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

   1 /* acl.c - routines to parse and check acl's */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2004 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 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
  17  * All rights reserved.
  18  *
  19  * Redistribution and use in source and binary forms are permitted
  20  * provided that this notice is preserved and that due credit is given
  21  * to the University of Michigan at Ann Arbor. The name of the University
  22  * may not be used to endorse or promote products derived from this
  23  * software without specific prior written permission. This software
  24  * is provided ``as is'' without express or implied warranty.
  25  */
  26
  27 #include "portable.h"
  28
  29 #include <stdio.h>
  30
  31 #include <ac/regex.h>
  32 #include <ac/socket.h>
  33 #include <ac/string.h>
  34
  35 #include "slap.h"
  36 #include "sets.h"
  37 #include "lber_pvt.h"
  38
  39 #ifdef LDAP_SLAPI
  40 #include "slapi/slapi.h"
  41 #endif /* LDAPI_SLAPI */
  42
  43 #define ACL_BUF_SIZE    1024    /* use most appropriate size */
  44
  45 /*
  46  * speed up compares
  47  */
  48 static struct berval
  49         aci_bv_entry            = BER_BVC("entry"),
  50         aci_bv_children         = BER_BVC("children"),
  51         aci_bv_br_entry         = BER_BVC("[entry]"),
  52         aci_bv_br_all           = BER_BVC("[all]"),
  53         aci_bv_access_id        = BER_BVC("access-id"),
  54         aci_bv_anonymous        = BER_BVC("anonymous"),
  55         aci_bv_public           = BER_BVC("public"),
  56         aci_bv_users            = BER_BVC("users"),
  57         aci_bv_self             = BER_BVC("self"),
  58         aci_bv_dnattr           = BER_BVC("dnattr"),
  59         aci_bv_group            = BER_BVC("group"),
  60         aci_bv_role             = BER_BVC("role"),
  61         aci_bv_set              = BER_BVC("set"),
  62         aci_bv_set_ref          = BER_BVC("set-ref"),
  63         aci_bv_grant            = BER_BVC("grant"),
  64         aci_bv_deny             = BER_BVC("deny"),
  65
  66         aci_bv_ip_eq            = BER_BVC("IP="),
  67 #ifdef LDAP_PF_LOCAL
  68         aci_bv_path_eq          = BER_BVC("PATH="),
  69         aci_bv_dirsep           = BER_BVC(LDAP_DIRSEP),
  70 #endif /* LDAP_PF_LOCAL */
  71
  72         aci_bv_group_class      = BER_BVC(SLAPD_GROUP_CLASS),
  73         aci_bv_group_attr       = BER_BVC(SLAPD_GROUP_ATTR),
  74         aci_bv_role_class       = BER_BVC(SLAPD_ROLE_CLASS),
  75         aci_bv_role_attr        = BER_BVC(SLAPD_ROLE_ATTR);
  76
  77
  78 static AccessControl * acl_get(
  79         AccessControl *ac, int *count,
  80         Operation *op, Entry *e,
  81         AttributeDescription *desc,
  82         struct berval *val,
  83         int nmatches, regmatch_t *matches,
  84         AccessControlState *state );
  85
  86 static slap_control_t acl_mask(
  87         AccessControl *ac, slap_mask_t *mask,
  88         Operation *op, Entry *e,
  89         AttributeDescription *desc,
  90         struct berval *val,
  91         regmatch_t *matches,
  92         int count,
  93         AccessControlState *state );
  94
  95 #ifdef SLAPD_ACI_ENABLED
  96 static int aci_mask(
  97         Operation *op, Entry *e,
  98         AttributeDescription *desc,
  99         struct berval *val,
 100         struct berval *aci,
 101         regmatch_t *matches,
 102         slap_access_t *grant,
 103         slap_access_t *deny,
 104         struct berval *scope);
 105 #endif
 106
 107 static int      regex_matches(
 108         struct berval *pat, char *str, char *buf, regmatch_t *matches);
 109 static void     string_expand(
 110         struct berval *newbuf, struct berval *pattern,
 111         char *match, regmatch_t *matches);
 112
 113 typedef struct AciSetCookie {
 114         Operation *op;
 115         Entry *e;
 116 } AciSetCookie;
 117
 118 SLAP_SET_GATHER aci_set_gather;
 119 static int aci_match_set ( struct berval *subj, Operation *op,
 120     Entry *e, int setref );
 121
 122 /*
 123  * access_allowed - check whether op->o_ndn is allowed the requested access
 124  * to entry e, attribute attr, value val.  if val is null, access to
 125  * the whole attribute is assumed (all values).
 126  *
 127  * This routine loops through all access controls and calls
 128  * acl_mask() on each applicable access control.
 129  * The loop exits when a definitive answer is reached or
 130  * or no more controls remain.
 131  *
 132  * returns:
 133  *              0       access denied
 134  *              1       access granted
 135  *
 136  * Notes:
 137  * - can be legally called with op == NULL
 138  * - can be legally called with op->o_bd == NULL
 139  */
 140
 141 int
 142 access_allowed_mask(
 143         Operation               *op,
 144         Entry           *e,
 145         AttributeDescription    *desc,
 146         struct berval   *val,
 147         slap_access_t   access,
 148         AccessControlState *state,
 149         slap_mask_t *maskp )
 150 {
 151         int                             ret = 1;
 152         int                             count;
 153         AccessControl                   *a = NULL;
 154         Backend *be;
 155         int     be_null = 0;
 156
 157 #ifdef LDAP_DEBUG
 158         char accessmaskbuf[ACCESSMASK_MAXLEN];
 159 #endif
 160         slap_mask_t mask;
 161         slap_control_t control;
 162         const char *attr;
 163         regmatch_t matches[MAXREMATCHES];
 164         int        st_same_attr = 0;
 165         static AccessControlState state_init = ACL_STATE_INIT;
 166
 167         assert( e != NULL );
 168         assert( desc != NULL );
 169         assert( access > ACL_NONE );
 170         if ( maskp ) ACL_INVALIDATE( *maskp );
 171
 172         attr = desc->ad_cname.bv_val;
 173
 174         assert( attr != NULL );
 175
 176         if( op && op->o_is_auth_check &&
 177                 ( access == ACL_SEARCH || access == ACL_READ ))
 178         {
 179                 access = ACL_AUTH;
 180         }
 181
 182         if( state ) {
 183                 if ( state->as_vd_ad==desc) {
 184                         if ( state->as_recorded ) {
 185                                 if( state->as_recorded & ACL_STATE_RECORDED_NV &&
 186                                         val == NULL )
 187                                 {
 188                                         return state->as_result;
 189                                 } else if ( state->as_recorded & ACL_STATE_RECORDED_VD &&
 190                                         val != NULL && state->as_vd_acl == NULL )
 191                                 {
 192                                         return state->as_result;
 193                                 }
 194                         }
 195                         st_same_attr = 1;
 196                 } else {
 197                         *state = state_init;
 198                 }
 199
 200                 state->as_vd_ad=desc;
 201         }
 202
 203 #ifdef NEW_LOGGING
 204         LDAP_LOG( ACL, ENTRY,
 205                 "access_allowed: %s access to \"%s\" \"%s\" requested\n",
 206                 access2str( access ), e->e_dn, attr );
 207 #else
 208         Debug( LDAP_DEBUG_ACL,
 209                 "=> access_allowed: %s access to \"%s\" \"%s\" requested\n",
 210             access2str( access ), e->e_dn, attr );
 211 #endif
 212
 213         if ( op == NULL ) {
 214                 /* no-op call */
 215                 goto done;
 216         }
 217
 218         be = op->o_bd;
 219         if ( be == NULL ) {
 220                 be = &backends[0];
 221                 be_null = 1;
 222 #ifdef LDAP_DEVEL
 223                 /*
 224                  * FIXME: experimental; use first backend rules
 225                  * iff there is no global_acl (ITS#3100) */
 226                 if ( global_acl == NULL )
 227 #endif
 228                 {
 229                         op->o_bd = be;
 230                 }
 231         }
 232         assert( be != NULL );
 233
 234 #ifdef LDAP_SLAPI
 235         if ( op->o_pb != NULL ) {
 236                 ret = slapi_int_access_allowed( op, e, desc, val, access, state );
 237                 if ( ret == 0 ) {
 238                         /* ACL plugin denied access */
 239                         goto done;
 240                 }
 241         }
 242 #endif /* LDAP_SLAPI */
 243
 244         /* grant database root access */
 245         if ( be != NULL && be_isroot( op ) ) {
 246 #ifdef NEW_LOGGING
 247                 LDAP_LOG( ACL, INFO,
 248                         "access_allowed: conn %lu root access granted\n",
 249                         op->o_connid, 0, 0 );
 250 #else
 251                 Debug( LDAP_DEBUG_ACL,
 252                     "<= root access granted\n",
 253                         0, 0, 0 );
 254 #endif
 255                 if ( maskp ) {
 256                         mask = ACL_LVL_WRITE;
 257                 }
 258
 259                 goto done;
 260         }
 261
 262         /*
 263          * no-user-modification operational attributes are ignored
 264          * by ACL_WRITE checking as any found here are not provided
 265          * by the user
 266          */
 267         if ( access >= ACL_WRITE && is_at_no_user_mod( desc->ad_type )
 268                 && desc != slap_schema.si_ad_entry
 269                 && desc != slap_schema.si_ad_children )
 270         {
 271 #ifdef NEW_LOGGING
 272                 LDAP_LOG( ACL, DETAIL1,
 273                         "access_allowed: conn %lu NoUserMod Operational attribute: %s "
 274                         "access granted\n", op->o_connid, attr , 0 );
 275 #else
 276                 Debug( LDAP_DEBUG_ACL, "NoUserMod Operational attribute:"
 277                         " %s access granted\n",
 278                         attr, 0, 0 );
 279 #endif
 280                 goto done;
 281         }
 282
 283         /* use backend default access if no backend acls */
 284         if( be != NULL && be->be_acl == NULL ) {
 285 #ifdef NEW_LOGGING
 286                 LDAP_LOG( ACL, DETAIL1,
 287                         "access_allowed: backend default %s access %s to \"%s\"\n",
 288                     access2str( access ),
 289                     be->be_dfltaccess >= access ? "granted" : "denied",
 290                         op->o_dn.bv_val ? op->o_dn.bv_val : "(anonymous)" );
 291 #else
 292                 Debug( LDAP_DEBUG_ACL,
 293                         "=> access_allowed: backend default %s access %s to \"%s\"\n",
 294                         access2str( access ),
 295                         be->be_dfltaccess >= access ? "granted" : "denied",
 296                         op->o_dn.bv_val ? op->o_dn.bv_val : "(anonymous)" );
 297 #endif
 298                 ret = be->be_dfltaccess >= access;
 299
 300                 if ( maskp ) {
 301                         int     i;
 302
 303                         mask = ACL_PRIV_LEVEL;
 304                         for ( i = ACL_NONE; i <= be->be_dfltaccess; i++ ) {
 305                                 mask |= ACL_ACCESS2PRIV( i );
 306                         }
 307                 }
 308
 309                 goto done;
 310
 311 #ifdef notdef
 312         /* be is always non-NULL */
 313         /* use global default access if no global acls */
 314         } else if ( be == NULL && global_acl == NULL ) {
 315 #ifdef NEW_LOGGING
 316                 LDAP_LOG( ACL, DETAIL1,
 317                         "access_allowed: global default %s access %s to \"%s\"\n",
 318                     access2str( access ),
 319                     global_default_access >= access ? "granted" : "denied",
 320                         op->o_dn.bv_val );
 321 #else
 322                 Debug( LDAP_DEBUG_ACL,
 323                         "=> access_allowed: global default %s access %s to \"%s\"\n",
 324                         access2str( access ),
 325                         global_default_access >= access ? "granted" : "denied", op->o_dn.bv_val );
 326 #endif
 327                 ret = global_default_access >= access;
 328
 329                 if ( maskp ) {
 330                         int     i;
 331
 332                         mask = ACL_PRIV_LEVEL;
 333                         for ( i = ACL_NONE; i <= global_default_access; i++ ) {
 334                                 mask |= ACL_ACCESS2PRIV( i );
 335                         }
 336                 }
 337
 338                 goto done;
 339 #endif
 340         }
 341
 342         ret = 0;
 343         control = ACL_BREAK;
 344
 345         if( st_same_attr ) {
 346                 assert( state->as_vd_acl != NULL );
 347
 348                 a = state->as_vd_acl;
 349                 count = state->as_vd_acl_count;
 350                 if ( !ACL_IS_INVALID( state->as_vd_acl_mask )) {
 351                         mask = state->as_vd_acl_mask;
 352                         AC_MEMCPY( matches, state->as_vd_acl_matches, sizeof(matches) );
 353                         goto vd_access;
 354                 }
 355
 356         } else {
 357                 if ( state ) state->as_vi_acl = NULL;
 358                 a = NULL;
 359                 ACL_INIT(mask);
 360                 count = 0;
 361                 memset(matches, '\0', sizeof(matches));
 362         }
 363
 364         while((a = acl_get( a, &count, op, e, desc, val,
 365                 MAXREMATCHES, matches, state )) != NULL)
 366         {
 367                 int i;
 368
 369                 for (i = 0; i < MAXREMATCHES && matches[i].rm_so > 0; i++) {
 370 #ifdef NEW_LOGGING
 371                         LDAP_LOG( ACL, DETAIL1,
 372                                 "access_allowed: match[%d]:  %d %d ",
 373                             i, (int)matches[i].rm_so, (int)matches[i].rm_eo );
 374 #else
 375                         Debug( LDAP_DEBUG_ACL, "=> match[%d]: %d %d ", i,
 376                             (int)matches[i].rm_so, (int)matches[i].rm_eo );
 377 #endif
 378                         if( matches[i].rm_so <= matches[0].rm_eo ) {
 379                                 int n;
 380                                 for ( n = matches[i].rm_so; n < matches[i].rm_eo; n++) {
 381                                         Debug( LDAP_DEBUG_ACL, "%c", e->e_ndn[n], 0, 0 );
 382                                 }
 383                         }
 384 #ifdef NEW_LOGGING
 385                         LDAP_LOG( ACL, ARGS, "\n" , 0, 0, 0 );
 386 #else
 387                         Debug( LDAP_DEBUG_ARGS, "\n", 0, 0, 0 );
 388 #endif
 389                 }
 390
 391                 if (state) {
 392                         if (state->as_vi_acl == a && (state->as_recorded & ACL_STATE_RECORDED_NV)) {
 393                                 Debug( LDAP_DEBUG_ACL, "access_allowed: result from state (%s)\n", attr, 0, 0 );
 394                                 ret = state->as_result;
 395                                 goto done;
 396                         } else {
 397                                 Debug( LDAP_DEBUG_ACL, "access_allowed: no res from state (%s)\n", attr, 0, 0);
 398                         }
 399                 }
 400
 401 vd_access:
 402                 control = acl_mask( a, &mask, op,
 403                         e, desc, val, matches, count, state );
 404
 405                 if ( control != ACL_BREAK ) {
 406                         break;
 407                 }
 408
 409                 memset(matches, '\0', sizeof(matches));
 410         }
 411
 412         if ( ACL_IS_INVALID( mask ) ) {
 413 #ifdef NEW_LOGGING
 414                 LDAP_LOG( ACL, DETAIL1,
 415                         "access_allowed: conn %lu \"%s\" (%s) invalid!\n",
 416                     op->o_connid, e->e_dn, attr );
 417 #else
 418                 Debug( LDAP_DEBUG_ACL,
 419                         "=> access_allowed: \"%s\" (%s) invalid!\n",
 420                         e->e_dn, attr, 0 );
 421 #endif
 422                 ACL_INIT(mask);
 423
 424         } else if ( control == ACL_BREAK ) {
 425 #ifdef NEW_LOGGING
 426                 LDAP_LOG( ACL, DETAIL1,
 427                         "access_allowed: conn %lu        no more rules\n", op->o_connid, 0,0 );
 428 #else
 429                 Debug( LDAP_DEBUG_ACL,
 430                         "=> access_allowed: no more rules\n", 0, 0, 0);
 431 #endif
 432
 433                 goto done;
 434         }
 435
 436 #ifdef NEW_LOGGING
 437         LDAP_LOG( ACL, ENTRY,
 438                 "access_allowed: %s access %s by %s\n",
 439                 access2str( access ), ACL_GRANT( mask, access ) ? "granted" : "denied",
 440                 accessmask2str( mask, accessmaskbuf ) );
 441 #else
 442         Debug( LDAP_DEBUG_ACL,
 443                 "=> access_allowed: %s access %s by %s\n",
 444                 access2str( access ),
 445                 ACL_GRANT(mask, access) ? "granted" : "denied",
 446                 accessmask2str( mask, accessmaskbuf ) );
 447 #endif
 448
 449         ret = ACL_GRANT(mask, access);
 450
 451 done:
 452         if( state != NULL ) {
 453                 /* If not value-dependent, save ACL in case of more attrs */
 454                 if ( !(state->as_recorded & ACL_STATE_RECORDED_VD) ) {
 455                         state->as_vi_acl = a;
 456                         state->as_result = ret;
 457                 }
 458                 state->as_recorded |= ACL_STATE_RECORDED;
 459         }
 460         if (be_null) op->o_bd = NULL;
 461         if ( maskp ) *maskp = mask;
 462         return ret;
 463 }
 464
 465
 466 /*
 467  * acl_get - return the acl applicable to entry e, attribute
 468  * attr.  the acl returned is suitable for use in subsequent calls to
 469  * acl_access_allowed().
 470  */
 471
 472 static AccessControl *
 473 acl_get(
 474         AccessControl *a,
 475         int                     *count,
 476         Operation       *op,
 477         Entry           *e,
 478         AttributeDescription *desc,
 479         struct berval   *val,
 480         int                     nmatch,
 481         regmatch_t      *matches,
 482         AccessControlState *state )
 483 {
 484         const char *attr;
 485         int dnlen, patlen;
 486         AccessControl *prev;
 487
 488         assert( e != NULL );
 489         assert( count != NULL );
 490         assert( desc != NULL );
 491
 492         attr = desc->ad_cname.bv_val;
 493
 494         assert( attr != NULL );
 495
 496         if( a == NULL ) {
 497                 if( op->o_bd == NULL ) {
 498                         a = global_acl;
 499                 } else {
 500                         a = op->o_bd->be_acl;
 501                 }
 502                 prev = NULL;
 503
 504                 assert( a != NULL );
 505
 506         } else {
 507                 prev = a;
 508                 a = a->acl_next;
 509         }
 510
 511         dnlen = e->e_nname.bv_len;
 512
 513         for ( ; a != NULL; a = a->acl_next ) {
 514                 (*count) ++;
 515
 516                 if ( a->acl_dn_pat.bv_len || ( a->acl_dn_style != ACL_STYLE_REGEX )) {
 517                         if ( a->acl_dn_style == ACL_STYLE_REGEX ) {
 518 #ifdef NEW_LOGGING
 519                                 LDAP_LOG( ACL, DETAIL1,
 520                                         "acl_get: dnpat [%d] %s nsub: %d\n",
 521                                         *count, a->acl_dn_pat.bv_val,
 522                                         (int) a->acl_dn_re.re_nsub );
 523 #else
 524                                 Debug( LDAP_DEBUG_ACL, "=> dnpat: [%d] %s nsub: %d\n",
 525                                         *count, a->acl_dn_pat.bv_val, (int) a->acl_dn_re.re_nsub );
 526 #endif
 527                                 if (regexec(&a->acl_dn_re, e->e_ndn, nmatch, matches, 0))
 528                                         continue;
 529
 530                         } else {
 531 #ifdef NEW_LOGGING
 532                                 LDAP_LOG( ACL, DETAIL1, "acl_get: dn [%d] %s\n",
 533                                            *count, a->acl_dn_pat.bv_val, 0 );
 534 #else
 535                                 Debug( LDAP_DEBUG_ACL, "=> dn: [%d] %s\n",
 536                                         *count, a->acl_dn_pat.bv_val, 0 );
 537 #endif
 538                                 patlen = a->acl_dn_pat.bv_len;
 539                                 if ( dnlen < patlen )
 540                                         continue;
 541
 542                                 if ( a->acl_dn_style == ACL_STYLE_BASE ) {
 543                                         /* base dn -- entire object DN must match */
 544                                         if ( dnlen != patlen )
 545                                                 continue;
 546
 547                                 } else if ( a->acl_dn_style == ACL_STYLE_ONE ) {
 548                                         int     rdnlen = -1, sep = 0;
 549
 550                                         if ( dnlen <= patlen )
 551                                                 continue;
 552
 553                                         if ( patlen > 0 ) {
 554                                                 if ( !DN_SEPARATOR( e->e_ndn[dnlen - patlen - 1] ) )
 555                                                         continue;
 556                                                 sep = 1;
 557                                         }
 558
 559                                         rdnlen = dn_rdnlen( NULL, &e->e_nname );
 560                                         if ( rdnlen != dnlen - patlen - sep )
 561                                                 continue;
 562
 563                                 } else if ( a->acl_dn_style == ACL_STYLE_SUBTREE ) {
 564                                         if ( dnlen > patlen && !DN_SEPARATOR( e->e_ndn[dnlen - patlen - 1] ) )
 565                                                 continue;
 566
 567                                 } else if ( a->acl_dn_style == ACL_STYLE_CHILDREN ) {
 568                                         if ( dnlen <= patlen )
 569                                                 continue;
 570                                         if ( !DN_SEPARATOR( e->e_ndn[dnlen - patlen - 1] ) )
 571                                                 continue;
 572                                 }
 573
 574                                 if ( strcmp( a->acl_dn_pat.bv_val, e->e_ndn + dnlen - patlen ) != 0 )
 575                                         continue;
 576                         }
 577
 578 #ifdef NEW_LOGGING
 579                         LDAP_LOG( ACL, DETAIL1,
 580                                 "acl_get: [%d] matched\n", *count, 0, 0 );
 581 #else
 582                         Debug( LDAP_DEBUG_ACL, "=> acl_get: [%d] matched\n",
 583                                 *count, 0, 0 );
 584 #endif
 585                 }
 586
 587                 if ( a->acl_attrs && !ad_inlist( desc, a->acl_attrs ) ) {
 588                         matches[0].rm_so = matches[0].rm_eo = -1;
 589                         continue;
 590                 }
 591
 592                 /* Is this ACL only for a specific value? */
 593                 if ( a->acl_attrval.bv_len ) {
 594                         if ( val == NULL ) {
 595                                 continue;
 596                         }
 597
 598                         if( state && !( state->as_recorded & ACL_STATE_RECORDED_VD )) {
 599                                 state->as_recorded |= ACL_STATE_RECORDED_VD;
 600                                 state->as_vd_acl = prev;
 601                                 state->as_vd_acl_count = *count;
 602                                 state->as_vd_access = a->acl_access;
 603                                 state->as_vd_access_count = 1;
 604                                 ACL_INVALIDATE( state->as_vd_acl_mask );
 605                         }
 606
 607                         if ( a->acl_attrval_style == ACL_STYLE_REGEX ) {
 608 #ifdef NEW_LOGGING
 609                                 LDAP_LOG( ACL, DETAIL1,
 610                                         "acl_get: valpat %s\n",
 611                                         a->acl_attrval.bv_val, 0, 0 );
 612 #else
 613                                 Debug( LDAP_DEBUG_ACL,
 614                                         "acl_get: valpat %s\n",
 615                                         a->acl_attrval.bv_val, 0, 0 );
 616 #endif
 617                                 if (regexec(&a->acl_attrval_re, val->bv_val, 0, NULL, 0))
 618                                         continue;
 619                         } else {
 620                                 int match = 0;
 621                                 const char *text;
 622 #ifdef NEW_LOGGING
 623                                 LDAP_LOG( ACL, DETAIL1,
 624                                         "acl_get: val %s\n",
 625                                         a->acl_attrval.bv_val, 0, 0 );
 626 #else
 627                                 Debug( LDAP_DEBUG_ACL,
 628                                         "acl_get: val %s\n",
 629                                         a->acl_attrval.bv_val, 0, 0 );
 630 #endif
 631
 632                                 if ( a->acl_attrs[0].an_desc->ad_type->sat_syntax != slap_schema.si_syn_distinguishedName ) {
 633                                         if (value_match( &match, desc,
 634                                                 desc->ad_type->sat_equality, 0,
 635                                                 val, &a->acl_attrval, &text ) != LDAP_SUCCESS ||
 636                                                         match )
 637                                                 continue;
 638
 639                                 } else {
 640                                         int             patlen, vdnlen;
 641
 642                                         patlen = a->acl_attrval.bv_len;
 643                                         vdnlen = val->bv_len;
 644
 645                                         if ( vdnlen < patlen )
 646                                                 continue;
 647
 648                                         if ( a->acl_dn_style == ACL_STYLE_BASE ) {
 649                                                 if ( vdnlen > patlen )
 650                                                         continue;
 651
 652                                         } else if ( a->acl_dn_style == ACL_STYLE_ONE ) {
 653                                                 int rdnlen = -1;
 654
 655                                                 if ( !DN_SEPARATOR( val->bv_val[vdnlen - patlen - 1] ) )
 656                                                         continue;
 657
 658                                                 rdnlen = dn_rdnlen( NULL, val );
 659                                                 if ( rdnlen != vdnlen - patlen - 1 )
 660                                                         continue;
 661
 662                                         } else if ( a->acl_dn_style == ACL_STYLE_SUBTREE ) {
 663                                                 if ( vdnlen > patlen && !DN_SEPARATOR( val->bv_val[vdnlen - patlen - 1] ) )
 664                                                         continue;
 665
 666                                         } else if ( a->acl_dn_style == ACL_STYLE_CHILDREN ) {
 667                                                 if ( vdnlen <= patlen )
 668                                                         continue;
 669
 670                                                 if ( !DN_SEPARATOR( val->bv_val[vdnlen - patlen - 1] ) )
 671                                                         continue;
 672                                         }
 673
 674                                         if ( strcmp( a->acl_attrval.bv_val, val->bv_val + vdnlen - patlen ))
 675                                                 continue;
 676                                 }
 677                         }
 678                 }
 679
 680                 if ( a->acl_filter != NULL ) {
 681                         ber_int_t rc = test_filter( NULL, e, a->acl_filter );
 682                         if ( rc != LDAP_COMPARE_TRUE ) {
 683                                 continue;
 684                         }
 685                 }
 686
 687 #ifdef NEW_LOGGING
 688                 LDAP_LOG( ACL, DETAIL1,
 689                         "acl_get: [%d] attr %s\n", *count, attr ,0 );
 690 #else
 691                 Debug( LDAP_DEBUG_ACL, "=> acl_get: [%d] attr %s\n",
 692                        *count, attr, 0);
 693 #endif
 694                 return a;
 695         }
 696
 697 #ifdef NEW_LOGGING
 698         LDAP_LOG( ACL, RESULTS, "acl_get: done.\n", 0, 0, 0 );
 699 #else
 700         Debug( LDAP_DEBUG_ACL, "<= acl_get: done.\n", 0, 0, 0 );
 701 #endif
 702         return( NULL );
 703 }
 704
 705 /*
 706  * Record value-dependent access control state
 707  */
 708 #define ACL_RECORD_VALUE_STATE do { \
 709                 if( state && !( state->as_recorded & ACL_STATE_RECORDED_VD )) { \
 710                         state->as_recorded |= ACL_STATE_RECORDED_VD; \
 711                         state->as_vd_acl = a; \
 712                         AC_MEMCPY( state->as_vd_acl_matches, matches, \
 713                                 sizeof( state->as_vd_acl_matches )) ; \
 714                         state->as_vd_acl_count = count; \
 715                         state->as_vd_access = b; \
 716                         state->as_vd_access_count = i; \
 717                 } \
 718         } while( 0 )
 719
 720 /*
 721  * acl_mask - modifies mask based upon the given acl and the
 722  * requested access to entry e, attribute attr, value val.  if val
 723  * is null, access to the whole attribute is assumed (all values).
 724  *
 725  * returns      0       access NOT allowed
 726  *              1       access allowed
 727  */
 728
 729 static slap_control_t
 730 acl_mask(
 731         AccessControl   *a,
 732         slap_mask_t *mask,
 733         Operation       *op,
 734         Entry           *e,
 735         AttributeDescription *desc,
 736         struct berval   *val,
 737         regmatch_t      *matches,
 738         int     count,
 739         AccessControlState *state )
 740 {
 741         int             i, odnlen, patlen;
 742         Access  *b;
 743 #ifdef LDAP_DEBUG
 744         char accessmaskbuf[ACCESSMASK_MAXLEN];
 745         char accessmaskbuf1[ACCESSMASK_MAXLEN];
 746 #endif
 747         const char *attr;
 748
 749         assert( a != NULL );
 750         assert( mask != NULL );
 751         assert( desc != NULL );
 752
 753         attr = desc->ad_cname.bv_val;
 754
 755         assert( attr != NULL );
 756
 757 #ifdef NEW_LOGGING
 758         LDAP_LOG( ACL, ENTRY,
 759                 "acl_mask: conn %lu  access to entry \"%s\", attr \"%s\" requested\n",
 760                 op->o_connid, e->e_dn, attr );
 761
 762         LDAP_LOG( ACL, ARGS,
 763                 " to %s by \"%s\", (%s) \n", val ? "value" : "all values",
 764                 op->o_ndn.bv_val ? op->o_ndn.bv_val : "",
 765                 accessmask2str( *mask, accessmaskbuf ) );
 766 #else
 767         Debug( LDAP_DEBUG_ACL,
 768                 "=> acl_mask: access to entry \"%s\", attr \"%s\" requested\n",
 769                 e->e_dn, attr, 0 );
 770
 771         Debug( LDAP_DEBUG_ACL,
 772                 "=> acl_mask: to %s by \"%s\", (%s) \n",
 773                 val ? "value" : "all values",
 774                 op->o_ndn.bv_val ?  op->o_ndn.bv_val : "",
 775                 accessmask2str( *mask, accessmaskbuf ) );
 776 #endif
 777
 778
 779         if( state && ( state->as_recorded & ACL_STATE_RECORDED_VD )
 780                 && state->as_vd_acl == a )
 781         {
 782                 b = state->as_vd_access;
 783                 i = state->as_vd_access_count;
 784
 785         } else {
 786                 b = a->acl_access;
 787                 i = 1;
 788         }
 789
 790         for ( ; b != NULL; b = b->a_next, i++ ) {
 791                 slap_mask_t oldmask, modmask;
 792
 793                 ACL_INVALIDATE( modmask );
 794
 795                 /* AND <who> clauses */
 796                 if ( b->a_dn_pat.bv_len != 0 ) {
 797 #ifdef NEW_LOGGING
 798                         LDAP_LOG( ACL, DETAIL1,
 799                                 "acl_mask: conn %lu  check a_dn_pat: %s\n",
 800                                 op->o_connid, b->a_dn_pat.bv_val ,0 );
 801 #else
 802                         Debug( LDAP_DEBUG_ACL, "<= check a_dn_pat: %s\n",
 803                                 b->a_dn_pat.bv_val, 0, 0);
 804 #endif
 805                         /*
 806                          * if access applies to the entry itself, and the
 807                          * user is bound as somebody in the same namespace as
 808                          * the entry, OR the given dn matches the dn pattern
 809                          */
 810                         if ( bvmatch( &b->a_dn_pat, &aci_bv_anonymous ) ) {
 811                                 if ( op->o_ndn.bv_len != 0 ) {
 812                                         continue;
 813                                 }
 814
 815                         } else if ( bvmatch( &b->a_dn_pat, &aci_bv_users ) ) {
 816                                 if ( op->o_ndn.bv_len == 0 ) {
 817                                         continue;
 818                                 }
 819
 820                         } else if ( bvmatch( &b->a_dn_pat, &aci_bv_self ) ) {
 821                                 if ( op->o_ndn.bv_len == 0 ) {
 822                                         continue;
 823                                 }
 824
 825                                 if ( e->e_dn == NULL || !dn_match( &e->e_nname, &op->o_ndn ) ) {
 826                                         continue;
 827                                 }
 828
 829                         } else if ( b->a_dn_style == ACL_STYLE_REGEX ) {
 830                                 if ( !ber_bvccmp( &b->a_dn_pat, '*' ) ) {
 831                                         int ret = regex_matches( &b->a_dn_pat,
 832                                                 op->o_ndn.bv_val, e->e_ndn, matches );
 833
 834                                         if( ret == 0 ) {
 835                                                 continue;
 836                                         }
 837                                 }
 838
 839                         } else {
 840                                 struct berval pat;
 841                                 int got_match = 0;
 842
 843                                 if ( e->e_dn == NULL )
 844                                         continue;
 845
 846                                 if ( b->a_dn_expand ) {
 847                                         struct berval bv;
 848                                         char buf[ACL_BUF_SIZE];
 849
 850                                         bv.bv_len = sizeof( buf ) - 1;
 851                                         bv.bv_val = buf;
 852
 853                                         string_expand(&bv, &b->a_dn_pat,
 854                                                         e->e_ndn, matches);
 855                                         if ( dnNormalize(0, NULL, NULL, &bv, &pat, op->o_tmpmemctx ) != LDAP_SUCCESS ) {
 856                                                 /* did not expand to a valid dn */
 857                                                 continue;
 858                                         }
 859                                 } else {
 860                                         pat = b->a_dn_pat;
 861                                 }
 862
 863                                 patlen = pat.bv_len;
 864                                 odnlen = op->o_ndn.bv_len;
 865                                 if ( odnlen < patlen ) {
 866                                         goto dn_match_cleanup;
 867
 868                                 }
 869
 870                                 if ( b->a_dn_style == ACL_STYLE_BASE ) {
 871                                         /* base dn -- entire object DN must match */
 872                                         if ( odnlen != patlen ) {
 873                                                 goto dn_match_cleanup;
 874                                         }
 875
 876                                 } else if ( b->a_dn_style == ACL_STYLE_ONE ) {
 877                                         int rdnlen = -1;
 878
 879                                         if ( odnlen <= patlen ) {
 880                                                 goto dn_match_cleanup;
 881                                         }
 882
 883                                         if ( !DN_SEPARATOR( op->o_ndn.bv_val[odnlen - patlen - 1] ) ) {
 884                                                 goto dn_match_cleanup;
 885                                         }
 886
 887                                         rdnlen = dn_rdnlen( NULL, &op->o_ndn );
 888                                         if ( rdnlen != odnlen - patlen - 1 ) {
 889                                                 goto dn_match_cleanup;
 890                                         }
 891
 892                                 } else if ( b->a_dn_style == ACL_STYLE_SUBTREE ) {
 893                                         if ( odnlen > patlen && !DN_SEPARATOR( op->o_ndn.bv_val[odnlen - patlen - 1] ) ) {
 894                                                 goto dn_match_cleanup;
 895                                         }
 896
 897                                 } else if ( b->a_dn_style == ACL_STYLE_CHILDREN ) {
 898                                         if ( odnlen <= patlen ) {
 899                                                 goto dn_match_cleanup;
 900                                         }
 901
 902                                         if ( !DN_SEPARATOR( op->o_ndn.bv_val[odnlen - patlen - 1] ) ) {
 903                                                 goto dn_match_cleanup;
 904                                         }
 905                                 }
 906
 907                                 got_match = !strcmp( pat.bv_val, op->o_ndn.bv_val + odnlen - patlen );
 908
 909 dn_match_cleanup:;
 910                                 if ( pat.bv_val != b->a_dn_pat.bv_val ) {
 911                                         free( pat.bv_val );
 912                                 }
 913
 914                                 if ( !got_match ) {
 915                                         continue;
 916                                 }
 917                         }
 918                 }
 919
 920                 if ( b->a_sockurl_pat.bv_len ) {
 921                         if ( ! op->o_conn->c_listener ) {
 922                                 continue;
 923                         }
 924 #ifdef NEW_LOGGING
 925                         LDAP_LOG( ACL, DETAIL1,
 926                                    "acl_mask: conn %lu  check a_sockurl_pat: %s\n",
 927                                    op->o_connid, b->a_sockurl_pat.bv_val , 0 );
 928 #else
 929                         Debug( LDAP_DEBUG_ACL, "<= check a_sockurl_pat: %s\n",
 930                                 b->a_sockurl_pat.bv_val, 0, 0 );
 931 #endif
 932
 933                         if ( !ber_bvccmp( &b->a_sockurl_pat, '*' ) ) {
 934                                 if ( b->a_sockurl_style == ACL_STYLE_REGEX) {
 935                                         if (!regex_matches( &b->a_sockurl_pat, op->o_conn->c_listener_url.bv_val,
 936                                                         e->e_ndn, matches ) )
 937                                         {
 938                                                 continue;
 939                                         }
 940
 941                                 } else if ( b->a_sockurl_style == ACL_STYLE_EXPAND ) {
 942                                         struct berval   bv;
 943                                         char buf[ACL_BUF_SIZE];
 944
 945                                         bv.bv_len = sizeof( buf ) - 1;
 946                                         bv.bv_val = buf;
 947                                         string_expand( &bv, &b->a_sockurl_pat, e->e_ndn, matches );
 948
 949                                         if ( ber_bvstrcasecmp( &bv, &op->o_conn->c_listener_url ) != 0 ) {
 950                                                 continue;
 951                                         }
 952
 953                                 } else {
 954                                         if ( ber_bvstrcasecmp( &b->a_sockurl_pat, &op->o_conn->c_listener_url ) != 0 )
 955                                                 continue;
 956                                 }
 957                         }
 958                 }
 959
 960                 if ( b->a_domain_pat.bv_len ) {
 961                         if ( !op->o_conn->c_peer_domain.bv_val ) {
 962                                 continue;
 963                         }
 964 #ifdef NEW_LOGGING
 965                         LDAP_LOG( ACL, DETAIL1,
 966                                    "acl_mask: conn %lu  check a_domain_pat: %s\n",
 967                                    op->o_connid, b->a_domain_pat.bv_val , 0 );
 968 #else
 969                         Debug( LDAP_DEBUG_ACL, "<= check a_domain_pat: %s\n",
 970                                 b->a_domain_pat.bv_val, 0, 0 );
 971 #endif
 972                         if ( !ber_bvccmp( &b->a_domain_pat, '*' ) ) {
 973                                 if ( b->a_domain_style == ACL_STYLE_REGEX) {
 974                                         if (!regex_matches( &b->a_domain_pat, op->o_conn->c_peer_domain.bv_val,
 975                                                         e->e_ndn, matches ) )
 976                                         {
 977                                                 continue;
 978                                         }
 979                                 } else {
 980                                         char buf[ACL_BUF_SIZE];
 981
 982                                         struct berval   cmp = op->o_conn->c_peer_domain;
 983                                         struct berval   pat = b->a_domain_pat;
 984
 985                                         if ( b->a_domain_expand ) {
 986                                                 struct berval bv;
 987
 988                                                 bv.bv_len = sizeof(buf) - 1;
 989                                                 bv.bv_val = buf;
 990
 991                                                 string_expand(&bv, &b->a_domain_pat, e->e_ndn, matches);
 992                                                 pat = bv;
 993                                         }
 994
 995                                         if ( b->a_domain_style == ACL_STYLE_SUBTREE ) {
 996                                                 int offset = cmp.bv_len - pat.bv_len;
 997                                                 if ( offset < 0 ) {
 998                                                         continue;
 999                                                 }
1000
1001                                                 if ( offset == 1 || ( offset > 1 && cmp.bv_val[ offset - 1 ] != '.' ) ) {
1002                                                         continue;
1003                                                 }
1004
1005                                                 /* trim the domain */
1006                                                 cmp.bv_val = &cmp.bv_val[ offset ];
1007                                                 cmp.bv_len -= offset;
1008                                         }
1009
1010                                         if ( ber_bvstrcasecmp( &pat, &cmp ) != 0 ) {
1011                                                 continue;
1012                                         }
1013                                 }
1014                         }
1015                 }
1016
1017                 if ( b->a_peername_pat.bv_len ) {
1018                         if ( !op->o_conn->c_peer_name.bv_val ) {
1019                                 continue;
1020                         }
1021 #ifdef NEW_LOGGING
1022                         LDAP_LOG( ACL, DETAIL1,
1023                                    "acl_mask: conn %lu  check a_peername_path: %s\n",
1024                                    op->o_connid, b->a_peername_pat.bv_val , 0 );
1025 #else
1026                         Debug( LDAP_DEBUG_ACL, "<= check a_peername_path: %s\n",
1027                                 b->a_peername_pat.bv_val, 0, 0 );
1028 #endif
1029                         if ( !ber_bvccmp( &b->a_peername_pat, '*' ) ) {
1030                                 if ( b->a_peername_style == ACL_STYLE_REGEX ) {
1031                                         if (!regex_matches( &b->a_peername_pat, op->o_conn->c_peer_name.bv_val,
1032                                                         e->e_ndn, matches ) )
1033                                         {
1034                                                 continue;
1035                                         }
1036
1037                                 } else {
1038                                         /* try exact match */
1039                                         if ( b->a_peername_style == ACL_STYLE_BASE ) {
1040                                                 if ( ber_bvstrcasecmp( &b->a_peername_pat, &op->o_conn->c_peer_name ) != 0 ) {
1041                                                         continue;
1042                                                 }
1043
1044                                         } else if ( b->a_peername_style == ACL_STYLE_EXPAND ) {
1045                                                 struct berval   bv;
1046                                                 char buf[ACL_BUF_SIZE];
1047
1048                                                 bv.bv_len = sizeof( buf ) - 1;
1049                                                 bv.bv_val = buf;
1050                                                 string_expand( &bv, &b->a_peername_pat, e->e_ndn, matches );
1051
1052                                                 if ( ber_bvstrcasecmp( &bv, &op->o_conn->c_peer_name ) != 0 ) {
1053                                                         continue;
1054                                                 }
1055
1056                                         /* extract IP and try exact match */
1057                                         } else if ( b->a_peername_style == ACL_STYLE_IP ) {
1058                                                 char            *port;
1059                                                 char            buf[] = "255.255.255.255";
1060                                                 struct berval   ip;
1061                                                 unsigned long   addr;
1062                                                 int             port_number = -1;
1063
1064                                                 if ( strncasecmp( op->o_conn->c_peer_name.bv_val,
1065                                                                         aci_bv_ip_eq.bv_val, aci_bv_ip_eq.bv_len ) != 0 )
1066                                                         continue;
1067
1068                                                 ip.bv_val = op->o_conn->c_peer_name.bv_val + aci_bv_ip_eq.bv_len;
1069                                                 ip.bv_len = op->o_conn->c_peer_name.bv_len - aci_bv_ip_eq.bv_len;
1070
1071                                                 port = strrchr( ip.bv_val, ':' );
1072                                                 if ( port ) {
1073                                                         char    *next;
1074
1075                                                         ip.bv_len = port - ip.bv_val;
1076                                                         ++port;
1077                                                         port_number = strtol( port, &next, 10 );
1078                                                         if ( next[0] != '\0' )
1079                                                                 continue;
1080                                                 }
1081
1082                                                 /* the port check can be anticipated here */
1083                                                 if ( b->a_peername_port != -1 && port_number != b->a_peername_port )
1084                                                         continue;
1085
1086                                                 /* address longer than expected? */
1087                                                 if ( ip.bv_len >= sizeof(buf) )
1088                                                         continue;
1089
1090                                                 AC_MEMCPY( buf, ip.bv_val, ip.bv_len );
1091                                                 buf[ ip.bv_len ] = '\0';
1092
1093                                                 addr = inet_addr( buf );
1094
1095                                                 /* unable to convert? */
1096                                                 if ( addr == (unsigned long)(-1) )
1097                                                         continue;
1098
1099                                                 if ( (addr & b->a_peername_mask) != b->a_peername_addr )
1100                                                         continue;
1101
1102 #ifdef LDAP_PF_LOCAL
1103                                         /* extract path and try exact match */
1104                                         } else if ( b->a_peername_style == ACL_STYLE_PATH ) {
1105                                                 struct berval path;
1106
1107                                                 if ( strncmp( op->o_conn->c_peer_name.bv_val,
1108                                                                         aci_bv_path_eq.bv_val, aci_bv_path_eq.bv_len ) != 0 )
1109                                                         continue;
1110
1111                                                 path.bv_val = op->o_conn->c_peer_name.bv_val + aci_bv_path_eq.bv_len;
1112                                                 path.bv_len = op->o_conn->c_peer_name.bv_len - aci_bv_path_eq.bv_len;
1113
1114                                                 if ( ber_bvcmp( &b->a_peername_pat, &path ) != 0 )
1115                                                         continue;
1116
1117 #endif /* LDAP_PF_LOCAL */
1118
1119                                         /* exact match (very unlikely...) */
1120                                         } else if ( ber_bvcmp( &op->o_conn->c_peer_name, &b->a_peername_pat ) != 0 ) {
1121                                                         continue;
1122                                         }
1123                                 }
1124                         }
1125                 }
1126
1127                 if ( b->a_sockname_pat.bv_len ) {
1128                         if ( !op->o_conn->c_sock_name.bv_val ) {
1129                                 continue;
1130                         }
1131 #ifdef NEW_LOGGING
1132                         LDAP_LOG( ACL, DETAIL1,
1133                                    "acl_mask: conn %lu  check a_sockname_path: %s\n",
1134                                    op->o_connid, b->a_sockname_pat.bv_val , 0 );
1135 #else
1136                         Debug( LDAP_DEBUG_ACL, "<= check a_sockname_path: %s\n",
1137                                 b->a_sockname_pat.bv_val, 0, 0 );
1138 #endif
1139                         if ( !ber_bvccmp( &b->a_sockname_pat, '*' ) ) {
1140                                 if ( b->a_sockname_style == ACL_STYLE_REGEX) {
1141                                         if (!regex_matches( &b->a_sockname_pat, op->o_conn->c_sock_name.bv_val,
1142                                                         e->e_ndn, matches ) )
1143                                         {
1144                                                 continue;
1145                                         }
1146
1147                                 } else if ( b->a_sockname_style == ACL_STYLE_EXPAND ) {
1148                                         struct berval   bv;
1149                                         char buf[ACL_BUF_SIZE];
1150
1151                                         bv.bv_len = sizeof( buf ) - 1;
1152                                         bv.bv_val = buf;
1153                                         string_expand( &bv, &b->a_sockname_pat, e->e_ndn, matches );
1154
1155                                         if ( ber_bvstrcasecmp( &bv, &op->o_conn->c_sock_name ) != 0 ) {
1156                                                 continue;
1157                                         }
1158
1159                                 } else {
1160                                         if ( ber_bvstrcasecmp( &b->a_sockname_pat, &op->o_conn->c_sock_name ) != 0 )
1161                                                 continue;
1162                                 }
1163                         }
1164                 }
1165
1166                 if ( b->a_dn_at != NULL ) {
1167                         Attribute       *at;
1168                         struct berval   bv;
1169                         int rc, match = 0;
1170                         const char *text;
1171                         const char *attr = b->a_dn_at->ad_cname.bv_val;
1172
1173                         assert( attr != NULL );
1174
1175                         if ( op->o_ndn.bv_len == 0 ) {
1176                                 continue;
1177                         }
1178
1179 #ifdef NEW_LOGGING
1180                         LDAP_LOG( ACL, DETAIL1,
1181                                    "acl_mask: conn %lu  check a_dn_pat: %s\n",
1182                                    op->o_connid, attr , 0 );
1183 #else
1184                         Debug( LDAP_DEBUG_ACL, "<= check a_dn_at: %s\n",
1185                                 attr, 0, 0);
1186 #endif
1187                         bv = op->o_ndn;
1188
1189                         /* see if asker is listed in dnattr */
1190                         for( at = attrs_find( e->e_attrs, b->a_dn_at );
1191                                 at != NULL;
1192                                 at = attrs_find( at->a_next, b->a_dn_at ) )
1193                         {
1194                                 if( value_find_ex( b->a_dn_at,
1195                                         SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
1196                                                 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
1197                                         at->a_nvals,
1198                                         &bv, op->o_tmpmemctx ) == 0 )
1199                                 {
1200                                         /* found it */
1201                                         match = 1;
1202                                         break;
1203                                 }
1204                         }
1205
1206                         if( match ) {
1207                                 /* have a dnattr match. if this is a self clause then
1208                                  * the target must also match the op dn.
1209                                  */
1210                                 if ( b->a_dn_self ) {
1211                                         /* check if the target is an attribute. */
1212                                         if ( val == NULL ) continue;
1213
1214                                         /* target is attribute, check if the attribute value
1215                                          * is the op dn.
1216                                          */
1217                                         rc = value_match( &match, b->a_dn_at,
1218                                                 b->a_dn_at->ad_type->sat_equality, 0,
1219                                                 val, &bv, &text );
1220                                         /* on match error or no match, fail the ACL clause */
1221                                         if (rc != LDAP_SUCCESS || match != 0 )
1222                                                 continue;
1223                                 }
1224                         } else {
1225                                 /* no dnattr match, check if this is a self clause */
1226                                 if ( ! b->a_dn_self )
1227                                         continue;
1228
1229                                 ACL_RECORD_VALUE_STATE;
1230
1231                                 /* this is a self clause, check if the target is an
1232                                  * attribute.
1233                                  */
1234                                 if ( val == NULL )
1235                                         continue;
1236
1237                                 /* target is attribute, check if the attribute value
1238                                  * is the op dn.
1239                                  */
1240                                 rc = value_match( &match, b->a_dn_at,
1241                                         b->a_dn_at->ad_type->sat_equality, 0,
1242                                         val, &bv, &text );
1243
1244                                 /* on match error or no match, fail the ACL clause */
1245                                 if (rc != LDAP_SUCCESS || match != 0 )
1246                                         continue;
1247                         }
1248                 }
1249
1250                 if ( b->a_group_pat.bv_len ) {
1251                         struct berval bv;
1252                         struct berval ndn = BER_BVNULL;
1253                         int rc;
1254
1255                         if ( op->o_ndn.bv_len == 0 ) {
1256                                 continue;
1257                         }
1258
1259                         /* b->a_group is an unexpanded entry name, expanded it should be an
1260                          * entry with objectclass group* and we test to see if odn is one of
1261                          * the values in the attribute group
1262                          */
1263                         /* see if asker is listed in dnattr */
1264                         if ( b->a_group_style == ACL_STYLE_EXPAND ) {
1265                                 char buf[ACL_BUF_SIZE];
1266                                 bv.bv_len = sizeof(buf) - 1;
1267                                 bv.bv_val = buf;
1268
1269                                 string_expand( &bv, &b->a_group_pat, e->e_ndn, matches );
1270                                 if ( dnNormalize( 0, NULL, NULL, &bv, &ndn, op->o_tmpmemctx ) != LDAP_SUCCESS ) {
1271                                         /* did not expand to a valid dn */
1272                                         continue;
1273                                 }
1274
1275                                 bv = ndn;
1276
1277                         } else {
1278                                 bv = b->a_group_pat;
1279                         }
1280
1281                         rc = backend_group( op, e, &bv, &op->o_ndn,
1282                                 b->a_group_oc, b->a_group_at );
1283
1284                         if ( ndn.bv_val ) free( ndn.bv_val );
1285
1286                         if ( rc != 0 ) {
1287                                 continue;
1288                         }
1289                 }
1290
1291                 if ( b->a_set_pat.bv_len != 0 ) {
1292                         struct berval bv;
1293                         char buf[ACL_BUF_SIZE];
1294                         if( b->a_set_style == ACL_STYLE_REGEX ){
1295                                 bv.bv_len = sizeof(buf) - 1;
1296                                 bv.bv_val = buf;
1297                                 string_expand( &bv, &b->a_set_pat, e->e_ndn, matches );
1298                         }else{
1299                                 bv = b->a_set_pat;
1300                         }
1301                         if (aci_match_set( &bv, op, e, 0 ) == 0) {
1302                                 continue;
1303                         }
1304                 }
1305
1306                 if ( b->a_authz.sai_ssf ) {
1307 #ifdef NEW_LOGGING
1308                         LDAP_LOG( ACL, DETAIL1,
1309                                 "acl_mask: conn %lu  check a_authz.sai_ssf: ACL %u > OP %u\n",
1310                                 op->o_connid, b->a_authz.sai_ssf, op->o_ssf  );
1311 #else
1312                         Debug( LDAP_DEBUG_ACL, "<= check a_authz.sai_ssf: ACL %u > OP %u\n",
1313                                 b->a_authz.sai_ssf, op->o_ssf, 0 );
1314 #endif
1315                         if ( b->a_authz.sai_ssf >  op->o_ssf ) {
1316                                 continue;
1317                         }
1318                 }
1319
1320                 if ( b->a_authz.sai_transport_ssf ) {
1321 #ifdef NEW_LOGGING
1322                         LDAP_LOG( ACL, DETAIL1,
1323                                 "acl_mask: conn %lu  check a_authz.sai_transport_ssf: "
1324                                 "ACL %u > OP %u\n",
1325                                 op->o_connid, b->a_authz.sai_transport_ssf,
1326                                 op->o_transport_ssf  );
1327 #else
1328                         Debug( LDAP_DEBUG_ACL,
1329                                 "<= check a_authz.sai_transport_ssf: ACL %u > OP %u\n",
1330                                 b->a_authz.sai_transport_ssf, op->o_transport_ssf, 0 );
1331 #endif
1332                         if ( b->a_authz.sai_transport_ssf >  op->o_transport_ssf ) {
1333                                 continue;
1334                         }
1335                 }
1336
1337                 if ( b->a_authz.sai_tls_ssf ) {
1338 #ifdef NEW_LOGGING
1339                         LDAP_LOG( ACL, DETAIL1,
1340                                 "acl_mask: conn %lu  check a_authz.sai_tls_ssf: ACL %u > "
1341                                 "OP %u\n",
1342                                 op->o_connid, b->a_authz.sai_tls_ssf, op->o_tls_ssf  );
1343 #else
1344                         Debug( LDAP_DEBUG_ACL,
1345                                 "<= check a_authz.sai_tls_ssf: ACL %u > OP %u\n",
1346                                 b->a_authz.sai_tls_ssf, op->o_tls_ssf, 0 );
1347 #endif
1348                         if ( b->a_authz.sai_tls_ssf >  op->o_tls_ssf ) {
1349                                 continue;
1350                         }
1351                 }
1352
1353                 if ( b->a_authz.sai_sasl_ssf ) {
1354 #ifdef NEW_LOGGING
1355                         LDAP_LOG( ACL, DETAIL1,
1356                            "acl_mask: conn %lu check a_authz.sai_sasl_ssf: "
1357                            "ACL %u > OP %u\n",
1358                                 op->o_connid, b->a_authz.sai_sasl_ssf, op->o_sasl_ssf );
1359 #else
1360                         Debug( LDAP_DEBUG_ACL,
1361                                 "<= check a_authz.sai_sasl_ssf: ACL %u > OP %u\n",
1362                                 b->a_authz.sai_sasl_ssf, op->o_sasl_ssf, 0 );
1363 #endif
1364                         if ( b->a_authz.sai_sasl_ssf >  op->o_sasl_ssf ) {
1365                                 continue;
1366                         }
1367                 }
1368
1369 #ifdef SLAPD_ACI_ENABLED
1370                 if ( b->a_aci_at != NULL ) {
1371                         Attribute       *at;
1372                         slap_access_t grant, deny, tgrant, tdeny;
1373                         struct berval parent_ndn, old_parent_ndn;
1374                         BerVarray bvals = NULL;
1375                         int ret,stop;
1376
1377                         /* this case works different from the others above.
1378                          * since aci's themselves give permissions, we need
1379                          * to first check b->a_access_mask, the ACL's access level.
1380                          */
1381
1382                         if ( e->e_nname.bv_len == 0 ) {
1383                                 /* no ACIs in the root DSE */
1384                                 continue;
1385                         }
1386
1387                         /* first check if the right being requested
1388                          * is allowed by the ACL clause.
1389                          */
1390                         if ( ! ACL_GRANT( b->a_access_mask, *mask ) ) {
1391                                 continue;
1392                         }
1393                         /* start out with nothing granted, nothing denied */
1394                         ACL_INIT(tgrant);
1395                         ACL_INIT(tdeny);
1396
1397                         /* get the aci attribute */
1398                         at = attr_find( e->e_attrs, b->a_aci_at );
1399                         if ( at != NULL ) {
1400                                 ACL_RECORD_VALUE_STATE;
1401                                 /* the aci is an multi-valued attribute.  The
1402                                 * rights are determined by OR'ing the individual
1403                                 * rights given by the acis.
1404                                 */
1405                                 for ( i = 0; at->a_vals[i].bv_val != NULL; i++ ) {
1406                                         if (aci_mask( op,
1407                                                 e, desc, val,
1408                                                 &at->a_nvals[i],
1409                                                 matches, &grant, &deny,  &aci_bv_entry ) != 0)
1410                                         {
1411                                                 tgrant |= grant;
1412                                                 tdeny |= deny;
1413                                         }
1414                                 }
1415                                 Debug(LDAP_DEBUG_ACL, "<= aci_mask grant %s deny %s\n",
1416                                           accessmask2str(tgrant,accessmaskbuf),
1417                                           accessmask2str(tdeny, accessmaskbuf1), 0);
1418
1419                         }
1420                         /* If the entry level aci didn't contain anything valid for the
1421                          * current operation, climb up the tree and evaluate the
1422                          * acis with scope set to subtree
1423                          */
1424                         if( (tgrant == ACL_PRIV_NONE) && (tdeny == ACL_PRIV_NONE) ){
1425                                 dnParent(&(e->e_nname), &parent_ndn);
1426                                 while ( parent_ndn.bv_val != old_parent_ndn.bv_val ){
1427                                         old_parent_ndn = parent_ndn;
1428                                         Debug(LDAP_DEBUG_ACL, "checking ACI of %s\n", parent_ndn.bv_val, 0, 0);
1429                                         ret=backend_attribute(op, NULL, &parent_ndn, b->a_aci_at, &bvals);
1430                                         switch(ret){
1431                                                 case LDAP_SUCCESS :
1432                                                         if(bvals){
1433                                                                 for( i = 0; bvals[i].bv_val != NULL; i++){
1434                                                                         ACL_RECORD_VALUE_STATE;
1435                                                                         if (aci_mask(op, e, desc, val, &bvals[i], matches,
1436                                                                                         &grant, &deny, &aci_bv_children) != 0) {
1437                                                                                 tgrant |= grant;
1438                                                                                 tdeny |= deny;
1439                                                                                 /* evaluation stops as soon as either a "deny" or a
1440                                                                                  * "grant" directive matches.
1441                                                                                  */
1442                                                                                 if( (tgrant != ACL_PRIV_NONE) || (tdeny != ACL_PRIV_NONE) ){
1443                                                                                         stop=1;
1444                                                                                 }
1445                                                                         }
1446                                                                         Debug(LDAP_DEBUG_ACL, "<= aci_mask grant %s deny %s\n",
1447                                                                                 accessmask2str(tgrant,accessmaskbuf),
1448                                                                                 accessmask2str(tdeny, accessmaskbuf1), 0);
1449                                                                 }
1450                                                         }
1451                                                         stop=0;
1452                                                         break;
1453                                                 case LDAP_NO_SUCH_ATTRIBUTE:
1454                                                         /* just go on if the aci-Attribute is not present in
1455                                                          * the current entry
1456                                                          */
1457                                                         Debug(LDAP_DEBUG_ACL, "no such attribute\n", 0, 0, 0);
1458                                                         stop=0;
1459                                                         break;
1460                                                 case LDAP_NO_SUCH_OBJECT:
1461                                                         /* We have reached the base object */
1462                                                         Debug(LDAP_DEBUG_ACL, "no such object\n", 0, 0, 0);
1463                                                         stop=1;
1464                                                         break;
1465                                                 default:
1466                                                         stop=1;
1467                                                         break;
1468                                         }
1469                                         if(stop){
1470                                                 break;
1471                                         }
1472                                         dnParent(&old_parent_ndn, &parent_ndn);
1473                                 }
1474                         }
1475
1476
1477                         /* remove anything that the ACL clause does not allow */
1478                         tgrant &= b->a_access_mask & ACL_PRIV_MASK;
1479                         tdeny &= ACL_PRIV_MASK;
1480
1481                         /* see if we have anything to contribute */
1482                         if( ACL_IS_INVALID(tgrant) && ACL_IS_INVALID(tdeny) ) {
1483                                 continue;
1484                         }
1485
1486                         /* this could be improved by changing acl_mask so that it can deal with
1487                          * by clauses that return grant/deny pairs.  Right now, it does either
1488                          * additive or subtractive rights, but not both at the same time.  So,
1489                          * we need to combine the grant/deny pair into a single rights mask in
1490                          * a smart way:  if either grant or deny is "empty", then we use the
1491                          * opposite as is, otherwise we remove any denied rights from the grant
1492                          * rights mask and construct an additive mask.
1493                          */
1494                         if (ACL_IS_INVALID(tdeny)) {
1495                                 modmask = tgrant | ACL_PRIV_ADDITIVE;
1496
1497                         } else if (ACL_IS_INVALID(tgrant)) {
1498                                 modmask = tdeny | ACL_PRIV_SUBSTRACTIVE;
1499
1500                         } else {
1501                                 modmask = (tgrant & ~tdeny) | ACL_PRIV_ADDITIVE;
1502                         }
1503
1504                 } else
1505 #endif
1506                 {
1507                         modmask = b->a_access_mask;
1508                 }
1509
1510 #ifdef NEW_LOGGING
1511                 LDAP_LOG( ACL, RESULTS,
1512                            "acl_mask: [%d] applying %s (%s)\n",
1513                            i, accessmask2str( modmask, accessmaskbuf),
1514                            b->a_type == ACL_CONTINUE ? "continue" : b->a_type == ACL_BREAK
1515                            ? "break" : "stop"  );
1516 #else
1517                 Debug( LDAP_DEBUG_ACL,
1518                         "<= acl_mask: [%d] applying %s (%s)\n",
1519                         i, accessmask2str( modmask, accessmaskbuf ),
1520                         b->a_type == ACL_CONTINUE
1521                                 ? "continue"
1522                                 : b->a_type == ACL_BREAK
1523                                         ? "break"
1524                                         : "stop" );
1525 #endif
1526                 /* save old mask */
1527                 oldmask = *mask;
1528
1529                 if( ACL_IS_ADDITIVE(modmask) ) {
1530                         /* add privs */
1531                         ACL_PRIV_SET( *mask, modmask );
1532
1533                         /* cleanup */
1534                         ACL_PRIV_CLR( *mask, ~ACL_PRIV_MASK );
1535
1536                 } else if( ACL_IS_SUBTRACTIVE(modmask) ) {
1537                         /* substract privs */
1538                         ACL_PRIV_CLR( *mask, modmask );
1539
1540                         /* cleanup */
1541                         ACL_PRIV_CLR( *mask, ~ACL_PRIV_MASK );
1542
1543                 } else {
1544                         /* assign privs */
1545                         *mask = modmask;
1546                 }
1547
1548 #ifdef NEW_LOGGING
1549                 LDAP_LOG( ACL, DETAIL1,
1550                            "acl_mask: conn %lu  [%d] mask: %s\n",
1551                            op->o_connid, i, accessmask2str( *mask, accessmaskbuf)  );
1552 #else
1553                 Debug( LDAP_DEBUG_ACL,
1554                         "<= acl_mask: [%d] mask: %s\n",
1555                         i, accessmask2str(*mask, accessmaskbuf), 0 );
1556 #endif
1557
1558                 if( b->a_type == ACL_CONTINUE ) {
1559                         continue;
1560
1561                 } else if ( b->a_type == ACL_BREAK ) {
1562                         return ACL_BREAK;
1563
1564                 } else {
1565                         return ACL_STOP;
1566                 }
1567         }
1568
1569         /* implicit "by * none" clause */
1570         ACL_INIT(*mask);
1571
1572 #ifdef NEW_LOGGING
1573         LDAP_LOG( ACL, RESULTS,
1574                    "acl_mask: conn %lu  no more <who> clauses, returning %d (stop)\n",
1575                    op->o_connid, accessmask2str( *mask, accessmaskbuf) , 0 );
1576 #else
1577         Debug( LDAP_DEBUG_ACL,
1578                 "<= acl_mask: no more <who> clauses, returning %s (stop)\n",
1579                 accessmask2str(*mask, accessmaskbuf), 0, 0 );
1580 #endif
1581         return ACL_STOP;
1582 }
1583
1584 /*
1585  * acl_check_modlist - check access control on the given entry to see if
1586  * it allows the given modifications by the user associated with op.
1587  * returns      1       if mods allowed ok
1588  *                      0       mods not allowed
1589  */
1590
1591 int
1592 acl_check_modlist(
1593         Operation       *op,
1594         Entry   *e,
1595         Modifications   *mlist
1596 )
1597 {
1598         struct berval *bv;
1599         AccessControlState state = ACL_STATE_INIT;
1600         Backend *be;
1601         int be_null = 0;
1602         int ret = 1; /* default is access allowed */
1603
1604         be = op->o_bd;
1605         if ( be == NULL ) {
1606                 be = &backends[0];
1607                 be_null = 1;
1608                 op->o_bd = be;
1609         }
1610         assert( be != NULL );
1611
1612         /* short circuit root database access */
1613         if ( be_isroot( op ) ) {
1614 #ifdef NEW_LOGGING
1615                 LDAP_LOG( ACL, DETAIL1,
1616                            "acl_check_modlist: conn %lu  access granted to root user\n",
1617                            op->o_connid, 0, 0 );
1618 #else
1619                 Debug( LDAP_DEBUG_ACL,
1620                         "<= acl_access_allowed: granted to database root\n",
1621                     0, 0, 0 );
1622 #endif
1623                 goto done;
1624         }
1625
1626         /* use backend default access if no backend acls */
1627         if( op->o_bd != NULL && op->o_bd->be_acl == NULL ) {
1628 #ifdef NEW_LOGGING
1629                 LDAP_LOG( ACL, DETAIL1,
1630                         "acl_check_modlist: backend default %s access %s to \"%s\"\n",
1631                         access2str( ACL_WRITE ),
1632                         op->o_bd->be_dfltaccess >= ACL_WRITE ? "granted" : "denied",
1633                         op->o_dn.bv_val  );
1634 #else
1635                 Debug( LDAP_DEBUG_ACL,
1636                         "=> access_allowed: backend default %s access %s to \"%s\"\n",
1637                         access2str( ACL_WRITE ),
1638                         op->o_bd->be_dfltaccess >= ACL_WRITE ? "granted" : "denied", op->o_dn.bv_val );
1639 #endif
1640                 ret = (op->o_bd->be_dfltaccess >= ACL_WRITE);
1641                 goto done;
1642         }
1643
1644         for ( ; mlist != NULL; mlist = mlist->sml_next ) {
1645                 /*
1646                  * no-user-modification operational attributes are ignored
1647                  * by ACL_WRITE checking as any found here are not provided
1648                  * by the user
1649                  */
1650                 if ( is_at_no_user_mod( mlist->sml_desc->ad_type ) ) {
1651 #ifdef NEW_LOGGING
1652                         LDAP_LOG( ACL, DETAIL1,
1653                                    "acl_check_modlist: conn %lu  no-user-mod %s: modify access granted\n",
1654                                    op->o_connid, mlist->sml_desc->ad_cname.bv_val , 0 );
1655 #else
1656                         Debug( LDAP_DEBUG_ACL, "acl: no-user-mod %s:"
1657                                 " modify access granted\n",
1658                                 mlist->sml_desc->ad_cname.bv_val, 0, 0 );
1659 #endif
1660                         continue;
1661                 }
1662
1663                 switch ( mlist->sml_op ) {
1664                 case LDAP_MOD_REPLACE:
1665                         /*
1666                          * We must check both permission to delete the whole
1667                          * attribute and permission to add the specific attributes.
1668                          * This prevents abuse from selfwriters.
1669                          */
1670                         if ( ! access_allowed( op, e,
1671                                 mlist->sml_desc, NULL, ACL_WRITE, &state ) )
1672                         {
1673                                 ret = 0;
1674                                 goto done;
1675                         }
1676
1677                         if ( mlist->sml_values == NULL ) break;
1678
1679                         /* fall thru to check value to add */
1680
1681                 case LDAP_MOD_ADD:
1682                         assert( mlist->sml_values != NULL );
1683
1684                         for ( bv = mlist->sml_nvalues
1685                                         ? mlist->sml_nvalues : mlist->sml_values;
1686                                 bv->bv_val != NULL; bv++ )
1687                         {
1688                                 if ( ! access_allowed( op, e,
1689                                         mlist->sml_desc, bv, ACL_WRITE, &state ) )
1690                                 {
1691                                         ret = 0;
1692                                         goto done;
1693                                 }
1694                         }
1695                         break;
1696
1697                 case LDAP_MOD_DELETE:
1698                         if ( mlist->sml_values == NULL ) {
1699                                 if ( ! access_allowed( op, e,
1700                                         mlist->sml_desc, NULL, ACL_WRITE, NULL ) )
1701                                 {
1702                                         ret = 0;
1703                                         goto done;
1704                                 }
1705                                 break;
1706                         }
1707                         for ( bv = mlist->sml_nvalues
1708                                         ? mlist->sml_nvalues : mlist->sml_values;
1709                                 bv->bv_val != NULL; bv++ )
1710                         {
1711                                 if ( ! access_allowed( op, e,
1712                                         mlist->sml_desc, bv, ACL_WRITE, &state ) )
1713                                 {
1714                                         ret = 0;
1715                                         goto done;
1716                                 }
1717                         }
1718                         break;
1719
1720                 case SLAP_MOD_SOFTADD:
1721                         /* allow adding attribute via modrdn thru */
1722                         break;
1723
1724                 default:
1725                         assert( 0 );
1726                         /* not reached */
1727                         ret = 0;
1728                         break;
1729                 }
1730         }
1731
1732 done:
1733         if (be_null) op->o_bd = NULL;
1734         return( ret );
1735 }
1736
1737 static int
1738 aci_get_part(
1739         struct berval *list,
1740         int ix,
1741         char sep,
1742         struct berval *bv )
1743 {
1744         int len;
1745         char *p;
1746
1747         if (bv) {
1748                 bv->bv_len = 0;
1749                 bv->bv_val = NULL;
1750         }
1751         len = list->bv_len;
1752         p = list->bv_val;
1753         while (len >= 0 && --ix >= 0) {
1754                 while (--len >= 0 && *p++ != sep) ;
1755         }
1756         while (len >= 0 && *p == ' ') {
1757                 len--;
1758                 p++;
1759         }
1760         if (len < 0)
1761                 return(-1);
1762
1763         if (!bv)
1764                 return(0);
1765
1766         bv->bv_val = p;
1767         while (--len >= 0 && *p != sep) {
1768                 bv->bv_len++;
1769                 p++;
1770         }
1771         while (bv->bv_len > 0 && *--p == ' ')
1772                 bv->bv_len--;
1773         return(bv->bv_len);
1774 }
1775
1776 BerVarray
1777 aci_set_gather (SetCookie *cookie, struct berval *name, struct berval *attr)
1778 {
1779         AciSetCookie *cp = (AciSetCookie *)cookie;
1780         BerVarray bvals = NULL;
1781         struct berval ndn;
1782
1783         /* this routine needs to return the bervals instead of
1784          * plain strings, since syntax is not known.  It should
1785          * also return the syntax or some "comparison cookie".
1786          */
1787
1788         if (dnNormalize(0, NULL, NULL, name, &ndn, cp->op->o_tmpmemctx) == LDAP_SUCCESS) {
1789                 const char *text;
1790                 AttributeDescription *desc = NULL;
1791                 if (slap_bv2ad(attr, &desc, &text) == LDAP_SUCCESS) {
1792                         backend_attribute(cp->op,
1793                                 cp->e, &ndn, desc, &bvals);
1794                 }
1795                 slap_sl_free(ndn.bv_val, cp->op->o_tmpmemctx);
1796         }
1797         return(bvals);
1798 }
1799
1800 static int
1801 aci_match_set (
1802         struct berval *subj,
1803         Operation *op,
1804         Entry *e,
1805         int setref
1806 )
1807 {
1808         struct berval set = BER_BVNULL;
1809         int rc = 0;
1810         AciSetCookie cookie;
1811
1812         if (setref == 0) {
1813                 ber_dupbv_x( &set, subj, op->o_tmpmemctx );
1814         } else {
1815                 struct berval subjdn, ndn = BER_BVNULL;
1816                 struct berval setat;
1817                 BerVarray bvals;
1818                 const char *text;
1819                 AttributeDescription *desc = NULL;
1820
1821                 /* format of string is "entry/setAttrName" */
1822                 if (aci_get_part(subj, 0, '/', &subjdn) < 0) {
1823                         return(0);
1824                 }
1825
1826                 if ( aci_get_part(subj, 1, '/', &setat) < 0 ) {
1827                         setat.bv_val = SLAPD_ACI_SET_ATTR;
1828                         setat.bv_len = sizeof(SLAPD_ACI_SET_ATTR)-1;
1829                 }
1830
1831                 if ( setat.bv_val != NULL ) {
1832                         /*
1833                          * NOTE: dnNormalize honors the ber_len field
1834                          * as the length of the dn to be normalized
1835                          */
1836                         if ( dnNormalize(0, NULL, NULL, &subjdn, &ndn, op->o_tmpmemctx) == LDAP_SUCCESS
1837                                 && slap_bv2ad(&setat, &desc, &text) == LDAP_SUCCESS )
1838                         {
1839                                 backend_attribute(op, e,
1840                                         &ndn, desc, &bvals);
1841                                 if ( bvals != NULL ) {
1842                                         if ( bvals[0].bv_val != NULL ) {
1843                                                 int i;
1844                                                 set = bvals[0];
1845                                                 bvals[0].bv_val = NULL;
1846                                                 for (i=1;bvals[i].bv_val;i++);
1847                                                 bvals[0].bv_val = bvals[i-1].bv_val;
1848                                                 bvals[i-1].bv_val = NULL;
1849                                         }
1850                                         ber_bvarray_free_x(bvals, op->o_tmpmemctx);
1851                                 }
1852                         }
1853                         if (ndn.bv_val)
1854                                 free(ndn.bv_val);
1855                 }
1856         }
1857
1858         if (set.bv_val != NULL) {
1859                 cookie.op = op;
1860                 cookie.e = e;
1861                 rc = (slap_set_filter(aci_set_gather, (SetCookie *)&cookie, &set,
1862                         &op->o_ndn, &e->e_nname, NULL) > 0);
1863                 slap_sl_free(set.bv_val, op->o_tmpmemctx);
1864         }
1865         return(rc);
1866 }
1867
1868 #ifdef SLAPD_ACI_ENABLED
1869 static int
1870 aci_list_map_rights(
1871         struct berval *list )
1872 {
1873         struct berval bv;
1874         slap_access_t mask;
1875         int i;
1876
1877         ACL_INIT(mask);
1878         for (i = 0; aci_get_part(list, i, ',', &bv) >= 0; i++) {
1879                 if (bv.bv_len <= 0)
1880                         continue;
1881                 switch (*bv.bv_val) {
1882                 case 'c':
1883                         ACL_PRIV_SET(mask, ACL_PRIV_COMPARE);
1884                         break;
1885                 case 's':
1886                         /* **** NOTE: draft-ietf-ldapext-aci-model-0.3.txt defines
1887                          * the right 's' to mean "set", but in the examples states
1888                          * that the right 's' means "search".  The latter definition
1889                          * is used here.
1890                          */
1891                         ACL_PRIV_SET(mask, ACL_PRIV_SEARCH);
1892                         break;
1893                 case 'r':
1894                         ACL_PRIV_SET(mask, ACL_PRIV_READ);
1895                         break;
1896                 case 'w':
1897                         ACL_PRIV_SET(mask, ACL_PRIV_WRITE);
1898                         break;
1899                 case 'x':
1900                         /* **** NOTE: draft-ietf-ldapext-aci-model-0.3.txt does not
1901                          * define any equivalent to the AUTH right, so I've just used
1902                          * 'x' for now.
1903                          */
1904                         ACL_PRIV_SET(mask, ACL_PRIV_AUTH);
1905                         break;
1906                 default:
1907                         break;
1908                 }
1909
1910         }
1911         return(mask);
1912 }
1913
1914 static int
1915 aci_list_has_attr(
1916         struct berval *list,
1917         const struct berval *attr,
1918         struct berval *val )
1919 {
1920         struct berval bv, left, right;
1921         int i;
1922
1923         for (i = 0; aci_get_part(list, i, ',', &bv) >= 0; i++) {
1924                 if (aci_get_part(&bv, 0, '=', &left) < 0
1925                         || aci_get_part(&bv, 1, '=', &right) < 0)
1926                 {
1927                         if (ber_bvstrcasecmp(attr, &bv) == 0)
1928                                 return(1);
1929                 } else if (val == NULL) {
1930                         if (ber_bvstrcasecmp(attr, &left) == 0)
1931                                 return(1);
1932                 } else {
1933                         if (ber_bvstrcasecmp(attr, &left) == 0) {
1934                                 /* this is experimental code that implements a
1935                                  * simple (prefix) match of the attribute value.
1936                                  * the ACI draft does not provide for aci's that
1937                                  * apply to specific values, but it would be
1938                                  * nice to have.  If the <attr> part of an aci's
1939                                  * rights list is of the form <attr>=<value>,
1940                                  * that means the aci applies only to attrs with
1941                                  * the given value.  Furthermore, if the attr is
1942                                  * of the form <attr>=<value>*, then <value> is
1943                                  * treated as a prefix, and the aci applies to
1944                                  * any value with that prefix.
1945                                  *
1946                                  * Ideally, this would allow r.e. matches.
1947                                  */
1948                                 if (aci_get_part(&right, 0, '*', &left) < 0
1949                                         || right.bv_len <= left.bv_len)
1950                                 {
1951                                         if (ber_bvstrcasecmp(val, &right) == 0)
1952                                                 return(1);
1953                                 } else if (val->bv_len >= left.bv_len) {
1954                                         if (strncasecmp( val->bv_val, left.bv_val, left.bv_len ) == 0)
1955                                                 return(1);
1956                                 }
1957                         }
1958                 }
1959         }
1960         return(0);
1961 }
1962
1963 static slap_access_t
1964 aci_list_get_attr_rights(
1965         struct berval *list,
1966         const struct berval *attr,
1967         struct berval *val )
1968 {
1969     struct berval bv;
1970     slap_access_t mask;
1971     int i;
1972
1973         /* loop through each rights/attr pair, skip first part (action) */
1974         ACL_INIT(mask);
1975         for (i = 1; aci_get_part(list, i + 1, ';', &bv) >= 0; i += 2) {
1976                 if (aci_list_has_attr(&bv, attr, val) == 0)
1977                         continue;
1978                 if (aci_get_part(list, i, ';', &bv) < 0)
1979                         continue;
1980                 mask |= aci_list_map_rights(&bv);
1981         }
1982         return(mask);
1983 }
1984
1985 static int
1986 aci_list_get_rights(
1987         struct berval *list,
1988         const struct berval *attr,
1989         struct berval *val,
1990         slap_access_t *grant,
1991         slap_access_t *deny )
1992 {
1993     struct berval perm, actn;
1994     slap_access_t *mask;
1995     int i, found;
1996
1997         if (attr == NULL || attr->bv_len == 0
1998                         || ber_bvstrcasecmp( attr, &aci_bv_entry ) == 0) {
1999                 attr = &aci_bv_br_entry;
2000         }
2001
2002         found = 0;
2003         ACL_INIT(*grant);
2004         ACL_INIT(*deny);
2005         /* loop through each permissions clause */
2006         for (i = 0; aci_get_part(list, i, '$', &perm) >= 0; i++) {
2007                 if (aci_get_part(&perm, 0, ';', &actn) < 0)
2008                         continue;
2009                 if (ber_bvstrcasecmp( &aci_bv_grant, &actn ) == 0) {
2010                         mask = grant;
2011                 } else if (ber_bvstrcasecmp( &aci_bv_deny, &actn ) == 0) {
2012                         mask = deny;
2013                 } else {
2014                         continue;
2015                 }
2016
2017                 found = 1;
2018                 *mask |= aci_list_get_attr_rights(&perm, attr, val);
2019                 *mask |= aci_list_get_attr_rights(&perm, &aci_bv_br_all, NULL);
2020         }
2021         return(found);
2022 }
2023
2024 static int
2025 aci_group_member (
2026         struct berval *subj,
2027         struct berval *defgrpoc,
2028         struct berval *defgrpat,
2029         Operation               *op,
2030         Entry           *e,
2031         regmatch_t      *matches
2032 )
2033 {
2034         struct berval subjdn;
2035         struct berval grpoc;
2036         struct berval grpat;
2037         ObjectClass *grp_oc = NULL;
2038         AttributeDescription *grp_ad = NULL;
2039         const char *text;
2040         int rc;
2041
2042         /* format of string is "group/objectClassValue/groupAttrName" */
2043         if (aci_get_part(subj, 0, '/', &subjdn) < 0) {
2044                 return(0);
2045         }
2046
2047         if (aci_get_part(subj, 1, '/', &grpoc) < 0) {
2048                 grpoc = *defgrpoc;
2049         }
2050
2051         if (aci_get_part(subj, 2, '/', &grpat) < 0) {
2052                 grpat = *defgrpat;
2053         }
2054
2055         rc = slap_bv2ad( &grpat, &grp_ad, &text );
2056         if( rc != LDAP_SUCCESS ) {
2057                 rc = 0;
2058                 goto done;
2059         }
2060         rc = 0;
2061
2062         grp_oc = oc_bvfind( &grpoc );
2063
2064         if (grp_oc != NULL && grp_ad != NULL ) {
2065                 char buf[ACL_BUF_SIZE];
2066                 struct berval bv, ndn;
2067                 bv.bv_len = sizeof( buf ) - 1;
2068                 bv.bv_val = (char *)&buf;
2069                 string_expand(&bv, &subjdn, e->e_ndn, matches);
2070                 if ( dnNormalize(0, NULL, NULL, &bv, &ndn, op->o_tmpmemctx) == LDAP_SUCCESS ) {
2071                         rc = (backend_group(op, e, &ndn, &op->o_ndn,
2072                                 grp_oc, grp_ad) == 0);
2073                         free( ndn.bv_val );
2074                 }
2075         }
2076
2077 done:
2078         return(rc);
2079 }
2080
2081 static int
2082 aci_mask(
2083     Operation           *op,
2084     Entry                       *e,
2085         AttributeDescription *desc,
2086     struct berval       *val,
2087     struct berval       *aci,
2088         regmatch_t              *matches,
2089         slap_access_t   *grant,
2090         slap_access_t   *deny,
2091         struct berval   *scope
2092 )
2093 {
2094     struct berval bv, perms, sdn;
2095         int rc;
2096
2097
2098         assert( desc->ad_cname.bv_val != NULL );
2099
2100         /* parse an aci of the form:
2101                 oid#scope#action;rights;attr;rights;attr$action;rights;attr;rights;attr#dnType#subjectDN
2102
2103            See draft-ietf-ldapext-aci-model-04.txt section 9.1 for
2104            a full description of the format for this attribute.
2105            Differences: "this" in the draft is "self" here, and
2106            "self" and "public" is in the position of dnType.
2107
2108            For now, this routine only supports scope=entry.
2109          */
2110         /* check that the aci has all 5 components */
2111         if (aci_get_part(aci, 4, '#', NULL) < 0)
2112                 return(0);
2113
2114         /* check that the aci family is supported */
2115         if (aci_get_part(aci, 0, '#', &bv) < 0)
2116                 return(0);
2117
2118         /* check that the scope matches */
2119         if (aci_get_part(aci, 1, '#', &bv) < 0
2120                 || ber_bvstrcasecmp( scope, &bv ) != 0)
2121         {
2122                 return(0);
2123         }
2124
2125         /* get the list of permissions clauses, bail if empty */
2126         if (aci_get_part(aci, 2, '#', &perms) <= 0)
2127                 return(0);
2128
2129         /* check if any permissions allow desired access */
2130         if (aci_list_get_rights(&perms, &desc->ad_cname, val, grant, deny) == 0)
2131                 return(0);
2132
2133         /* see if we have a DN match */
2134         if (aci_get_part(aci, 3, '#', &bv) < 0)
2135                 return(0);
2136
2137         if (aci_get_part(aci, 4, '#', &sdn) < 0)
2138                 return(0);
2139
2140         if (ber_bvstrcasecmp( &aci_bv_access_id, &bv ) == 0) {
2141                 struct berval ndn;
2142                 rc = 0;
2143                 if ( dnNormalize(0, NULL, NULL, &sdn, &ndn, op->o_tmpmemctx) == LDAP_SUCCESS ) {
2144                         if (dn_match( &op->o_ndn, &ndn))
2145                                 rc = 1;
2146                         free(ndn.bv_val);
2147                 }
2148                 return (rc);
2149
2150         } else if (ber_bvstrcasecmp( &aci_bv_public, &bv ) == 0) {
2151                 return(1);
2152
2153         } else if (ber_bvstrcasecmp( &aci_bv_self, &bv ) == 0) {
2154                 if (dn_match(&op->o_ndn, &e->e_nname))
2155                         return(1);
2156
2157         } else if (ber_bvstrcasecmp( &aci_bv_dnattr, &bv ) == 0) {
2158                 Attribute *at;
2159                 AttributeDescription *ad = NULL;
2160                 const char *text;
2161
2162                 rc = slap_bv2ad( &sdn, &ad, &text );
2163
2164                 if( rc != LDAP_SUCCESS ) {
2165                         return 0;
2166                 }
2167
2168                 rc = 0;
2169
2170                 bv = op->o_ndn;
2171
2172                 for(at = attrs_find( e->e_attrs, ad );
2173                         at != NULL;
2174                         at = attrs_find( at->a_next, ad ) )
2175                 {
2176                         if (value_find_ex( ad,
2177                                 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
2178                                         SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
2179                                 at->a_nvals,
2180                                 &bv, op->o_tmpmemctx) == 0 )
2181                         {
2182                                 rc = 1;
2183                                 break;
2184                         }
2185                 }
2186
2187                 return rc;
2188
2189
2190         } else if (ber_bvstrcasecmp( &aci_bv_group, &bv ) == 0) {
2191                 if (aci_group_member(&sdn, &aci_bv_group_class, &aci_bv_group_attr, op, e, matches))
2192                         return(1);
2193
2194         } else if (ber_bvstrcasecmp( &aci_bv_role, &bv ) == 0) {
2195                 if (aci_group_member(&sdn, &aci_bv_role_class, &aci_bv_role_attr, op, e, matches))
2196                         return(1);
2197
2198         } else if (ber_bvstrcasecmp( &aci_bv_set, &bv ) == 0) {
2199                 if (aci_match_set(&sdn, op, e, 0))
2200                         return(1);
2201
2202         } else if (ber_bvstrcasecmp( &aci_bv_set_ref, &bv ) == 0) {
2203                 if (aci_match_set(&sdn, op, e, 1))
2204                         return(1);
2205
2206         }
2207
2208         return(0);
2209 }
2210
2211 #endif  /* SLAPD_ACI_ENABLED */
2212
2213 static void
2214 string_expand(
2215         struct berval *bv,
2216         struct berval *pat,
2217         char *match,
2218         regmatch_t *matches)
2219 {
2220         ber_len_t       size;
2221         char   *sp;
2222         char   *dp;
2223         int     flag;
2224
2225         size = 0;
2226         bv->bv_val[0] = '\0';
2227         bv->bv_len--; /* leave space for lone $ */
2228
2229         flag = 0;
2230         for ( dp = bv->bv_val, sp = pat->bv_val; size < bv->bv_len &&
2231                 sp < pat->bv_val + pat->bv_len ; sp++ )
2232         {
2233                 /* did we previously see a $ */
2234                 if ( flag ) {
2235                         if ( flag == 1 && *sp == '$' ) {
2236                                 *dp++ = '$';
2237                                 size++;
2238                                 flag = 0;
2239
2240                         } else if ( flag == 1 && *sp == '{' /*'}'*/) {
2241                                 flag = 2;
2242
2243                         } else if ( *sp >= '0' && *sp <= '9' ) {
2244                                 int     n;
2245                                 int     i;
2246                                 int     l;
2247
2248                                 n = *sp - '0';
2249
2250                                 if ( flag == 2 ) {
2251                                         for ( sp++; *sp != '\0' && *sp != /*'{'*/ '}'; sp++ ) {
2252                                                 if ( *sp >= '0' && *sp <= '9' ) {
2253                                                         n = 10*n + ( *sp - '0' );
2254                                                 }
2255                                         }
2256
2257                                         if ( *sp != /*'{'*/ '}' ) {
2258                                                 /* error */
2259                                         }
2260                                 }
2261
2262                                 if ( n >= MAXREMATCHES ) {
2263
2264                                 }
2265
2266                                 *dp = '\0';
2267                                 i = matches[n].rm_so;
2268                                 l = matches[n].rm_eo;
2269                                 for ( ; size < bv->bv_len && i < l; size++, i++ ) {
2270                                         *dp++ = match[i];
2271                                 }
2272                                 *dp = '\0';
2273
2274                                 flag = 0;
2275                         }
2276                 } else {
2277                         if (*sp == '$') {
2278                                 flag = 1;
2279                         } else {
2280                                 *dp++ = *sp;
2281                                 size++;
2282                         }
2283                 }
2284         }
2285
2286         if ( flag ) {
2287                 /* must have ended with a single $ */
2288                 *dp++ = '$';
2289                 size++;
2290         }
2291
2292         *dp = '\0';
2293         bv->bv_len = size;
2294
2295 #ifdef NEW_LOGGING
2296         LDAP_LOG( ACL, DETAIL1,
2297            "string_expand:  pattern = %.*s\n", (int)pat->bv_len, pat->bv_val, 0 );
2298         LDAP_LOG( ACL, DETAIL1, "string_expand:  expanded = %s\n", bv->bv_val, 0, 0 );
2299 #else
2300         Debug( LDAP_DEBUG_TRACE, "=> string_expand: pattern:  %.*s\n", (int)pat->bv_len, pat->bv_val, 0 );
2301         Debug( LDAP_DEBUG_TRACE, "=> string_expand: expanded: %s\n", bv->bv_val, 0, 0 );
2302 #endif
2303 }
2304
2305 static int
2306 regex_matches(
2307         struct berval *pat,                     /* pattern to expand and match against */
2308         char *str,                              /* string to match against pattern */
2309         char *buf,                              /* buffer with $N expansion variables */
2310         regmatch_t *matches             /* offsets in buffer for $N expansion variables */
2311 )
2312 {
2313         regex_t re;
2314         char newbuf[ACL_BUF_SIZE];
2315         struct berval bv;
2316         int     rc;
2317
2318         bv.bv_len = sizeof(newbuf) - 1;
2319         bv.bv_val = newbuf;
2320
2321         if(str == NULL) str = "";
2322
2323         string_expand(&bv, pat, buf, matches);
2324         if (( rc = regcomp(&re, newbuf, REG_EXTENDED|REG_ICASE))) {
2325                 char error[ACL_BUF_SIZE];
2326                 regerror(rc, &re, error, sizeof(error));
2327
2328 #ifdef NEW_LOGGING
2329                 LDAP_LOG( ACL, ERR,
2330                            "regex_matches: compile( \"%s\", \"%s\") failed %s\n",
2331                            pat->bv_val, str, error  );
2332 #else
2333                 Debug( LDAP_DEBUG_TRACE,
2334                     "compile( \"%s\", \"%s\") failed %s\n",
2335                         pat->bv_val, str, error );
2336 #endif
2337                 return( 0 );
2338         }
2339
2340         rc = regexec(&re, str, 0, NULL, 0);
2341         regfree( &re );
2342
2343 #ifdef NEW_LOGGING
2344         LDAP_LOG( ACL, DETAIL2, "regex_matches: string:   %s\n", str, 0, 0 );
2345         LDAP_LOG( ACL, DETAIL2, "regex_matches: rc:     %d  %s\n",
2346                    rc, rc ? "matches" : "no matches", 0  );
2347 #else
2348         Debug( LDAP_DEBUG_TRACE,
2349             "=> regex_matches: string:   %s\n", str, 0, 0 );
2350         Debug( LDAP_DEBUG_TRACE,
2351             "=> regex_matches: rc: %d %s\n",
2352                 rc, !rc ? "matches" : "no matches", 0 );
2353 #endif
2354         return( !rc );
2355 }
2356