289
1290                         if ( mlist->sml_bvalues == NULL ) break;
1291
1292                         /* fall thru to check value to add */
1293
1294                 case LDAP_MOD_ADD:
1295                         assert( mlist->sml_bvalues != NULL );
1296
1297                         for ( bv = mlist->sml_bvalues; bv->bv_val != NULL; bv++ ) {
1298                                 if ( ! access_allowed( be, conn, op, e,
1299                                         mlist->sml_desc, bv, ACL_WRITE, &state ) )
1300                                 {
1301                                         return( 0 );
1302                                 }
1303                         }
1304                         break;
1305
1306                 case LDAP_MOD_DELETE:
1307                         if ( mlist->sml_bvalues == NULL ) {
1308                                 if ( ! access_allowed( be, conn, op, e,
1309                                         mlist->sml_desc, NULL, ACL_WRITE, NULL ) )
1310                                 {
1311                                         return( 0 );
1312                                 }
1313                                 break;
1314                         }
1315                         for ( bv = mlist->sml_bvalues; bv->bv_val != NULL; bv++ ) {
1316                                 if ( ! access_allowed( be, conn, op, e,
1317                                         mlist->sml_desc, bv, ACL_WRITE, &state ) )
1318                                 {
1319                                         return( 0 );
1320                                 }
1321                         }
1322                         break;
1323
1324                 case SLAP_MOD_SOFTADD:
1325                         /* allow adding attribute via modrdn thru */
1326                         break;
1327
1328                 default:
1329                         assert( 0 );
1330                         return( 0 );
1331                 }
1332         }
1333
1334         return( 1 );
1335 }
1336
1337 static int
1338 aci_get_part(
1339         struct berval *list,
1340         int ix,
1341         char sep,
1342         struct berval *bv )
1343 {
1344         int len;
1345         char *p;
1346
1347         if (bv) {
1348                 bv->bv_len = 0;
1349                 bv->bv_val = NULL;
1350         }
1351         len = list->bv_len;
1352         p = list->bv_val;
1353         while (len >= 0 && --ix >= 0) {
1354                 while (--len >= 0 && *p++ != sep) ;
1355         }
1356         while (len >= 0 && *p == ' ') {
1357                 len--;
1358                 p++;
1359         }
1360         if (len < 0)
1361                 return(-1);
1362
1363         if (!bv)
1364                 return(0);
1365
1366         bv->bv_val = p;
1367         while (--len >= 0 && *p != sep) {
1368                 bv->bv_len++;
1369                 p++;
1370         }
1371         while (bv->bv_len > 0 && *--p == ' ')
1372                 bv->bv_len--;
1373         return(bv->bv_len);
1374 }
1375
1376 BerVarray
1377 aci_set_gather (void *cookie, struct berval *name, struct berval *attr)
1378 {
1379         AciSetCookie *cp = cookie;
1380         BerVarray bvals = NULL;
1381         struct berval ndn;
1382
1383         /* this routine needs to return the bervals instead of
1384          * plain strings, since syntax is not known.  It should
1385          * also return the syntax or some "comparison cookie".
1386          */
1387
1388         if (dnNormalize2(NULL, name, &ndn) == LDAP_SUCCESS) {
1389                 const char *text;
1390                 AttributeDescription *desc = NULL;
1391                 if (slap_bv2ad(attr, &desc, &text) == LDAP_SUCCESS) {
1392                         backend_attribute(cp->be, NULL, cp->op,
1393                                 cp->e, &ndn, desc, &bvals);
1394                 }
1395                 free(ndn.bv_val);
1396         }
1397         return(bvals);
1398 }
1399
1400 static int
1401 aci_match_set (
1402         struct berval *subj,
1403     Backend *be,
1404     Entry *e,
1405     Connection *conn,
1406     Operation *op,
1407     int setref
1408 )
1409 {
1410         struct berval set = { 0, NULL };
1411         int rc = 0;
1412         AciSetCookie cookie;
1413
1414         if (setref == 0) {
1415                 ber_dupbv( &set, subj );
1416         } else {
1417                 struct berval subjdn, ndn = { 0, NULL };
1418                 struct berval setat;
1419                 BerVarray bvals;
1420                 const char *text;
1421                 AttributeDescription *desc = NULL;
1422
1423                 /* format of string is "entry/setAttrName" */
1424                 if (aci_get_part(subj, 0, '/', &subjdn) < 0) {
1425                         return(0);
1426                 }
1427
1428                 if ( aci_get_part(subj, 1, '/', &setat) < 0 ) {
1429                         setat.bv_val = SLAPD_ACI_SET_ATTR;
1430                         setat.bv_len = sizeof(SLAPD_ACI_SET_ATTR)-1;
1431                 }
1432
1433                 if ( setat.bv_val != NULL ) {
1434                         /*
1435                          * NOTE: dnNormalize2 honors the ber_len field
1436                          * as the length of the dn to be normalized
1437                          */
1438                         if ( dnNormalize2(NULL, &subjdn, &ndn) == LDAP_SUCCESS
1439                                 && slap_bv2ad(&setat, &desc, &text) == LDAP_SUCCESS )
1440                         {
1441                                 backend_attribute(be, NULL, op, e,
1442                                         &ndn, desc, &bvals);
1443                                 if ( bvals != NULL ) {
1444                                         if ( bvals[0].bv_val != NULL ) {
1445                                                 int i;
1446                                                 set = bvals[0];
1447                                                 bvals[0].bv_val = NULL;
1448                                                 for (i=1;bvals[i].bv_val;i++);
1449                                                 bvals[0].bv_val = bvals[i-1].bv_val;
1450                                                 bvals[i-1].bv_val = NULL;
1451                                         }
1452                                         ber_bvarray_free(bvals);
1453                                 }
1454                         }
1455                         if (ndn.bv_val)
1456                                 free(ndn.bv_val);
1457                 }
1458         }
1459
1460         if (set.bv_val != NULL) {
1461                 cookie.be = be;
1462                 cookie.e = e;
1463                 cookie.conn = conn;
1464                 cookie.op = op;
1465                 rc = (slap_set_filter(aci_set_gather, &cookie, &set,
1466                         &op->o_ndn, &e->e_nname, NULL) > 0);
1467                 ch_free(set.bv_val);
1468         }
1469         return(rc);
1470 }
1471
1472 #ifdef SLAPD_ACI_ENABLED
1473 static int
1474 aci_list_map_rights(
1475         struct berval *list )
1476 {
1477         struct berval bv;
1478         slap_access_t mask;
1479         int i;
1480
1481         ACL_INIT(mask);
1482         for (i = 0; aci_get_part(list, i, ',', &bv) >= 0; i++) {
1483                 if (bv.bv_len <= 0)
1484                         continue;
1485                 switch (*bv.bv_val) {
1486                 case 'c':
1487                         ACL_PRIV_SET(mask, ACL_PRIV_COMPARE);
1488                         break;
1489                 case 's':
1490                         /* **** NOTE: draft-ietf-ldapext-aci-model-0.3.txt defines
1491                          * the right 's' to mean "set", but in the examples states
1492                          * that the right 's' means "search".  The latter definition
1493                          * is used here.
1494                          */
1495                         ACL_PRIV_SET(mask, ACL_PRIV_SEARCH);
1496                         break;
1497                 case 'r':
1498                         ACL_PRIV_SET(mask, ACL_PRIV_READ);
1499                         break;
1500                 case 'w':
1501                         ACL_PRIV_SET(mask, ACL_PRIV_WRITE);
1502                         break;
1503                 case 'x':
1504                         /* **** NOTE: draft-ietf-ldapext-aci-model-0.3.txt does not
1505                          * define any equivalent to the AUTH right, so I've just used
1506                          * 'x' for now.
1507                          */
1508                         ACL_PRIV_SET(mask, ACL_PRIV_AUTH);
1509                         break;
1510                 default:
1511                         break;
1512                 }
1513
1514         }
1515         return(mask);
1516 }
1517
1518 static int
1519 aci_list_has_attr(
1520         struct berval *list,
1521         const struct berval *attr,
1522         struct berval *val )
1523 {
1524         struct berval bv, left, right;
1525         int i;
1526
1527         for (i = 0; aci_get_part(list, i, ',', &bv) >= 0; i++) {
1528                 if (aci_get_part(&bv, 0, '=', &left) < 0
1529                         || aci_get_part(&bv, 1, '=', &right) < 0)
1530                 {
1531                         if (ber_bvstrcasecmp(attr, &bv) == 0)
1532                                 return(1);
1533                 } else if (val == NULL) {
1534                         if (ber_bvstrcasecmp(attr, &left) == 0)
1535                                 return(1);
1536                 } else {
1537                         if (ber_bvstrcasecmp(attr, &left) == 0) {
1538                                 /* this is experimental code that implements a
1539                                  * simple (prefix) match of the attribute value.
1540                                  * the ACI draft does not provide for aci's that
1541                                  * apply to specific values, but it would be
1542                                  * nice to have.  If the <attr> part of an aci's
1543                                  * rights list is of the form <attr>=<value>,
1544                                  * that means the aci applies only to attrs with
1545                                  * the given value.  Furthermore, if the attr is
1546                                  * of the form <attr>=<value>*, then <value> is
1547                                  * treated as a prefix, and the aci applies to
1548                                  * any value with that prefix.
1549                                  *
1550                                  * Ideally, this would allow r.e. matches.
1551                                  */
1552                                 if (aci_get_part(&right, 0, '*', &left) < 0
1553                                         || right.bv_len <= left.bv_len)
1554                                 {
1555                                         if (ber_bvstrcasecmp(val, &right) == 0)
1556                                                 return(1);
1557                                 } else if (val->bv_len >= left.bv_len) {
1558                                         if (strncasecmp( val->bv_val, left.bv_val, left.bv_len ) == 0)
1559                                                 return(1);
1560                                 }
1561                         }
1562                 }
1563         }
1564         return(0);
1565 }
1566
1567 static slap_access_t
1568 aci_list_get_attr_rights(
1569         struct berval *list,
1570         const struct berval *attr,
1571         struct berval *val )
1572 {
1573     struct berval bv;
1574     slap_access_t mask;
1575     int i;
1576
1577         /* loop through each rights/attr pair, skip first part (action) */
1578         ACL_INIT(mask);
1579         for (i = 1; aci_get_part(list, i + 1, ';', &bv) >= 0; i += 2) {
1580                 if (aci_list_has_attr(&bv, attr, val) == 0)
1581                         continue;
1582                 if (aci_get_part(list, i, ';', &bv) < 0)
1583                         continue;
1584                 mask |= aci_list_map_rights(&bv);
1585         }
1586         return(mask);
1587 }
1588
1589 static int
1590 aci_list_get_rights(
1591         struct berval *list,
1592         const struct berval *attr,
1593         struct berval *val,
1594         slap_access_t *grant,
1595         slap_access_t *deny )
1596 {
1597     struct berval perm, actn;
1598     slap_access_t *mask;
1599     int i, found;
1600
1601         if (attr == NULL || attr->bv_len == 0
1602                         || ber_bvstrcasecmp( attr, &aci_bv_entry ) == 0) {
1603                 attr = &aci_bv_br_entry;
1604         }
1605
1606         found = 0;
1607         ACL_INIT(*grant);
1608         ACL_INIT(*deny);
1609         /* loop through each permissions clause */
1610         for (i = 0; aci_get_part(list, i, '$', &perm) >= 0; i++) {
1611                 if (aci_get_part(&perm, 0, ';', &actn) < 0)
1612                         continue;
1613                 if (ber_bvstrcasecmp( &aci_bv_grant, &actn ) == 0) {
1614                         mask = grant;
1615                 } else if (ber_bvstrcasecmp( &aci_bv_deny, &actn ) == 0) {
1616                         mask = deny;
1617                 } else {
1618                         continue;
1619                 }
1620
1621                 found = 1;
1622                 *mask |= aci_list_get_attr_rights(&perm, attr, val);
1623                 *mask |= aci_list_get_attr_rights(&perm, &aci_bv_br_all, NULL);
1624         }
1625         return(found);
1626 }
1627
1628 static int
1629 aci_group_member (
1630         struct berval *subj,
1631         struct berval *defgrpoc,
1632         struct berval *defgrpat,
1633     Backend             *be,
1634     Entry               *e,
1635     Connection          *conn,
1636     Operation           *op,
1637         regmatch_t      *matches
1638 )
1639 {
1640         struct berval subjdn;
1641         struct berval grpoc;
1642         struct berval grpat;
1643         ObjectClass *grp_oc = NULL;
1644         AttributeDescription *grp_ad = NULL;
1645         const char *text;
1646         int rc;
1647
1648         /* format of string is "group/objectClassValue/groupAttrName" */
1649         if (aci_get_part(subj, 0, '/', &subjdn) < 0) {
1650                 return(0);
1651         }
1652
1653         if (aci_get_part(subj, 1, '/', &grpoc) < 0) {
1654                 grpoc = *defgrpoc;
1655         }
1656
1657         if (aci_get_part(subj, 2, '/', &grpat) < 0) {
1658                 grpat = *defgrpat;
1659         }
1660
1661         rc = slap_bv2ad( &grpat, &grp_ad, &text );
1662         if( rc != LDAP_SUCCESS ) {
1663                 rc = 0;
1664                 goto done;
1665         }
1666         rc = 0;
1667
1668         grp_oc = oc_bvfind( &grpoc );
1669
1670         if (grp_oc != NULL && grp_ad != NULL ) {
1671                 char buf[ACL_BUF_SIZE];
1672                 struct berval bv, ndn;
1673                 bv.bv_len = sizeof( buf ) - 1;
1674                 bv.bv_val = (char *)&buf;
1675                 string_expand(&bv, &subjdn, e->e_ndn, matches);
1676                 if ( dnNormalize2(NULL, &bv, &ndn) == LDAP_SUCCESS ) {
1677                         rc = (backend_group(be, conn, op, e, &ndn, &op->o_ndn, grp_oc, grp_ad) == 0);
1678                         free( ndn.bv_val );
1679                 }
1680         }
1681
1682 done:
1683         return(rc);
1684 }
1685
1686 static int
1687 aci_mask(
1688     Backend                     *be,
1689     Connection          *conn,
1690     Operation           *op,
1691     Entry                       *e,
1692         AttributeDescription *desc,
1693     struct berval       *val,
1694     struct berval       *aci,
1695         regmatch_t              *matches,
1696         slap_access_t   *grant,
1697         slap_access_t   *deny
1698 )
1699 {
1700     struct berval bv, perms, sdn;
1701         int rc;
1702
1703
1704         assert( desc->ad_cname.bv_val != NULL );
1705
1706         /* parse an aci of the form:
1707                 oid#scope#action;rights;attr;rights;attr$action;rights;attr;rights;attr#dnType#subjectDN
1708
1709            See draft-ietf-ldapext-aci-model-04.txt section 9.1 for
1710            a full description of the format for this attribute.
1711            Differences: "this" in the draft is "self" here, and
1712            "self" and "public" is in the position of dnType.
1713
1714            For now, this routine only supports scope=entry.
1715          */
1716
1717         /* check that the aci has all 5 components */
1718         if (aci_get_part(aci, 4, '#', NULL) < 0)
1719                 return(0);
1720
1721         /* check that the aci family is supported */
1722         if (aci_get_part(aci, 0, '#', &bv) < 0)
1723                 return(0);
1724
1725         /* check that the scope is "entry" */
1726         if (aci_get_part(aci, 1, '#', &bv) < 0
1727                 || ber_bvstrcasecmp( &aci_bv_entry, &bv ) != 0)
1728         {
1729                 return(0);
1730         }
1731
1732         /* get the list of permissions clauses, bail if empty */
1733         if (aci_get_part(aci, 2, '#', &perms) <= 0)
1734                 return(0);
1735
1736         /* check if any permissions allow desired access */
1737         if (aci_list_get_rights(&perms, &desc->ad_cname, val, grant, deny) == 0)
1738                 return(0);
1739
1740         /* see if we have a DN match */
1741         if (aci_get_part(aci, 3, '#', &bv) < 0)
1742                 return(0);
1743
1744         if (aci_get_part(aci, 4, '#', &sdn) < 0)
1745                 return(0);
1746
1747         if (ber_bvstrcasecmp( &aci_bv_access_id, &bv ) == 0) {
1748                 struct berval ndn;
1749                 rc = 0;
1750                 if ( dnNormalize2(NULL, &sdn, &ndn) == LDAP_SUCCESS ) {
1751                         if (dn_match( &op->o_ndn, &ndn))
1752                                 rc = 1;
1753                         free(ndn.bv_val);
1754                 }
1755                 return (rc);
1756
1757         } else if (ber_bvstrcasecmp( &aci_bv_public, &bv ) == 0) {
1758                 return(1);
1759
1760         } else if (ber_bvstrcasecmp( &aci_bv_self, &bv ) == 0) {
1761                 if (dn_match(&op->o_ndn, &e->e_nname))
1762                         return(1);
1763
1764         } else if (ber_bvstrcasecmp( &aci_bv_dnattr, &bv ) == 0) {
1765                 Attribute *at;
1766                 AttributeDescription *ad = NULL;
1767                 const char *text;
1768
1769                 rc = slap_bv2ad( &sdn, &ad, &text );
1770
1771                 if( rc != LDAP_SUCCESS ) {
1772                         return 0;
1773                 }
1774
1775                 rc = 0;
1776
1777                 bv = op->o_ndn;
1778
1779                 for(at = attrs_find( e->e_attrs, ad );
1780                         at != NULL;
1781                         at = attrs_find( at->a_next, ad ) )
1782                 {
1783                         if (value_find( ad, at->a_vals, &bv) == 0 ) {
1784                                 rc = 1;
1785                                 break;
1786                         }
1787                 }
1788
1789                 return rc;
1790
1791
1792         } else if (ber_bvstrcasecmp( &aci_bv_group, &bv ) == 0) {
1793                 if (aci_group_member(&sdn, &aci_bv_group_class, &aci_bv_group_attr, be, e, conn, op, matches))
1794                         return(1);
1795
1796         } else if (ber_bvstrcasecmp( &aci_bv_role, &bv ) == 0) {
1797                 if (aci_group_member(&sdn, &aci_bv_role_class, &aci_bv_role_attr, be, e, conn, op, matches))
1798                         return(1);
1799
1800         } else if (ber_bvstrcasecmp( &aci_bv_set, &bv ) == 0) {
1801                 if (aci_match_set(&sdn, be, e, conn, op, 0))
1802                         return(1);
1803
1804         } else if (ber_bvstrcasecmp( &aci_bv_set_ref, &bv ) == 0) {
1805                 if (aci_match_set(&sdn, be, e, conn, op, 1))
1806                         return(1);
1807
1808         }
1809
1810         return(0);
1811 }
1812
1813 #endif  /* SLAPD_ACI_ENABLED */
1814
1815 static void
1816 string_expand(
1817         struct berval *bv,
1818         struct berval *pat,
1819         char *match,
1820         regmatch_t *matches)
1821 {
1822         ber_len_t       size;
1823         char   *sp;
1824         char   *dp;
1825         int     flag;
1826
1827         size = 0;
1828         bv->bv_val[0] = '\0';
1829         bv->bv_len--; /* leave space for lone $ */
1830
1831         flag = 0;
1832         for ( dp = bv->bv_val, sp = pat->bv_val; size < bv->bv_len &&
1833                 sp < pat->bv_val + pat->bv_len ; sp++ )
1834         {
1835                 /* did we previously see a $ */
1836                 if ( flag ) {
1837                         if ( flag == 1 && *sp == '$' ) {
1838                                 *dp++ = '$';
1839                                 size++;
1840                                 flag = 0;
1841
1842                         } else if ( flag == 1 && *sp == '{' /*'}'*/) {
1843                                 flag = 2;
1844
1845                         } else if ( *sp >= '0' && *sp <= '9' ) {
1846                                 int     n;
1847                                 int     i;
1848                                 int     l;
1849
1850                                 n = *sp - '0';
1851
1852                                 if ( flag == 2 ) {
1853                                         for ( sp++; *sp != '\0' && *sp != /*'{'*/ '}'; sp++ ) {
1854                                                 if ( *sp >= '0' && *sp <= '9' ) {
1855                                                         n = 10*n + ( *sp - '0' );
1856                                                 }
1857                                         }
1858
1859                                         if ( *sp != /*'{'*/ '}' ) {
1860                                                 /* error */
1861                                         }
1862                                 }
1863
1864                                 if ( n >= MAXREMATCHES ) {
1865
1866                                 }
1867
1868                                 *dp = '\0';
1869                                 i = matches[n].rm_so;
1870                                 l = matches[n].rm_eo;
1871                                 for ( ; size < bv->bv_len && i < l; size++, i++ ) {
1872                                         *dp++ = match[i];
1873                                 }
1874                                 *dp = '\0';
1875
1876                                 flag = 0;
1877                         }
1878                 } else {
1879                         if (*sp == '$') {
1880                                 flag = 1;
1881                         } else {
1882                                 *dp++ = *sp;
1883                                 size++;
1884                         }
1885                 }
1886         }
1887
1888         if ( flag ) {
1889                 /* must have ended with a single $ */
1890                 *dp++ = '$';
1891                 size++;
1892         }
1893
1894         *dp = '\0';
1895         bv->bv_len = size;
1896
1897 #ifdef NEW_LOGGING
1898         LDAP_LOG( ACL, DETAIL1,
1899            "string_expand:  pattern = %.*s\n", (int)pat->bv_len, pat->bv_val, 0 );
1900         LDAP_LOG( ACL, DETAIL1, "string_expand:  expanded = %s\n", bv->bv_val, 0, 0 );
1901 #else
1902         Debug( LDAP_DEBUG_TRACE, "=> string_expand: pattern:  %.*s\n", (int)pat->bv_len, pat->bv_val, 0 );
1903         Debug( LDAP_DEBUG_TRACE, "=> string_expand: expanded: %s\n", bv->bv_val, 0, 0 );
1904 #endif
1905 }
1906
1907 static int
1908 regex_matches(
1909         struct berval *pat,                     /* pattern to expand and match against */
1910         char *str,                              /* string to match against pattern */
1911         char *buf,                              /* buffer with $N expansion variables */
1912         regmatch_t *matches             /* offsets in buffer for $N expansion variables */
1913 )
1914 {
1915         regex_t re;
1916         char newbuf[ACL_BUF_SIZE];
1917         struct berval bv;
1918         int     rc;
1919
1920         bv.bv_len = sizeof(newbuf) - 1;
1921         bv.bv_val = newbuf;
1922
1923         if(str == NULL) str = "";
1924
1925         string_expand(&bv, pat, buf, matches);
1926         if (( rc = regcomp(&re, newbuf, REG_EXTENDED|REG_ICASE))) {
1927                 char error[ACL_BUF_SIZE];
1928                 regerror(rc, &re, error, sizeof(error));
1929
1930 #ifdef NEW_LOGGING
1931                 LDAP_LOG( ACL, ERR,
1932                            "regex_matches: compile( \"%s\", \"%s\") failed %s\n",
1933                            pat->bv_val, str, error  );
1934 #else
1935                 Debug( LDAP_DEBUG_TRACE,
1936                     "compile( \"%s\", \"%s\") failed %s\n",
1937                         pat->bv_val, str, error );
1938 #endif
1939                 return( 0 );
1940         }
1941
1942         rc = regexec(&re, str, 0, NULL, 0);
1943         regfree( &re );
1944
1945 #ifdef NEW_LOGGING
1946         LDAP_LOG( ACL, DETAIL2, "regex_matches: string:   %s\n", str, 0, 0 );
1947         LDAP_LOG( ACL, DETAIL2, "regex_matches: rc:     %d  %s\n",
1948                    rc, rc ? "matches" : "no matches", 0  );
1949 #else
1950         Debug( LDAP_DEBUG_TRACE,
1951             "=> regex_matches: string:   %s\n", str, 0, 0 );
1952         Debug( LDAP_DEBUG_TRACE,
1953             "=> regex_matches: rc: %d %s\n",
1954                 rc, !rc ? "matches" : "no matches", 0 );
1955 #endif
1956         return( !rc );
1957 }
1958