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   1 /* aclparse.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 1998-2018 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/ctype.h>
  32 #include <ac/regex.h>
  33 #include <ac/socket.h>
  34 #include <ac/string.h>
  35 #include <ac/unistd.h>
  36
  37 #include "slap.h"
  38 #include "lber_pvt.h"
  39 #include "lutil.h"
  40
  41 static const char style_base[] = "base";
  42 const char *style_strings[] = {
  43         "regex",
  44         "expand",
  45         "exact",
  46         "one",
  47         "subtree",
  48         "children",
  49         "level",
  50         "attrof",
  51         "anonymous",
  52         "users",
  53         "self",
  54         "ip",
  55         "ipv6",
  56         "path",
  57         NULL
  58 };
  59
  60 #define ACLBUF_CHUNKSIZE        8192
  61 static struct berval aclbuf;
  62
  63 static void             split(char *line, int splitchar, char **left, char **right);
  64 static void             access_append(Access **l, Access *a);
  65 static void             access_free( Access *a );
  66 static int              acl_usage(void);
  67
  68 static void             acl_regex_normalized_dn(const char *src, struct berval *pat);
  69
  70 #ifdef LDAP_DEBUG
  71 static void             print_acl(Backend *be, AccessControl *a);
  72 #endif
  73
  74 static int              check_scope( BackendDB *be, AccessControl *a );
  75
  76 #ifdef SLAP_DYNACL
  77 static int
  78 slap_dynacl_config(
  79         const char *fname,
  80         int lineno,
  81         Access *b,
  82         const char *name,
  83         const char *opts,
  84         slap_style_t sty,
  85         const char *right )
  86 {
  87         slap_dynacl_t   *da, *tmp;
  88         int             rc = 0;
  89
  90         for ( da = b->a_dynacl; da; da = da->da_next ) {
  91                 if ( strcasecmp( da->da_name, name ) == 0 ) {
  92                         Debug( LDAP_DEBUG_ANY,
  93                                 "%s: line %d: dynacl \"%s\" already specified.\n",
  94                                 fname, lineno, name );
  95                         return acl_usage();
  96                 }
  97         }
  98
  99         da = slap_dynacl_get( name );
 100         if ( da == NULL ) {
 101                 return -1;
 102         }
 103
 104         tmp = ch_malloc( sizeof( slap_dynacl_t ) );
 105         *tmp = *da;
 106
 107         if ( tmp->da_parse ) {
 108                 rc = ( *tmp->da_parse )( fname, lineno, opts, sty, right, &tmp->da_private );
 109                 if ( rc ) {
 110                         ch_free( tmp );
 111                         return rc;
 112                 }
 113         }
 114
 115         tmp->da_next = b->a_dynacl;
 116         b->a_dynacl = tmp;
 117
 118         return 0;
 119 }
 120 #endif /* SLAP_DYNACL */
 121
 122 static void
 123 regtest(const char *fname, int lineno, char *pat) {
 124         int e;
 125         regex_t re;
 126
 127         char            buf[ SLAP_TEXT_BUFLEN ];
 128         unsigned        size;
 129
 130         char *sp;
 131         char *dp;
 132         int  flag;
 133
 134         sp = pat;
 135         dp = buf;
 136         size = 0;
 137         buf[0] = '\0';
 138
 139         for (size = 0, flag = 0; (size < sizeof(buf)) && *sp; sp++) {
 140                 if (flag) {
 141                         if (*sp == '$'|| (*sp >= '0' && *sp <= '9')) {
 142                                 *dp++ = *sp;
 143                                 size++;
 144                         }
 145                         flag = 0;
 146
 147                 } else {
 148                         if (*sp == '$') {
 149                                 flag = 1;
 150                         } else {
 151                                 *dp++ = *sp;
 152                                 size++;
 153                         }
 154                 }
 155         }
 156
 157         *dp = '\0';
 158         if ( size >= (sizeof(buf) - 1) ) {
 159                 Debug( LDAP_DEBUG_ANY,
 160                         "%s: line %d: regular expression \"%s\" too large\n",
 161                         fname, lineno, pat );
 162                 (void)acl_usage();
 163                 exit( EXIT_FAILURE );
 164         }
 165
 166         if ((e = regcomp(&re, buf, REG_EXTENDED|REG_ICASE))) {
 167                 char error[ SLAP_TEXT_BUFLEN ];
 168
 169                 regerror(e, &re, error, sizeof(error));
 170
 171                 snprintf( buf, sizeof( buf ),
 172                         "regular expression \"%s\" bad because of %s",
 173                         pat, error );
 174                 Debug( LDAP_DEBUG_ANY,
 175                         "%s: line %d: %s\n",
 176                         fname, lineno, buf );
 177                 acl_usage();
 178                 exit( EXIT_FAILURE );
 179         }
 180         regfree(&re);
 181 }
 182
 183 /*
 184  * Experimental
 185  *
 186  * Check if the pattern of an ACL, if any, matches the scope
 187  * of the backend it is defined within.
 188  */
 189 #define ACL_SCOPE_UNKNOWN       (-2)
 190 #define ACL_SCOPE_ERR           (-1)
 191 #define ACL_SCOPE_OK            (0)
 192 #define ACL_SCOPE_PARTIAL       (1)
 193 #define ACL_SCOPE_WARN          (2)
 194
 195 static int
 196 check_scope( BackendDB *be, AccessControl *a )
 197 {
 198         ber_len_t       patlen;
 199         struct berval   dn;
 200
 201         dn = be->be_nsuffix[0];
 202
 203         if ( BER_BVISEMPTY( &dn ) ) {
 204                 return ACL_SCOPE_OK;
 205         }
 206
 207         if ( !BER_BVISEMPTY( &a->acl_dn_pat ) ||
 208                         a->acl_dn_style != ACL_STYLE_REGEX )
 209         {
 210                 slap_style_t    style = a->acl_dn_style;
 211
 212                 if ( style == ACL_STYLE_REGEX ) {
 213                         char            dnbuf[SLAP_LDAPDN_MAXLEN + 2];
 214                         char            rebuf[SLAP_LDAPDN_MAXLEN + 1];
 215                         ber_len_t       rebuflen;
 216                         regex_t         re;
 217                         int             rc;
 218
 219                         /* add trailing '$' to database suffix to form
 220                          * a simple trial regex pattern "<suffix>$" */
 221                         AC_MEMCPY( dnbuf, be->be_nsuffix[0].bv_val,
 222                                 be->be_nsuffix[0].bv_len );
 223                         dnbuf[be->be_nsuffix[0].bv_len] = '$';
 224                         dnbuf[be->be_nsuffix[0].bv_len + 1] = '\0';
 225
 226                         if ( regcomp( &re, dnbuf, REG_EXTENDED|REG_ICASE ) ) {
 227                                 return ACL_SCOPE_WARN;
 228                         }
 229
 230                         /* remove trailing ')$', if any, from original
 231                          * regex pattern */
 232                         rebuflen = a->acl_dn_pat.bv_len;
 233                         AC_MEMCPY( rebuf, a->acl_dn_pat.bv_val, rebuflen + 1 );
 234                         if ( rebuf[rebuflen - 1] == '$' ) {
 235                                 rebuf[--rebuflen] = '\0';
 236                         }
 237                         while ( rebuflen > be->be_nsuffix[0].bv_len && rebuf[rebuflen - 1] == ')' ) {
 238                                 rebuf[--rebuflen] = '\0';
 239                         }
 240                         if ( rebuflen == be->be_nsuffix[0].bv_len ) {
 241                                 rc = ACL_SCOPE_WARN;
 242                                 goto regex_done;
 243                         }
 244
 245                         /* not a clear indication of scoping error, though */
 246                         rc = regexec( &re, rebuf, 0, NULL, 0 )
 247                                 ? ACL_SCOPE_WARN : ACL_SCOPE_OK;
 248
 249 regex_done:;
 250                         regfree( &re );
 251                         return rc;
 252                 }
 253
 254                 patlen = a->acl_dn_pat.bv_len;
 255                 /* If backend suffix is longer than pattern,
 256                  * it is a potential mismatch (in the sense
 257                  * that a superior naming context could
 258                  * match */
 259                 if ( dn.bv_len > patlen ) {
 260                         /* base is blatantly wrong */
 261                         if ( style == ACL_STYLE_BASE ) return ACL_SCOPE_ERR;
 262
 263                         /* a style of one can be wrong if there is
 264                          * more than one level between the suffix
 265                          * and the pattern */
 266                         if ( style == ACL_STYLE_ONE ) {
 267                                 ber_len_t       rdnlen = 0;
 268                                 int             sep = 0;
 269
 270                                 if ( patlen > 0 ) {
 271                                         if ( !DN_SEPARATOR( dn.bv_val[dn.bv_len - patlen - 1] )) {
 272                                                 return ACL_SCOPE_ERR;
 273                                         }
 274                                         sep = 1;
 275                                 }
 276
 277                                 rdnlen = dn_rdnlen( NULL, &dn );
 278                                 if ( rdnlen != dn.bv_len - patlen - sep )
 279                                         return ACL_SCOPE_ERR;
 280                         }
 281
 282                         /* if the trailing part doesn't match,
 283                          * then it's an error */
 284                         if ( strcmp( a->acl_dn_pat.bv_val,
 285                                 &dn.bv_val[dn.bv_len - patlen] ) != 0 )
 286                         {
 287                                 return ACL_SCOPE_ERR;
 288                         }
 289
 290                         return ACL_SCOPE_PARTIAL;
 291                 }
 292
 293                 switch ( style ) {
 294                 case ACL_STYLE_BASE:
 295                 case ACL_STYLE_ONE:
 296                 case ACL_STYLE_CHILDREN:
 297                 case ACL_STYLE_SUBTREE:
 298                         break;
 299
 300                 default:
 301                         assert( 0 );
 302                         break;
 303                 }
 304
 305                 if ( dn.bv_len < patlen &&
 306                         !DN_SEPARATOR( a->acl_dn_pat.bv_val[patlen - dn.bv_len - 1] ))
 307                 {
 308                         return ACL_SCOPE_ERR;
 309                 }
 310
 311                 if ( strcmp( &a->acl_dn_pat.bv_val[patlen - dn.bv_len], dn.bv_val )
 312                         != 0 )
 313                 {
 314                         return ACL_SCOPE_ERR;
 315                 }
 316
 317                 return ACL_SCOPE_OK;
 318         }
 319
 320         return ACL_SCOPE_UNKNOWN;
 321 }
 322
 323 int
 324 parse_acl(
 325         Backend *be,
 326         const char      *fname,
 327         int             lineno,
 328         int             argc,
 329         char            **argv,
 330         int             pos )
 331 {
 332         int             i;
 333         char            *left, *right, *style;
 334         struct berval   bv;
 335         AccessControl   *a = NULL;
 336         Access  *b = NULL;
 337         int rc;
 338         const char *text;
 339
 340         for ( i = 1; i < argc; i++ ) {
 341                 /* to clause - select which entries are protected */
 342                 if ( strcasecmp( argv[i], "to" ) == 0 ) {
 343                         if ( a != NULL ) {
 344                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 345                                         "only one to clause allowed in access line\n",
 346                                     fname, lineno, 0 );
 347                                 goto fail;
 348                         }
 349                         a = (AccessControl *) ch_calloc( 1, sizeof(AccessControl) );
 350                         a->acl_attrval_style = ACL_STYLE_NONE;
 351                         for ( ++i; i < argc; i++ ) {
 352                                 if ( strcasecmp( argv[i], "by" ) == 0 ) {
 353                                         i--;
 354                                         break;
 355                                 }
 356
 357                                 if ( strcasecmp( argv[i], "*" ) == 0 ) {
 358                                         if ( !BER_BVISEMPTY( &a->acl_dn_pat ) ||
 359                                                 a->acl_dn_style != ACL_STYLE_REGEX )
 360                                         {
 361                                                 Debug( LDAP_DEBUG_ANY,
 362                                                         "%s: line %d: dn pattern"
 363                                                         " already specified in to clause.\n",
 364                                                         fname, lineno, 0 );
 365                                                 goto fail;
 366                                         }
 367
 368                                         ber_str2bv( "*", STRLENOF( "*" ), 1, &a->acl_dn_pat );
 369                                         continue;
 370                                 }
 371
 372                                 split( argv[i], '=', &left, &right );
 373                                 split( left, '.', &left, &style );
 374
 375                                 if ( right == NULL ) {
 376                                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 377                                                 "missing \"=\" in \"%s\" in to clause\n",
 378                                             fname, lineno, left );
 379                                         goto fail;
 380                                 }
 381
 382                                 if ( strcasecmp( left, "dn" ) == 0 ) {
 383                                         if ( !BER_BVISEMPTY( &a->acl_dn_pat ) ||
 384                                                 a->acl_dn_style != ACL_STYLE_REGEX )
 385                                         {
 386                                                 Debug( LDAP_DEBUG_ANY,
 387                                                         "%s: line %d: dn pattern"
 388                                                         " already specified in to clause.\n",
 389                                                         fname, lineno, 0 );
 390                                                 goto fail;
 391                                         }
 392
 393                                         if ( style == NULL || *style == '\0' ||
 394                                                 strcasecmp( style, "baseObject" ) == 0 ||
 395                                                 strcasecmp( style, "base" ) == 0 ||
 396                                                 strcasecmp( style, "exact" ) == 0 )
 397                                         {
 398                                                 a->acl_dn_style = ACL_STYLE_BASE;
 399                                                 ber_str2bv( right, 0, 1, &a->acl_dn_pat );
 400
 401                                         } else if ( strcasecmp( style, "oneLevel" ) == 0 ||
 402                                                 strcasecmp( style, "one" ) == 0 )
 403                                         {
 404                                                 a->acl_dn_style = ACL_STYLE_ONE;
 405                                                 ber_str2bv( right, 0, 1, &a->acl_dn_pat );
 406
 407                                         } else if ( strcasecmp( style, "subtree" ) == 0 ||
 408                                                 strcasecmp( style, "sub" ) == 0 )
 409                                         {
 410                                                 if( *right == '\0' ) {
 411                                                         ber_str2bv( "*", STRLENOF( "*" ), 1, &a->acl_dn_pat );
 412
 413                                                 } else {
 414                                                         a->acl_dn_style = ACL_STYLE_SUBTREE;
 415                                                         ber_str2bv( right, 0, 1, &a->acl_dn_pat );
 416                                                 }
 417
 418                                         } else if ( strcasecmp( style, "children" ) == 0 ) {
 419                                                 a->acl_dn_style = ACL_STYLE_CHILDREN;
 420                                                 ber_str2bv( right, 0, 1, &a->acl_dn_pat );
 421
 422                                         } else if ( strcasecmp( style, "regex" ) == 0 ) {
 423                                                 a->acl_dn_style = ACL_STYLE_REGEX;
 424
 425                                                 if ( *right == '\0' ) {
 426                                                         /* empty regex should match empty DN */
 427                                                         a->acl_dn_style = ACL_STYLE_BASE;
 428                                                         ber_str2bv( right, 0, 1, &a->acl_dn_pat );
 429
 430                                                 } else if ( strcmp(right, "*") == 0
 431                                                         || strcmp(right, ".*") == 0
 432                                                         || strcmp(right, ".*$") == 0
 433                                                         || strcmp(right, "^.*") == 0
 434                                                         || strcmp(right, "^.*$") == 0
 435                                                         || strcmp(right, ".*$$") == 0
 436                                                         || strcmp(right, "^.*$$") == 0 )
 437                                                 {
 438                                                         ber_str2bv( "*", STRLENOF("*"), 1, &a->acl_dn_pat );
 439
 440                                                 } else {
 441                                                         acl_regex_normalized_dn( right, &a->acl_dn_pat );
 442                                                 }
 443
 444                                         } else {
 445                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 446                                                         "unknown dn style \"%s\" in to clause\n",
 447                                                     fname, lineno, style );
 448                                                 goto fail;
 449                                         }
 450
 451                                         continue;
 452                                 }
 453
 454                                 if ( strcasecmp( left, "filter" ) == 0 ) {
 455                                         if ( (a->acl_filter = str2filter( right )) == NULL ) {
 456                                                 Debug( LDAP_DEBUG_ANY,
 457                                 "%s: line %d: bad filter \"%s\" in to clause\n",
 458                                                     fname, lineno, right );
 459                                                 goto fail;
 460                                         }
 461
 462                                 } else if ( strcasecmp( left, "attr" ) == 0             /* TOLERATED */
 463                                                 || strcasecmp( left, "attrs" ) == 0 )   /* DOCUMENTED */
 464                                 {
 465                                         if ( strcasecmp( left, "attr" ) == 0 ) {
 466                                                 Debug( LDAP_DEBUG_ANY,
 467                                                         "%s: line %d: \"attr\" "
 468                                                         "is deprecated (and undocumented); "
 469                                                         "use \"attrs\" instead.\n",
 470                                                         fname, lineno, 0 );
 471                                         }
 472
 473                                         a->acl_attrs = str2anlist( a->acl_attrs,
 474                                                 right, "," );
 475                                         if ( a->acl_attrs == NULL ) {
 476                                                 Debug( LDAP_DEBUG_ANY,
 477                                 "%s: line %d: unknown attr \"%s\" in to clause\n",
 478                                                     fname, lineno, right );
 479                                                 goto fail;
 480                                         }
 481
 482                                 } else if ( strncasecmp( left, "val", 3 ) == 0 ) {
 483                                         struct berval   bv;
 484                                         char            *mr;
 485
 486                                         if ( !BER_BVISEMPTY( &a->acl_attrval ) ) {
 487                                                 Debug( LDAP_DEBUG_ANY,
 488                                 "%s: line %d: attr val already specified in to clause.\n",
 489                                                         fname, lineno, 0 );
 490                                                 goto fail;
 491                                         }
 492                                         if ( a->acl_attrs == NULL || !BER_BVISEMPTY( &a->acl_attrs[1].an_name ) )
 493                                         {
 494                                                 Debug( LDAP_DEBUG_ANY,
 495                                 "%s: line %d: attr val requires a single attribute.\n",
 496                                                         fname, lineno, 0 );
 497                                                 goto fail;
 498                                         }
 499
 500                                         ber_str2bv( right, 0, 0, &bv );
 501                                         a->acl_attrval_style = ACL_STYLE_BASE;
 502
 503                                         mr = strchr( left, '/' );
 504                                         if ( mr != NULL ) {
 505                                                 mr[ 0 ] = '\0';
 506                                                 mr++;
 507
 508                                                 a->acl_attrval_mr = mr_find( mr );
 509                                                 if ( a->acl_attrval_mr == NULL ) {
 510                                                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 511                                                                 "invalid matching rule \"%s\".\n",
 512                                                                 fname, lineno, mr );
 513                                                         goto fail;
 514                                                 }
 515
 516                                                 if( !mr_usable_with_at( a->acl_attrval_mr, a->acl_attrs[ 0 ].an_desc->ad_type ) )
 517                                                 {
 518                                                         char    buf[ SLAP_TEXT_BUFLEN ];
 519
 520                                                         snprintf( buf, sizeof( buf ),
 521                                                                 "matching rule \"%s\" use "
 522                                                                 "with attr \"%s\" not appropriate.",
 523                                                                 mr, a->acl_attrs[ 0 ].an_name.bv_val );
 524
 525
 526                                                         Debug( LDAP_DEBUG_ANY, "%s: line %d: %s\n",
 527                                                                 fname, lineno, buf );
 528                                                         goto fail;
 529                                                 }
 530                                         }
 531
 532                                         if ( style != NULL ) {
 533                                                 if ( strcasecmp( style, "regex" ) == 0 ) {
 534                                                         int e = regcomp( &a->acl_attrval_re, bv.bv_val,
 535                                                                 REG_EXTENDED | REG_ICASE );
 536                                                         if ( e ) {
 537                                                                 char    err[SLAP_TEXT_BUFLEN],
 538                                                                         buf[ SLAP_TEXT_BUFLEN ];
 539
 540                                                                 regerror( e, &a->acl_attrval_re, err, sizeof( err ) );
 541
 542                                                                 snprintf( buf, sizeof( buf ),
 543                                                                         "regular expression \"%s\" bad because of %s",
 544                                                                         right, err );
 545
 546                                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: %s\n",
 547                                                                         fname, lineno, buf );
 548                                                                 goto fail;
 549                                                         }
 550                                                         a->acl_attrval_style = ACL_STYLE_REGEX;
 551
 552                                                 } else {
 553                                                         /* FIXME: if the attribute has DN syntax, we might
 554                                                          * allow one, subtree and children styles as well */
 555                                                         if ( !strcasecmp( style, "base" ) ||
 556                                                                 !strcasecmp( style, "exact" ) ) {
 557                                                                 a->acl_attrval_style = ACL_STYLE_BASE;
 558
 559                                                         } else if ( a->acl_attrs[0].an_desc->ad_type->
 560                                                                 sat_syntax == slap_schema.si_syn_distinguishedName )
 561                                                         {
 562                                                                 if ( !strcasecmp( style, "baseObject" ) ||
 563                                                                         !strcasecmp( style, "base" ) )
 564                                                                 {
 565                                                                         a->acl_attrval_style = ACL_STYLE_BASE;
 566                                                                 } else if ( !strcasecmp( style, "onelevel" ) ||
 567                                                                         !strcasecmp( style, "one" ) )
 568                                                                 {
 569                                                                         a->acl_attrval_style = ACL_STYLE_ONE;
 570                                                                 } else if ( !strcasecmp( style, "subtree" ) ||
 571                                                                         !strcasecmp( style, "sub" ) )
 572                                                                 {
 573                                                                         a->acl_attrval_style = ACL_STYLE_SUBTREE;
 574                                                                 } else if ( !strcasecmp( style, "children" ) ) {
 575                                                                         a->acl_attrval_style = ACL_STYLE_CHILDREN;
 576                                                                 } else {
 577                                                                         char    buf[ SLAP_TEXT_BUFLEN ];
 578
 579                                                                         snprintf( buf, sizeof( buf ),
 580                                                                                 "unknown val.<style> \"%s\" for attributeType \"%s\" "
 581                                                                                         "with DN syntax.",
 582                                                                                 style,
 583                                                                                 a->acl_attrs[0].an_desc->ad_cname.bv_val );
 584
 585                                                                         Debug( LDAP_DEBUG_CONFIG | LDAP_DEBUG_ACL,
 586                                                                                 "%s: line %d: %s\n",
 587                                                                                 fname, lineno, buf );
 588                                                                         goto fail;
 589                                                                 }
 590
 591                                                                 rc = dnNormalize( 0, NULL, NULL, &bv, &a->acl_attrval, NULL );
 592                                                                 if ( rc != LDAP_SUCCESS ) {
 593                                                                         char    buf[ SLAP_TEXT_BUFLEN ];
 594
 595                                                                         snprintf( buf, sizeof( buf ),
 596                                                                                 "unable to normalize DN \"%s\" "
 597                                                                                 "for attributeType \"%s\" (%d).",
 598                                                                                 bv.bv_val,
 599                                                                                 a->acl_attrs[0].an_desc->ad_cname.bv_val,
 600                                                                                 rc );
 601                                                                         Debug( LDAP_DEBUG_ANY,
 602                                                                                 "%s: line %d: %s\n",
 603                                                                                 fname, lineno, buf );
 604                                                                         goto fail;
 605                                                                 }
 606
 607                                                         } else {
 608                                                                 char    buf[ SLAP_TEXT_BUFLEN ];
 609
 610                                                                 snprintf( buf, sizeof( buf ),
 611                                                                         "unknown val.<style> \"%s\" for attributeType \"%s\".",
 612                                                                         style, a->acl_attrs[0].an_desc->ad_cname.bv_val );
 613                                                                 Debug( LDAP_DEBUG_CONFIG | LDAP_DEBUG_ACL,
 614                                                                         "%s: line %d: %s\n",
 615                                                                         fname, lineno, buf );
 616                                                                 goto fail;
 617                                                         }
 618                                                 }
 619                                         }
 620
 621                                         /* Check for appropriate matching rule */
 622                                         if ( a->acl_attrval_style == ACL_STYLE_REGEX ) {
 623                                                 ber_dupbv( &a->acl_attrval, &bv );
 624
 625                                         } else if ( BER_BVISNULL( &a->acl_attrval ) ) {
 626                                                 int             rc;
 627                                                 const char      *text;
 628
 629                                                 if ( a->acl_attrval_mr == NULL ) {
 630                                                         a->acl_attrval_mr = a->acl_attrs[ 0 ].an_desc->ad_type->sat_equality;
 631                                                 }
 632
 633                                                 if ( a->acl_attrval_mr == NULL ) {
 634                                                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 635                                                                 "attr \"%s\" does not have an EQUALITY matching rule.\n",
 636                                                                 fname, lineno, a->acl_attrs[ 0 ].an_name.bv_val );
 637                                                         goto fail;
 638                                                 }
 639
 640                                                 rc = asserted_value_validate_normalize(
 641                                                         a->acl_attrs[ 0 ].an_desc,
 642                                                         a->acl_attrval_mr,
 643                                                         SLAP_MR_EQUALITY|SLAP_MR_VALUE_OF_ASSERTION_SYNTAX,
 644                                                         &bv,
 645                                                         &a->acl_attrval,
 646                                                         &text,
 647                                                         NULL );
 648                                                 if ( rc != LDAP_SUCCESS ) {
 649                                                         char    buf[ SLAP_TEXT_BUFLEN ];
 650
 651                                                         snprintf( buf, sizeof( buf ), "%s: line %d: "
 652                                                                 " attr \"%s\" normalization failed (%d: %s)",
 653                                                                 fname, lineno,
 654                                                                 a->acl_attrs[ 0 ].an_name.bv_val, rc, text );
 655                                                         Debug( LDAP_DEBUG_ANY, "%s: line %d: %s.\n",
 656                                                                 fname, lineno, buf );
 657                                                         goto fail;
 658                                                 }
 659                                         }
 660
 661                                 } else {
 662                                         Debug( LDAP_DEBUG_ANY,
 663                                                 "%s: line %d: expecting <what> got \"%s\"\n",
 664                                             fname, lineno, left );
 665                                         goto fail;
 666                                 }
 667                         }
 668
 669                         if ( !BER_BVISNULL( &a->acl_dn_pat ) &&
 670                                         ber_bvccmp( &a->acl_dn_pat, '*' ) )
 671                         {
 672                                 free( a->acl_dn_pat.bv_val );
 673                                 BER_BVZERO( &a->acl_dn_pat );
 674                                 a->acl_dn_style = ACL_STYLE_REGEX;
 675                         }
 676
 677                         if ( !BER_BVISEMPTY( &a->acl_dn_pat ) ||
 678                                         a->acl_dn_style != ACL_STYLE_REGEX )
 679                         {
 680                                 if ( a->acl_dn_style != ACL_STYLE_REGEX ) {
 681                                         struct berval bv;
 682                                         rc = dnNormalize( 0, NULL, NULL, &a->acl_dn_pat, &bv, NULL);
 683                                         if ( rc != LDAP_SUCCESS ) {
 684                                                 Debug( LDAP_DEBUG_ANY,
 685                                                         "%s: line %d: bad DN \"%s\" in to DN clause\n",
 686                                                         fname, lineno, a->acl_dn_pat.bv_val );
 687                                                 goto fail;
 688                                         }
 689                                         free( a->acl_dn_pat.bv_val );
 690                                         a->acl_dn_pat = bv;
 691
 692                                 } else {
 693                                         int e = regcomp( &a->acl_dn_re, a->acl_dn_pat.bv_val,
 694                                                 REG_EXTENDED | REG_ICASE );
 695                                         if ( e ) {
 696                                                 char    err[ SLAP_TEXT_BUFLEN ],
 697                                                         buf[ SLAP_TEXT_BUFLEN ];
 698
 699                                                 regerror( e, &a->acl_dn_re, err, sizeof( err ) );
 700                                                 snprintf( buf, sizeof( buf ),
 701                                                         "regular expression \"%s\" bad because of %s",
 702                                                         right, err );
 703                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: %s\n",
 704                                                         fname, lineno, buf );
 705                                                 goto fail;
 706                                         }
 707                                 }
 708                         }
 709
 710                 /* by clause - select who has what access to entries */
 711                 } else if ( strcasecmp( argv[i], "by" ) == 0 ) {
 712                         if ( a == NULL ) {
 713                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 714                                         "to clause required before by clause in access line\n",
 715                                         fname, lineno, 0 );
 716                                 goto fail;
 717                         }
 718
 719                         /*
 720                          * by clause consists of <who> and <access>
 721                          */
 722
 723                         if ( ++i == argc ) {
 724                                 Debug( LDAP_DEBUG_ANY,
 725                                         "%s: line %d: premature EOL: expecting <who>\n",
 726                                         fname, lineno, 0 );
 727                                 goto fail;
 728                         }
 729
 730                         b = (Access *) ch_calloc( 1, sizeof(Access) );
 731
 732                         ACL_INVALIDATE( b->a_access_mask );
 733
 734                         /* get <who> */
 735                         for ( ; i < argc; i++ ) {
 736                                 slap_style_t    sty = ACL_STYLE_REGEX;
 737                                 char            *style_modifier = NULL;
 738                                 char            *style_level = NULL;
 739                                 int             level = 0;
 740                                 int             expand = 0;
 741                                 slap_dn_access  *bdn = &b->a_dn;
 742                                 int             is_realdn = 0;
 743
 744                                 split( argv[i], '=', &left, &right );
 745                                 split( left, '.', &left, &style );
 746                                 if ( style ) {
 747                                         split( style, ',', &style, &style_modifier );
 748
 749                                         if ( strncasecmp( style, "level", STRLENOF( "level" ) ) == 0 ) {
 750                                                 split( style, '{', &style, &style_level );
 751                                                 if ( style_level != NULL ) {
 752                                                         char *p = strchr( style_level, '}' );
 753                                                         if ( p == NULL ) {
 754                                                                 Debug( LDAP_DEBUG_ANY,
 755                                                                         "%s: line %d: premature eol: "
 756                                                                         "expecting closing '}' in \"level{n}\"\n",
 757                                                                         fname, lineno, 0 );
 758                                                                 goto fail;
 759                                                         } else if ( p == style_level ) {
 760                                                                 Debug( LDAP_DEBUG_ANY,
 761                                                                         "%s: line %d: empty level "
 762                                                                         "in \"level{n}\"\n",
 763                                                                         fname, lineno, 0 );
 764                                                                 goto fail;
 765                                                         }
 766                                                         p[0] = '\0';
 767                                                 }
 768                                         }
 769                                 }
 770
 771                                 if ( style == NULL || *style == '\0' ||
 772                                         strcasecmp( style, "exact" ) == 0 ||
 773                                         strcasecmp( style, "baseObject" ) == 0 ||
 774                                         strcasecmp( style, "base" ) == 0 )
 775                                 {
 776                                         sty = ACL_STYLE_BASE;
 777
 778                                 } else if ( strcasecmp( style, "onelevel" ) == 0 ||
 779                                         strcasecmp( style, "one" ) == 0 )
 780                                 {
 781                                         sty = ACL_STYLE_ONE;
 782
 783                                 } else if ( strcasecmp( style, "subtree" ) == 0 ||
 784                                         strcasecmp( style, "sub" ) == 0 )
 785                                 {
 786                                         sty = ACL_STYLE_SUBTREE;
 787
 788                                 } else if ( strcasecmp( style, "children" ) == 0 ) {
 789                                         sty = ACL_STYLE_CHILDREN;
 790
 791                                 } else if ( strcasecmp( style, "level" ) == 0 )
 792                                 {
 793                                         if ( lutil_atoi( &level, style_level ) != 0 ) {
 794                                                 Debug( LDAP_DEBUG_ANY,
 795                                                         "%s: line %d: unable to parse level "
 796                                                         "in \"level{n}\"\n",
 797                                                         fname, lineno, 0 );
 798                                                 goto fail;
 799                                         }
 800
 801                                         sty = ACL_STYLE_LEVEL;
 802
 803                                 } else if ( strcasecmp( style, "regex" ) == 0 ) {
 804                                         sty = ACL_STYLE_REGEX;
 805
 806                                 } else if ( strcasecmp( style, "expand" ) == 0 ) {
 807                                         sty = ACL_STYLE_EXPAND;
 808
 809                                 } else if ( strcasecmp( style, "ip" ) == 0 ) {
 810                                         sty = ACL_STYLE_IP;
 811
 812                                 } else if ( strcasecmp( style, "ipv6" ) == 0 ) {
 813 #ifndef LDAP_PF_INET6
 814                                         Debug( LDAP_DEBUG_ANY,
 815                                                 "%s: line %d: IPv6 not supported\n",
 816                                                 fname, lineno, 0 );
 817 #endif /* ! LDAP_PF_INET6 */
 818                                         sty = ACL_STYLE_IPV6;
 819
 820                                 } else if ( strcasecmp( style, "path" ) == 0 ) {
 821                                         sty = ACL_STYLE_PATH;
 822 #ifndef LDAP_PF_LOCAL
 823                                         Debug( LDAP_DEBUG_CONFIG | LDAP_DEBUG_ACL,
 824                                                 "%s: line %d: "
 825                                                 "\"path\" style modifier is useless without local.\n",
 826                                                 fname, lineno, 0 );
 827                                         goto fail;
 828 #endif /* LDAP_PF_LOCAL */
 829
 830                                 } else {
 831                                         Debug( LDAP_DEBUG_ANY,
 832                                                 "%s: line %d: unknown style \"%s\" in by clause\n",
 833                                                 fname, lineno, style );
 834                                         goto fail;
 835                                 }
 836
 837                                 if ( style_modifier &&
 838                                         strcasecmp( style_modifier, "expand" ) == 0 )
 839                                 {
 840                                         switch ( sty ) {
 841                                         case ACL_STYLE_REGEX:
 842                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 843                                                         "\"regex\" style implies \"expand\" modifier.\n",
 844                                                         fname, lineno, 0 );
 845                                                 goto fail;
 846                                                 break;
 847
 848                                         case ACL_STYLE_EXPAND:
 849                                                 break;
 850
 851                                         default:
 852                                                 /* we'll see later if it's pertinent */
 853                                                 expand = 1;
 854                                                 break;
 855                                         }
 856                                 }
 857
 858                                 if ( strncasecmp( left, "real", STRLENOF( "real" ) ) == 0 ) {
 859                                         is_realdn = 1;
 860                                         bdn = &b->a_realdn;
 861                                         left += STRLENOF( "real" );
 862                                 }
 863
 864                                 if ( strcasecmp( left, "*" ) == 0 ) {
 865                                         if ( is_realdn ) {
 866                                                 goto fail;
 867                                         }
 868
 869                                         ber_str2bv( "*", STRLENOF( "*" ), 1, &bv );
 870                                         sty = ACL_STYLE_REGEX;
 871
 872                                 } else if ( strcasecmp( left, "anonymous" ) == 0 ) {
 873                                         ber_str2bv("anonymous", STRLENOF( "anonymous" ), 1, &bv);
 874                                         sty = ACL_STYLE_ANONYMOUS;
 875
 876                                 } else if ( strcasecmp( left, "users" ) == 0 ) {
 877                                         ber_str2bv("users", STRLENOF( "users" ), 1, &bv);
 878                                         sty = ACL_STYLE_USERS;
 879
 880                                 } else if ( strcasecmp( left, "self" ) == 0 ) {
 881                                         ber_str2bv("self", STRLENOF( "self" ), 1, &bv);
 882                                         sty = ACL_STYLE_SELF;
 883
 884                                 } else if ( strcasecmp( left, "dn" ) == 0 ) {
 885                                         if ( sty == ACL_STYLE_REGEX ) {
 886                                                 bdn->a_style = ACL_STYLE_REGEX;
 887                                                 if ( right == NULL ) {
 888                                                         /* no '=' */
 889                                                         ber_str2bv("users",
 890                                                                 STRLENOF( "users" ),
 891                                                                 1, &bv);
 892                                                         bdn->a_style = ACL_STYLE_USERS;
 893
 894                                                 } else if (*right == '\0' ) {
 895                                                         /* dn="" */
 896                                                         ber_str2bv("anonymous",
 897                                                                 STRLENOF( "anonymous" ),
 898                                                                 1, &bv);
 899                                                         bdn->a_style = ACL_STYLE_ANONYMOUS;
 900
 901                                                 } else if ( strcmp( right, "*" ) == 0 ) {
 902                                                         /* dn=* */
 903                                                         /* any or users?  users for now */
 904                                                         ber_str2bv("users",
 905                                                                 STRLENOF( "users" ),
 906                                                                 1, &bv);
 907                                                         bdn->a_style = ACL_STYLE_USERS;
 908
 909                                                 } else if ( strcmp( right, ".+" ) == 0
 910                                                         || strcmp( right, "^.+" ) == 0
 911                                                         || strcmp( right, ".+$" ) == 0
 912                                                         || strcmp( right, "^.+$" ) == 0
 913                                                         || strcmp( right, ".+$$" ) == 0
 914                                                         || strcmp( right, "^.+$$" ) == 0 )
 915                                                 {
 916                                                         ber_str2bv("users",
 917                                                                 STRLENOF( "users" ),
 918                                                                 1, &bv);
 919                                                         bdn->a_style = ACL_STYLE_USERS;
 920
 921                                                 } else if ( strcmp( right, ".*" ) == 0
 922                                                         || strcmp( right, "^.*" ) == 0
 923                                                         || strcmp( right, ".*$" ) == 0
 924                                                         || strcmp( right, "^.*$" ) == 0
 925                                                         || strcmp( right, ".*$$" ) == 0
 926                                                         || strcmp( right, "^.*$$" ) == 0 )
 927                                                 {
 928                                                         ber_str2bv("*",
 929                                                                 STRLENOF( "*" ),
 930                                                                 1, &bv);
 931
 932                                                 } else {
 933                                                         acl_regex_normalized_dn( right, &bv );
 934                                                         if ( !ber_bvccmp( &bv, '*' ) ) {
 935                                                                 regtest( fname, lineno, bv.bv_val );
 936                                                         }
 937                                                 }
 938
 939                                         } else if ( right == NULL || *right == '\0' ) {
 940                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 941                                                         "missing \"=\" in (or value after) \"%s\" "
 942                                                         "in by clause\n",
 943                                                         fname, lineno, left );
 944                                                 goto fail;
 945
 946                                         } else {
 947                                                 ber_str2bv( right, 0, 1, &bv );
 948                                         }
 949
 950                                 } else {
 951                                         BER_BVZERO( &bv );
 952                                 }
 953
 954                                 if ( !BER_BVISNULL( &bv ) ) {
 955                                         if ( !BER_BVISEMPTY( &bdn->a_pat ) ) {
 956                                                 Debug( LDAP_DEBUG_ANY,
 957                                                         "%s: line %d: dn pattern already specified.\n",
 958                                                         fname, lineno, 0 );
 959                                                 goto fail;
 960                                         }
 961
 962                                         if ( sty != ACL_STYLE_REGEX &&
 963                                                         sty != ACL_STYLE_ANONYMOUS &&
 964                                                         sty != ACL_STYLE_USERS &&
 965                                                         sty != ACL_STYLE_SELF &&
 966                                                         expand == 0 )
 967                                         {
 968                                                 rc = dnNormalize(0, NULL, NULL,
 969                                                         &bv, &bdn->a_pat, NULL);
 970                                                 if ( rc != LDAP_SUCCESS ) {
 971                                                         Debug( LDAP_DEBUG_ANY,
 972                                                                 "%s: line %d: bad DN \"%s\" in by DN clause\n",
 973                                                                 fname, lineno, bv.bv_val );
 974                                                         goto fail;
 975                                                 }
 976                                                 free( bv.bv_val );
 977                                                 if ( sty == ACL_STYLE_BASE
 978                                                         && be != NULL
 979                                                         && !BER_BVISNULL( &be->be_rootndn )
 980                                                         && dn_match( &bdn->a_pat, &be->be_rootndn ) )
 981                                                 {
 982                                                         Debug( LDAP_DEBUG_ANY,
 983                                                                 "%s: line %d: rootdn is always granted "
 984                                                                 "unlimited privileges.\n",
 985                                                                 fname, lineno, 0 );
 986                                                 }
 987
 988                                         } else {
 989                                                 bdn->a_pat = bv;
 990                                         }
 991                                         bdn->a_style = sty;
 992                                         if ( expand ) {
 993                                                 char    *exp;
 994                                                 int     gotit = 0;
 995
 996                                                 for ( exp = strchr( bdn->a_pat.bv_val, '$' );
 997                                                         exp && (ber_len_t)(exp - bdn->a_pat.bv_val)
 998                                                                 < bdn->a_pat.bv_len;
 999                                                         exp = strchr( exp, '$' ) )
1000                                                 {
1001                                                         if ( ( isdigit( (unsigned char) exp[ 1 ] ) ||
1002                                                                     exp[ 1 ] == '{' ) ) {
1003                                                                 gotit = 1;
1004                                                                 break;
1005                                                         }
1006                                                 }
1007
1008                                                 if ( gotit == 1 ) {
1009                                                         bdn->a_expand = expand;
1010
1011                                                 } else {
1012                                                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1013                                                                 "\"expand\" used with no expansions in \"pattern\".\n",
1014                                                                 fname, lineno, 0 );
1015                                                         goto fail;
1016                                                 }
1017                                         }
1018                                         if ( sty == ACL_STYLE_SELF ) {
1019                                                 bdn->a_self_level = level;
1020
1021                                         } else {
1022                                                 if ( level < 0 ) {
1023                                                         Debug( LDAP_DEBUG_ANY,
1024                                                                 "%s: line %d: bad negative level \"%d\" "
1025                                                                 "in by DN clause\n",
1026                                                                 fname, lineno, level );
1027                                                         goto fail;
1028                                                 } else if ( level == 1 ) {
1029                                                         Debug( LDAP_DEBUG_ANY,
1030                                                                 "%s: line %d: \"onelevel\" should be used "
1031                                                                 "instead of \"level{1}\" in by DN clause\n",
1032                                                                 fname, lineno, 0 );
1033                                                 } else if ( level == 0 && sty == ACL_STYLE_LEVEL ) {
1034                                                         Debug( LDAP_DEBUG_ANY,
1035                                                                 "%s: line %d: \"base\" should be used "
1036                                                                 "instead of \"level{0}\" in by DN clause\n",
1037                                                                 fname, lineno, 0 );
1038                                                 }
1039
1040                                                 bdn->a_level = level;
1041                                         }
1042                                         continue;
1043                                 }
1044
1045                                 if ( strcasecmp( left, "dnattr" ) == 0 ) {
1046                                         if ( right == NULL || right[0] == '\0' ) {
1047                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1048                                                         "missing \"=\" in (or value after) \"%s\" "
1049                                                         "in by clause\n",
1050                                                         fname, lineno, left );
1051                                                 goto fail;
1052                                         }
1053
1054                                         if( bdn->a_at != NULL ) {
1055                                                 Debug( LDAP_DEBUG_ANY,
1056                                                         "%s: line %d: dnattr already specified.\n",
1057                                                         fname, lineno, 0 );
1058                                                 goto fail;
1059                                         }
1060
1061                                         rc = slap_str2ad( right, &bdn->a_at, &text );
1062
1063                                         if( rc != LDAP_SUCCESS ) {
1064                                                 char    buf[ SLAP_TEXT_BUFLEN ];
1065
1066                                                 snprintf( buf, sizeof( buf ),
1067                                                         "dnattr \"%s\": %s",
1068                                                         right, text );
1069                                                 Debug( LDAP_DEBUG_ANY,
1070                                                         "%s: line %d: %s\n",
1071                                                         fname, lineno, buf );
1072                                                 goto fail;
1073                                         }
1074
1075
1076                                         if( !is_at_syntax( bdn->a_at->ad_type,
1077                                                 SLAPD_DN_SYNTAX ) &&
1078                                                 !is_at_syntax( bdn->a_at->ad_type,
1079                                                 SLAPD_NAMEUID_SYNTAX ))
1080                                         {
1081                                                 char    buf[ SLAP_TEXT_BUFLEN ];
1082
1083                                                 snprintf( buf, sizeof( buf ),
1084                                                         "dnattr \"%s\": "
1085                                                         "inappropriate syntax: %s\n",
1086                                                         right,
1087                                                         bdn->a_at->ad_type->sat_syntax_oid );
1088                                                 Debug( LDAP_DEBUG_ANY,
1089                                                         "%s: line %d: %s\n",
1090                                                         fname, lineno, buf );
1091                                                 goto fail;
1092                                         }
1093
1094                                         if( bdn->a_at->ad_type->sat_equality == NULL ) {
1095                                                 Debug( LDAP_DEBUG_ANY,
1096                                                         "%s: line %d: dnattr \"%s\": "
1097                                                         "inappropriate matching (no EQUALITY)\n",
1098                                                         fname, lineno, right );
1099                                                 goto fail;
1100                                         }
1101
1102                                         continue;
1103                                 }
1104
1105                                 if ( strncasecmp( left, "group", STRLENOF( "group" ) ) == 0 ) {
1106                                         char *name = NULL;
1107                                         char *value = NULL;
1108                                         char *attr_name = SLAPD_GROUP_ATTR;
1109
1110                                         switch ( sty ) {
1111                                         case ACL_STYLE_REGEX:
1112                                                 /* legacy, tolerated */
1113                                                 Debug( LDAP_DEBUG_CONFIG | LDAP_DEBUG_ACL,
1114                                                         "%s: line %d: "
1115                                                         "deprecated group style \"regex\"; "
1116                                                         "use \"expand\" instead.\n",
1117                                                         fname, lineno, 0 );
1118                                                 sty = ACL_STYLE_EXPAND;
1119                                                 break;
1120
1121                                         case ACL_STYLE_BASE:
1122                                                 /* legal, traditional */
1123                                         case ACL_STYLE_EXPAND:
1124                                                 /* legal, substring expansion; supersedes regex */
1125                                                 break;
1126
1127                                         default:
1128                                                 /* unknown */
1129                                                 Debug( LDAP_DEBUG_ANY,
1130                                                         "%s: line %d: "
1131                                                         "inappropriate style \"%s\" in by clause.\n",
1132                                                         fname, lineno, style );
1133                                                 goto fail;
1134                                         }
1135
1136                                         if ( right == NULL || right[0] == '\0' ) {
1137                                                 Debug( LDAP_DEBUG_ANY,
1138                                                         "%s: line %d: "
1139                                                         "missing \"=\" in (or value after) \"%s\" "
1140                                                         "in by clause.\n",
1141                                                         fname, lineno, left );
1142                                                 goto fail;
1143                                         }
1144
1145                                         if ( !BER_BVISEMPTY( &b->a_group_pat ) ) {
1146                                                 Debug( LDAP_DEBUG_ANY,
1147                                                         "%s: line %d: group pattern already specified.\n",
1148                                                         fname, lineno, 0 );
1149                                                 goto fail;
1150                                         }
1151
1152                                         /* format of string is
1153                                                 "group/objectClassValue/groupAttrName" */
1154                                         if ( ( value = strchr(left, '/') ) != NULL ) {
1155                                                 *value++ = '\0';
1156                                                 if ( *value && ( name = strchr( value, '/' ) ) != NULL ) {
1157                                                         *name++ = '\0';
1158                                                 }
1159                                         }
1160
1161                                         b->a_group_style = sty;
1162                                         if ( sty == ACL_STYLE_EXPAND ) {
1163                                                 acl_regex_normalized_dn( right, &bv );
1164                                                 if ( !ber_bvccmp( &bv, '*' ) ) {
1165                                                         regtest( fname, lineno, bv.bv_val );
1166                                                 }
1167                                                 b->a_group_pat = bv;
1168
1169                                         } else {
1170                                                 ber_str2bv( right, 0, 0, &bv );
1171                                                 rc = dnNormalize( 0, NULL, NULL, &bv,
1172                                                         &b->a_group_pat, NULL );
1173                                                 if ( rc != LDAP_SUCCESS ) {
1174                                                         Debug( LDAP_DEBUG_ANY,
1175                                                                 "%s: line %d: bad DN \"%s\".\n",
1176                                                                 fname, lineno, right );
1177                                                         goto fail;
1178                                                 }
1179                                         }
1180
1181                                         if ( value && *value ) {
1182                                                 b->a_group_oc = oc_find( value );
1183                                                 *--value = '/';
1184
1185                                                 if ( b->a_group_oc == NULL ) {
1186                                                         Debug( LDAP_DEBUG_ANY,
1187                                                                 "%s: line %d: group objectclass "
1188                                                                 "\"%s\" unknown.\n",
1189                                                                 fname, lineno, value );
1190                                                         goto fail;
1191                                                 }
1192
1193                                         } else {
1194                                                 b->a_group_oc = oc_find( SLAPD_GROUP_CLASS );
1195
1196                                                 if( b->a_group_oc == NULL ) {
1197                                                         Debug( LDAP_DEBUG_ANY,
1198                                                                 "%s: line %d: group default objectclass "
1199                                                                 "\"%s\" unknown.\n",
1200                                                                 fname, lineno, SLAPD_GROUP_CLASS );
1201                                                         goto fail;
1202                                                 }
1203                                         }
1204
1205                                         if ( is_object_subclass( slap_schema.si_oc_referral,
1206                                                 b->a_group_oc ) )
1207                                         {
1208                                                 Debug( LDAP_DEBUG_ANY,
1209                                                         "%s: line %d: group objectclass \"%s\" "
1210                                                         "is subclass of referral.\n",
1211                                                         fname, lineno, value );
1212                                                 goto fail;
1213                                         }
1214
1215                                         if ( is_object_subclass( slap_schema.si_oc_alias,
1216                                                 b->a_group_oc ) )
1217                                         {
1218                                                 Debug( LDAP_DEBUG_ANY,
1219                                                         "%s: line %d: group objectclass \"%s\" "
1220                                                         "is subclass of alias.\n",
1221                                                         fname, lineno, value );
1222                                                 goto fail;
1223                                         }
1224
1225                                         if ( name && *name ) {
1226                                                 attr_name = name;
1227                                                 *--name = '/';
1228
1229                                         }
1230
1231                                         rc = slap_str2ad( attr_name, &b->a_group_at, &text );
1232                                         if ( rc != LDAP_SUCCESS ) {
1233                                                 char    buf[ SLAP_TEXT_BUFLEN ];
1234
1235                                                 snprintf( buf, sizeof( buf ),
1236                                                         "group \"%s\": %s.",
1237                                                         right, text );
1238                                                 Debug( LDAP_DEBUG_ANY,
1239                                                         "%s: line %d: %s\n",
1240                                                         fname, lineno, buf );
1241                                                 goto fail;
1242                                         }
1243
1244                                         if ( !is_at_syntax( b->a_group_at->ad_type,
1245                                                         SLAPD_DN_SYNTAX ) /* e.g. "member" */
1246                                                 && !is_at_syntax( b->a_group_at->ad_type,
1247                                                         SLAPD_NAMEUID_SYNTAX ) /* e.g. memberUID */
1248                                                 && !is_at_subtype( b->a_group_at->ad_type,
1249                                                         slap_schema.si_ad_labeledURI->ad_type ) /* e.g. memberURL */ )
1250                                         {
1251                                                 char    buf[ SLAP_TEXT_BUFLEN ];
1252
1253                                                 snprintf( buf, sizeof( buf ),
1254                                                         "group \"%s\" attr \"%s\": inappropriate syntax: %s; "
1255                                                         "must be " SLAPD_DN_SYNTAX " (DN), "
1256                                                         SLAPD_NAMEUID_SYNTAX " (NameUID) "
1257                                                         "or a subtype of labeledURI.",
1258                                                         right,
1259                                                         attr_name,
1260                                                         at_syntax( b->a_group_at->ad_type ) );
1261                                                 Debug( LDAP_DEBUG_ANY,
1262                                                         "%s: line %d: %s\n",
1263                                                         fname, lineno, buf );
1264                                                 goto fail;
1265                                         }
1266
1267
1268                                         {
1269                                                 int rc;
1270                                                 ObjectClass *ocs[2];
1271
1272                                                 ocs[0] = b->a_group_oc;
1273                                                 ocs[1] = NULL;
1274
1275                                                 rc = oc_check_allowed( b->a_group_at->ad_type,
1276                                                         ocs, NULL );
1277
1278                                                 if( rc != 0 ) {
1279                                                         char    buf[ SLAP_TEXT_BUFLEN ];
1280
1281                                                         snprintf( buf, sizeof( buf ),
1282                                                                 "group: \"%s\" not allowed by \"%s\".",
1283                                                                 b->a_group_at->ad_cname.bv_val,
1284                                                                 b->a_group_oc->soc_oid );
1285                                                         Debug( LDAP_DEBUG_ANY, "%s: line %d: %s\n",
1286                                                                 fname, lineno, buf );
1287                                                         goto fail;
1288                                                 }
1289                                         }
1290                                         continue;
1291                                 }
1292
1293                                 if ( strcasecmp( left, "peername" ) == 0 ) {
1294                                         switch ( sty ) {
1295                                         case ACL_STYLE_REGEX:
1296                                         case ACL_STYLE_BASE:
1297                                                 /* legal, traditional */
1298                                         case ACL_STYLE_EXPAND:
1299                                                 /* cheap replacement to regex for simple expansion */
1300                                         case ACL_STYLE_IP:
1301                                         case ACL_STYLE_IPV6:
1302                                         case ACL_STYLE_PATH:
1303                                                 /* legal, peername specific */
1304                                                 break;
1305
1306                                         default:
1307                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1308                                                         "inappropriate style \"%s\" in by clause.\n",
1309                                                     fname, lineno, style );
1310                                                 goto fail;
1311                                         }
1312
1313                                         if ( right == NULL || right[0] == '\0' ) {
1314                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1315                                                         "missing \"=\" in (or value after) \"%s\" "
1316                                                         "in by clause.\n",
1317                                                         fname, lineno, left );
1318                                                 goto fail;
1319                                         }
1320
1321                                         if ( !BER_BVISEMPTY( &b->a_peername_pat ) ) {
1322                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1323                                                         "peername pattern already specified.\n",
1324                                                         fname, lineno, 0 );
1325                                                 goto fail;
1326                                         }
1327
1328                                         b->a_peername_style = sty;
1329                                         if ( sty == ACL_STYLE_REGEX ) {
1330                                                 acl_regex_normalized_dn( right, &bv );
1331                                                 if ( !ber_bvccmp( &bv, '*' ) ) {
1332                                                         regtest( fname, lineno, bv.bv_val );
1333                                                 }
1334                                                 b->a_peername_pat = bv;
1335
1336                                         } else {
1337                                                 ber_str2bv( right, 0, 1, &b->a_peername_pat );
1338
1339                                                 if ( sty == ACL_STYLE_IP ) {
1340                                                         char            *addr = NULL,
1341                                                                         *mask = NULL,
1342                                                                         *port = NULL;
1343
1344                                                         split( right, '{', &addr, &port );
1345                                                         split( addr, '%', &addr, &mask );
1346
1347                                                         b->a_peername_addr = inet_addr( addr );
1348                                                         if ( b->a_peername_addr == (unsigned long)(-1) ) {
1349                                                                 /* illegal address */
1350                                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1351                                                                         "illegal peername address \"%s\".\n",
1352                                                                         fname, lineno, addr );
1353                                                                 goto fail;
1354                                                         }
1355
1356                                                         b->a_peername_mask = (unsigned long)(-1);
1357                                                         if ( mask != NULL ) {
1358                                                                 b->a_peername_mask = inet_addr( mask );
1359                                                                 if ( b->a_peername_mask ==
1360                                                                         (unsigned long)(-1) )
1361                                                                 {
1362                                                                         /* illegal mask */
1363                                                                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1364                                                                                 "illegal peername address mask "
1365                                                                                 "\"%s\".\n",
1366                                                                                 fname, lineno, mask );
1367                                                                         goto fail;
1368                                                                 }
1369                                                         }
1370
1371                                                         b->a_peername_port = -1;
1372                                                         if ( port ) {
1373                                                                 char    *end = NULL;
1374
1375                                                                 b->a_peername_port = strtol( port, &end, 10 );
1376                                                                 if ( end == port || end[0] != '}' ) {
1377                                                                         /* illegal port */
1378                                                                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1379                                                                                 "illegal peername port specification "
1380                                                                                 "\"{%s}\".\n",
1381                                                                                 fname, lineno, port );
1382                                                                         goto fail;
1383                                                                 }
1384                                                         }
1385
1386 #ifdef LDAP_PF_INET6
1387                                                 } else if ( sty == ACL_STYLE_IPV6 ) {
1388                                                         char            *addr = NULL,
1389                                                                         *mask = NULL,
1390                                                                         *port = NULL;
1391
1392                                                         split( right, '{', &addr, &port );
1393                                                         split( addr, '%', &addr, &mask );
1394
1395                                                         if ( inet_pton( AF_INET6, addr, &b->a_peername_addr6 ) != 1 ) {
1396                                                                 /* illegal address */
1397                                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1398                                                                         "illegal peername address \"%s\".\n",
1399                                                                         fname, lineno, addr );
1400                                                                 goto fail;
1401                                                         }
1402
1403                                                         if ( mask == NULL ) {
1404                                                                 mask = "FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF";
1405                                                         }
1406
1407                                                         if ( inet_pton( AF_INET6, mask, &b->a_peername_mask6 ) != 1 ) {
1408                                                                 /* illegal mask */
1409                                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1410                                                                         "illegal peername address mask "
1411                                                                         "\"%s\".\n",
1412                                                                         fname, lineno, mask );
1413                                                                 goto fail;
1414                                                         }
1415
1416                                                         b->a_peername_port = -1;
1417                                                         if ( port ) {
1418                                                                 char    *end = NULL;
1419
1420                                                                 b->a_peername_port = strtol( port, &end, 10 );
1421                                                                 if ( end == port || end[0] != '}' ) {
1422                                                                         /* illegal port */
1423                                                                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1424                                                                                 "illegal peername port specification "
1425                                                                                 "\"{%s}\".\n",
1426                                                                                 fname, lineno, port );
1427                                                                         goto fail;
1428                                                                 }
1429                                                         }
1430 #endif /* LDAP_PF_INET6 */
1431                                                 }
1432                                         }
1433                                         continue;
1434                                 }
1435
1436                                 if ( strcasecmp( left, "sockname" ) == 0 ) {
1437                                         switch ( sty ) {
1438                                         case ACL_STYLE_REGEX:
1439                                         case ACL_STYLE_BASE:
1440                                                 /* legal, traditional */
1441                                         case ACL_STYLE_EXPAND:
1442                                                 /* cheap replacement to regex for simple expansion */
1443                                                 break;
1444
1445                                         default:
1446                                                 /* unknown */
1447                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1448                                                         "inappropriate style \"%s\" in by clause\n",
1449                                                     fname, lineno, style );
1450                                                 goto fail;
1451                                         }
1452
1453                                         if ( right == NULL || right[0] == '\0' ) {
1454                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1455                                                         "missing \"=\" in (or value after) \"%s\" "
1456                                                         "in by clause\n",
1457                                                         fname, lineno, left );
1458                                                 goto fail;
1459                                         }
1460
1461                                         if ( !BER_BVISNULL( &b->a_sockname_pat ) ) {
1462                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1463                                                         "sockname pattern already specified.\n",
1464                                                         fname, lineno, 0 );
1465                                                 goto fail;
1466                                         }
1467
1468                                         b->a_sockname_style = sty;
1469                                         if ( sty == ACL_STYLE_REGEX ) {
1470                                                 acl_regex_normalized_dn( right, &bv );
1471                                                 if ( !ber_bvccmp( &bv, '*' ) ) {
1472                                                         regtest( fname, lineno, bv.bv_val );
1473                                                 }
1474                                                 b->a_sockname_pat = bv;
1475
1476                                         } else {
1477                                                 ber_str2bv( right, 0, 1, &b->a_sockname_pat );
1478                                         }
1479                                         continue;
1480                                 }
1481
1482                                 if ( strcasecmp( left, "domain" ) == 0 ) {
1483                                         switch ( sty ) {
1484                                         case ACL_STYLE_REGEX:
1485                                         case ACL_STYLE_BASE:
1486                                         case ACL_STYLE_SUBTREE:
1487                                                 /* legal, traditional */
1488                                                 break;
1489
1490                                         case ACL_STYLE_EXPAND:
1491                                                 /* tolerated: means exact,expand */
1492                                                 if ( expand ) {
1493                                                         Debug( LDAP_DEBUG_ANY,
1494                                                                 "%s: line %d: "
1495                                                                 "\"expand\" modifier "
1496                                                                 "with \"expand\" style.\n",
1497                                                                 fname, lineno, 0 );
1498                                                 }
1499                                                 sty = ACL_STYLE_BASE;
1500                                                 expand = 1;
1501                                                 break;
1502
1503                                         default:
1504                                                 /* unknown */
1505                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1506                                                         "inappropriate style \"%s\" in by clause.\n",
1507                                                     fname, lineno, style );
1508                                                 goto fail;
1509                                         }
1510
1511                                         if ( right == NULL || right[0] == '\0' ) {
1512                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1513                                                         "missing \"=\" in (or value after) \"%s\" "
1514                                                         "in by clause.\n",
1515                                                         fname, lineno, left );
1516                                                 goto fail;
1517                                         }
1518
1519                                         if ( !BER_BVISEMPTY( &b->a_domain_pat ) ) {
1520                                                 Debug( LDAP_DEBUG_ANY,
1521                                                         "%s: line %d: domain pattern already specified.\n",
1522                                                         fname, lineno, 0 );
1523                                                 goto fail;
1524                                         }
1525
1526                                         b->a_domain_style = sty;
1527                                         b->a_domain_expand = expand;
1528                                         if ( sty == ACL_STYLE_REGEX ) {
1529                                                 acl_regex_normalized_dn( right, &bv );
1530                                                 if ( !ber_bvccmp( &bv, '*' ) ) {
1531                                                         regtest( fname, lineno, bv.bv_val );
1532                                                 }
1533                                                 b->a_domain_pat = bv;
1534
1535                                         } else {
1536                                                 ber_str2bv( right, 0, 1, &b->a_domain_pat );
1537                                         }
1538                                         continue;
1539                                 }
1540
1541                                 if ( strcasecmp( left, "sockurl" ) == 0 ) {
1542                                         switch ( sty ) {
1543                                         case ACL_STYLE_REGEX:
1544                                         case ACL_STYLE_BASE:
1545                                                 /* legal, traditional */
1546                                         case ACL_STYLE_EXPAND:
1547                                                 /* cheap replacement to regex for simple expansion */
1548                                                 break;
1549
1550                                         default:
1551                                                 /* unknown */
1552                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1553                                                         "inappropriate style \"%s\" in by clause.\n",
1554                                                     fname, lineno, style );
1555                                                 goto fail;
1556                                         }
1557
1558                                         if ( right == NULL || right[0] == '\0' ) {
1559                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1560                                                         "missing \"=\" in (or value after) \"%s\" "
1561                                                         "in by clause.\n",
1562                                                         fname, lineno, left );
1563                                                 goto fail;
1564                                         }
1565
1566                                         if ( !BER_BVISEMPTY( &b->a_sockurl_pat ) ) {
1567                                                 Debug( LDAP_DEBUG_ANY,
1568                                                         "%s: line %d: sockurl pattern already specified.\n",
1569                                                         fname, lineno, 0 );
1570                                                 goto fail;
1571                                         }
1572
1573                                         b->a_sockurl_style = sty;
1574                                         if ( sty == ACL_STYLE_REGEX ) {
1575                                                 acl_regex_normalized_dn( right, &bv );
1576                                                 if ( !ber_bvccmp( &bv, '*' ) ) {
1577                                                         regtest( fname, lineno, bv.bv_val );
1578                                                 }
1579                                                 b->a_sockurl_pat = bv;
1580
1581                                         } else {
1582                                                 ber_str2bv( right, 0, 1, &b->a_sockurl_pat );
1583                                         }
1584                                         continue;
1585                                 }
1586
1587                                 if ( strcasecmp( left, "set" ) == 0 ) {
1588                                         switch ( sty ) {
1589                                                 /* deprecated */
1590                                         case ACL_STYLE_REGEX:
1591                                                 Debug( LDAP_DEBUG_CONFIG | LDAP_DEBUG_ACL,
1592                                                         "%s: line %d: "
1593                                                         "deprecated set style "
1594                                                         "\"regex\" in <by> clause; "
1595                                                         "use \"expand\" instead.\n",
1596                                                         fname, lineno, 0 );
1597                                                 sty = ACL_STYLE_EXPAND;
1598                                                 /* FALLTHRU */
1599
1600                                         case ACL_STYLE_BASE:
1601                                         case ACL_STYLE_EXPAND:
1602                                                 break;
1603
1604                                         default:
1605                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1606                                                         "inappropriate style \"%s\" in by clause.\n",
1607                                                         fname, lineno, style );
1608                                                 goto fail;
1609                                         }
1610
1611                                         if ( !BER_BVISEMPTY( &b->a_set_pat ) ) {
1612                                                 Debug( LDAP_DEBUG_ANY,
1613                                                         "%s: line %d: set attribute already specified.\n",
1614                                                         fname, lineno, 0 );
1615                                                 goto fail;
1616                                         }
1617
1618                                         if ( right == NULL || *right == '\0' ) {
1619                                                 Debug( LDAP_DEBUG_ANY,
1620                                                         "%s: line %d: no set is defined.\n",
1621                                                         fname, lineno, 0 );
1622                                                 goto fail;
1623                                         }
1624
1625                                         b->a_set_style = sty;
1626                                         ber_str2bv( right, 0, 1, &b->a_set_pat );
1627
1628                                         continue;
1629                                 }
1630
1631 #ifdef SLAP_DYNACL
1632                                 {
1633                                         char            *name = NULL,
1634                                                         *opts = NULL;
1635
1636 #if 1 /* tolerate legacy "aci" <who> */
1637                                         if ( strcasecmp( left, "aci" ) == 0 ) {
1638                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1639                                                         "undocumented deprecated \"aci\" directive "
1640                                                         "is superseded by \"dynacl/aci\".\n",
1641                                                         fname, lineno, 0 );
1642                                                 name = "aci";
1643
1644                                         } else
1645 #endif /* tolerate legacy "aci" <who> */
1646                                         if ( strncasecmp( left, "dynacl/", STRLENOF( "dynacl/" ) ) == 0 ) {
1647                                                 name = &left[ STRLENOF( "dynacl/" ) ];
1648                                                 opts = strchr( name, '/' );
1649                                                 if ( opts ) {
1650                                                         opts[ 0 ] = '\0';
1651                                                         opts++;
1652                                                 }
1653                                         }
1654
1655                                         if ( name ) {
1656                                                 if ( slap_dynacl_config( fname, lineno, b, name, opts, sty, right ) ) {
1657                                                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1658                                                                 "unable to configure dynacl \"%s\".\n",
1659                                                                 fname, lineno, name );
1660                                                         goto fail;
1661                                                 }
1662
1663                                                 continue;
1664                                         }
1665                                 }
1666 #endif /* SLAP_DYNACL */
1667
1668                                 if ( strcasecmp( left, "ssf" ) == 0 ) {
1669                                         if ( sty != ACL_STYLE_REGEX && sty != ACL_STYLE_BASE ) {
1670                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1671                                                         "inappropriate style \"%s\" in by clause.\n",
1672                                                     fname, lineno, style );
1673                                                 goto fail;
1674                                         }
1675
1676                                         if ( b->a_authz.sai_ssf ) {
1677                                                 Debug( LDAP_DEBUG_ANY,
1678                                                         "%s: line %d: ssf attribute already specified.\n",
1679                                                         fname, lineno, 0 );
1680                                                 goto fail;
1681                                         }
1682
1683                                         if ( right == NULL || *right == '\0' ) {
1684                                                 Debug( LDAP_DEBUG_ANY,
1685                                                         "%s: line %d: no ssf is defined.\n",
1686                                                         fname, lineno, 0 );
1687                                                 goto fail;
1688                                         }
1689
1690                                         if ( lutil_atou( &b->a_authz.sai_ssf, right ) != 0 ) {
1691                                                 Debug( LDAP_DEBUG_ANY,
1692                                                         "%s: line %d: unable to parse ssf value (%s).\n",
1693                                                         fname, lineno, right );
1694                                                 goto fail;
1695                                         }
1696
1697                                         if ( !b->a_authz.sai_ssf ) {
1698                                                 Debug( LDAP_DEBUG_ANY,
1699                                                         "%s: line %d: invalid ssf value (%s).\n",
1700                                                         fname, lineno, right );
1701                                                 goto fail;
1702                                         }
1703                                         continue;
1704                                 }
1705
1706                                 if ( strcasecmp( left, "transport_ssf" ) == 0 ) {
1707                                         if ( sty != ACL_STYLE_REGEX && sty != ACL_STYLE_BASE ) {
1708                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1709                                                         "inappropriate style \"%s\" in by clause.\n",
1710                                                         fname, lineno, style );
1711                                                 goto fail;
1712                                         }
1713
1714                                         if ( b->a_authz.sai_transport_ssf ) {
1715                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1716                                                         "transport_ssf attribute already specified.\n",
1717                                                         fname, lineno, 0 );
1718                                                 goto fail;
1719                                         }
1720
1721                                         if ( right == NULL || *right == '\0' ) {
1722                                                 Debug( LDAP_DEBUG_ANY,
1723                                                         "%s: line %d: no transport_ssf is defined.\n",
1724                                                         fname, lineno, 0 );
1725                                                 goto fail;
1726                                         }
1727
1728                                         if ( lutil_atou( &b->a_authz.sai_transport_ssf, right ) != 0 ) {
1729                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1730                                                         "unable to parse transport_ssf value (%s).\n",
1731                                                         fname, lineno, right );
1732                                                 goto fail;
1733                                         }
1734
1735                                         if ( !b->a_authz.sai_transport_ssf ) {
1736                                                 Debug( LDAP_DEBUG_ANY,
1737                                                         "%s: line %d: invalid transport_ssf value (%s).\n",
1738                                                         fname, lineno, right );
1739                                                 goto fail;
1740                                         }
1741                                         continue;
1742                                 }
1743
1744                                 if ( strcasecmp( left, "tls_ssf" ) == 0 ) {
1745                                         if ( sty != ACL_STYLE_REGEX && sty != ACL_STYLE_BASE ) {
1746                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1747                                                         "inappropriate style \"%s\" in by clause.\n",
1748                                                         fname, lineno, style );
1749                                                 goto fail;
1750                                         }
1751
1752                                         if ( b->a_authz.sai_tls_ssf ) {
1753                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1754                                                         "tls_ssf attribute already specified.\n",
1755                                                         fname, lineno, 0 );
1756                                                 goto fail;
1757                                         }
1758
1759                                         if ( right == NULL || *right == '\0' ) {
1760                                                 Debug( LDAP_DEBUG_ANY,
1761                                                         "%s: line %d: no tls_ssf is defined\n",
1762                                                         fname, lineno, 0 );
1763                                                 goto fail;
1764                                         }
1765
1766                                         if ( lutil_atou( &b->a_authz.sai_tls_ssf, right ) != 0 ) {
1767                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1768                                                         "unable to parse tls_ssf value (%s).\n",
1769                                                         fname, lineno, right );
1770                                                 goto fail;
1771                                         }
1772
1773                                         if ( !b->a_authz.sai_tls_ssf ) {
1774                                                 Debug( LDAP_DEBUG_ANY,
1775                                                         "%s: line %d: invalid tls_ssf value (%s).\n",
1776                                                         fname, lineno, right );
1777                                                 goto fail;
1778                                         }
1779                                         continue;
1780                                 }
1781
1782                                 if ( strcasecmp( left, "sasl_ssf" ) == 0 ) {
1783                                         if ( sty != ACL_STYLE_REGEX && sty != ACL_STYLE_BASE ) {
1784                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1785                                                         "inappropriate style \"%s\" in by clause.\n",
1786                                                         fname, lineno, style );
1787                                                 goto fail;
1788                                         }
1789
1790                                         if ( b->a_authz.sai_sasl_ssf ) {
1791                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1792                                                         "sasl_ssf attribute already specified.\n",
1793                                                         fname, lineno, 0 );
1794                                                 goto fail;
1795                                         }
1796
1797                                         if ( right == NULL || *right == '\0' ) {
1798                                                 Debug( LDAP_DEBUG_ANY,
1799                                                         "%s: line %d: no sasl_ssf is defined.\n",
1800                                                         fname, lineno, 0 );
1801                                                 goto fail;
1802                                         }
1803
1804                                         if ( lutil_atou( &b->a_authz.sai_sasl_ssf, right ) != 0 ) {
1805                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1806                                                         "unable to parse sasl_ssf value (%s).\n",
1807                                                         fname, lineno, right );
1808                                                 goto fail;
1809                                         }
1810
1811                                         if ( !b->a_authz.sai_sasl_ssf ) {
1812                                                 Debug( LDAP_DEBUG_ANY,
1813                                                         "%s: line %d: invalid sasl_ssf value (%s).\n",
1814                                                         fname, lineno, right );
1815                                                 goto fail;
1816                                         }
1817                                         continue;
1818                                 }
1819
1820                                 if ( right != NULL ) {
1821                                         /* unsplit */
1822                                         right[-1] = '=';
1823                                 }
1824                                 break;
1825                         }
1826
1827                         if ( i == argc || ( strcasecmp( left, "stop" ) == 0 ) ) {
1828                                 /* out of arguments or plain stop */
1829
1830                                 ACL_PRIV_ASSIGN( b->a_access_mask, ACL_PRIV_ADDITIVE );
1831                                 ACL_PRIV_SET( b->a_access_mask, ACL_PRIV_NONE);
1832                                 b->a_type = ACL_STOP;
1833
1834                                 access_append( &a->acl_access, b );
1835                                 continue;
1836                         }
1837
1838                         if ( strcasecmp( left, "continue" ) == 0 ) {
1839                                 /* plain continue */
1840
1841                                 ACL_PRIV_ASSIGN( b->a_access_mask, ACL_PRIV_ADDITIVE );
1842                                 ACL_PRIV_SET( b->a_access_mask, ACL_PRIV_NONE);
1843                                 b->a_type = ACL_CONTINUE;
1844
1845                                 access_append( &a->acl_access, b );
1846                                 continue;
1847                         }
1848
1849                         if ( strcasecmp( left, "break" ) == 0 ) {
1850                                 /* plain continue */
1851
1852                                 ACL_PRIV_ASSIGN(b->a_access_mask, ACL_PRIV_ADDITIVE);
1853                                 ACL_PRIV_SET( b->a_access_mask, ACL_PRIV_NONE);
1854                                 b->a_type = ACL_BREAK;
1855
1856                                 access_append( &a->acl_access, b );
1857                                 continue;
1858                         }
1859
1860                         if ( strcasecmp( left, "by" ) == 0 ) {
1861                                 /* we've gone too far */
1862                                 --i;
1863                                 ACL_PRIV_ASSIGN( b->a_access_mask, ACL_PRIV_ADDITIVE );
1864                                 ACL_PRIV_SET( b->a_access_mask, ACL_PRIV_NONE);
1865                                 b->a_type = ACL_STOP;
1866
1867                                 access_append( &a->acl_access, b );
1868                                 continue;
1869                         }
1870
1871                         /* get <access> */
1872                         {
1873                                 char    *lleft = left;
1874
1875                                 if ( strncasecmp( left, "self", STRLENOF( "self" ) ) == 0 ) {
1876                                         b->a_dn_self = 1;
1877                                         lleft = &left[ STRLENOF( "self" ) ];
1878
1879                                 } else if ( strncasecmp( left, "realself", STRLENOF( "realself" ) ) == 0 ) {
1880                                         b->a_realdn_self = 1;
1881                                         lleft = &left[ STRLENOF( "realself" ) ];
1882                                 }
1883
1884                                 ACL_PRIV_ASSIGN( b->a_access_mask, str2accessmask( lleft ) );
1885                         }
1886
1887                         if ( ACL_IS_INVALID( b->a_access_mask ) ) {
1888                                 Debug( LDAP_DEBUG_ANY,
1889                                         "%s: line %d: expecting <access> got \"%s\".\n",
1890                                         fname, lineno, left );
1891                                 goto fail;
1892                         }
1893
1894                         b->a_type = ACL_STOP;
1895
1896                         if ( ++i == argc ) {
1897                                 /* out of arguments or plain stop */
1898                                 access_append( &a->acl_access, b );
1899                                 continue;
1900                         }
1901
1902                         if ( strcasecmp( argv[i], "continue" ) == 0 ) {
1903                                 /* plain continue */
1904                                 b->a_type = ACL_CONTINUE;
1905
1906                         } else if ( strcasecmp( argv[i], "break" ) == 0 ) {
1907                                 /* plain continue */
1908                                 b->a_type = ACL_BREAK;
1909
1910                         } else if ( strcasecmp( argv[i], "stop" ) != 0 ) {
1911                                 /* gone to far */
1912                                 i--;
1913                         }
1914
1915                         access_append( &a->acl_access, b );
1916                         b = NULL;
1917
1918                 } else {
1919                         Debug( LDAP_DEBUG_ANY,
1920                                 "%s: line %d: expecting \"to\" "
1921                                 "or \"by\" got \"%s\"\n",
1922                                 fname, lineno, argv[i] );
1923                         goto fail;
1924                 }
1925         }
1926
1927         /* if we have no real access clause, complain and do nothing */
1928         if ( a == NULL ) {
1929                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1930                         "warning: no access clause(s) specified in access line.\n",
1931                         fname, lineno, 0 );
1932                 goto fail;
1933
1934         } else {
1935 #ifdef LDAP_DEBUG
1936                 if ( slap_debug & LDAP_DEBUG_ACL ) {
1937                         print_acl( be, a );
1938                 }
1939 #endif
1940
1941                 if ( a->acl_access == NULL ) {
1942                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1943                                 "warning: no by clause(s) specified in access line.\n",
1944                                 fname, lineno, 0 );
1945                         goto fail;
1946                 }
1947
1948                 if ( be != NULL ) {
1949                         if ( be->be_nsuffix == NULL ) {
1950                                 Debug( LDAP_DEBUG_ACL, "%s: line %d: warning: "
1951                                         "scope checking needs suffix before ACLs.\n",
1952                                         fname, lineno, 0 );
1953                                 /* go ahead, since checking is not authoritative */
1954                         } else if ( !BER_BVISNULL( &be->be_nsuffix[ 1 ] ) ) {
1955                                 Debug( LDAP_DEBUG_ACL, "%s: line %d: warning: "
1956                                         "scope checking only applies to single-valued "
1957                                         "suffix databases\n",
1958                                         fname, lineno, 0 );
1959                                 /* go ahead, since checking is not authoritative */
1960                         } else {
1961                                 switch ( check_scope( be, a ) ) {
1962                                 case ACL_SCOPE_UNKNOWN:
1963                                         Debug( LDAP_DEBUG_ACL, "%s: line %d: warning: "
1964                                                 "cannot assess the validity of the ACL scope within "
1965                                                 "backend naming context\n",
1966                                                 fname, lineno, 0 );
1967                                         break;
1968
1969                                 case ACL_SCOPE_WARN:
1970                                         Debug( LDAP_DEBUG_ACL, "%s: line %d: warning: "
1971                                                 "ACL could be out of scope within backend naming context\n",
1972                                                 fname, lineno, 0 );
1973                                         break;
1974
1975                                 case ACL_SCOPE_PARTIAL:
1976                                         Debug( LDAP_DEBUG_ACL, "%s: line %d: warning: "
1977                                                 "ACL appears to be partially out of scope within "
1978                                                 "backend naming context\n",
1979                                                 fname, lineno, 0 );
1980                                         break;
1981
1982                                 case ACL_SCOPE_ERR:
1983                                         Debug( LDAP_DEBUG_ACL, "%s: line %d: warning: "
1984                                                 "ACL appears to be out of scope within "
1985                                                 "backend naming context\n",
1986                                                 fname, lineno, 0 );
1987                                         break;
1988
1989                                 default:
1990                                         break;
1991                                 }
1992                         }
1993                         acl_append( &be->be_acl, a, pos );
1994
1995                 } else {
1996                         acl_append( &frontendDB->be_acl, a, pos );
1997                 }
1998         }
1999
2000         return 0;
2001
2002 fail:
2003         if ( b ) access_free( b );
2004         if ( a ) acl_free( a );
2005         return acl_usage();
2006 }
2007
2008 char *
2009 accessmask2str( slap_mask_t mask, char *buf, int debug )
2010 {
2011         int     none = 1;
2012         char    *ptr = buf;
2013
2014         assert( buf != NULL );
2015
2016         if ( ACL_IS_INVALID( mask ) ) {
2017                 return "invalid";
2018         }
2019
2020         buf[0] = '\0';
2021
2022         if ( ACL_IS_LEVEL( mask ) ) {
2023                 if ( ACL_LVL_IS_NONE(mask) ) {
2024                         ptr = lutil_strcopy( ptr, "none" );
2025
2026                 } else if ( ACL_LVL_IS_DISCLOSE(mask) ) {
2027                         ptr = lutil_strcopy( ptr, "disclose" );
2028
2029                 } else if ( ACL_LVL_IS_AUTH(mask) ) {
2030                         ptr = lutil_strcopy( ptr, "auth" );
2031
2032                 } else if ( ACL_LVL_IS_COMPARE(mask) ) {
2033                         ptr = lutil_strcopy( ptr, "compare" );
2034
2035                 } else if ( ACL_LVL_IS_SEARCH(mask) ) {
2036                         ptr = lutil_strcopy( ptr, "search" );
2037
2038                 } else if ( ACL_LVL_IS_READ(mask) ) {
2039                         ptr = lutil_strcopy( ptr, "read" );
2040
2041                 } else if ( ACL_LVL_IS_WRITE(mask) ) {
2042                         ptr = lutil_strcopy( ptr, "write" );
2043
2044                 } else if ( ACL_LVL_IS_WADD(mask) ) {
2045                         ptr = lutil_strcopy( ptr, "add" );
2046
2047                 } else if ( ACL_LVL_IS_WDEL(mask) ) {
2048                         ptr = lutil_strcopy( ptr, "delete" );
2049
2050                 } else if ( ACL_LVL_IS_MANAGE(mask) ) {
2051                         ptr = lutil_strcopy( ptr, "manage" );
2052
2053                 } else {
2054                         ptr = lutil_strcopy( ptr, "unknown" );
2055                 }
2056
2057                 if ( !debug ) {
2058                         *ptr = '\0';
2059                         return buf;
2060                 }
2061                 *ptr++ = '(';
2062         }
2063
2064         if( ACL_IS_ADDITIVE( mask ) ) {
2065                 *ptr++ = '+';
2066
2067         } else if( ACL_IS_SUBTRACTIVE( mask ) ) {
2068                 *ptr++ = '-';
2069
2070         } else {
2071                 *ptr++ = '=';
2072         }
2073
2074         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_MANAGE) ) {
2075                 none = 0;
2076                 *ptr++ = 'm';
2077         }
2078
2079         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_WRITE) ) {
2080                 none = 0;
2081                 *ptr++ = 'w';
2082
2083         } else if ( ACL_PRIV_ISSET(mask, ACL_PRIV_WADD) ) {
2084                 none = 0;
2085                 *ptr++ = 'a';
2086
2087         } else if ( ACL_PRIV_ISSET(mask, ACL_PRIV_WDEL) ) {
2088                 none = 0;
2089                 *ptr++ = 'z';
2090         }
2091
2092         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_READ) ) {
2093                 none = 0;
2094                 *ptr++ = 'r';
2095         }
2096
2097         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_SEARCH) ) {
2098                 none = 0;
2099                 *ptr++ = 's';
2100         }
2101
2102         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_COMPARE) ) {
2103                 none = 0;
2104                 *ptr++ = 'c';
2105         }
2106
2107         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_AUTH) ) {
2108                 none = 0;
2109                 *ptr++ = 'x';
2110         }
2111
2112         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_DISCLOSE) ) {
2113                 none = 0;
2114                 *ptr++ = 'd';
2115         }
2116
2117         if ( none && ACL_PRIV_ISSET(mask, ACL_PRIV_NONE) ) {
2118                 none = 0;
2119                 *ptr++ = '0';
2120         }
2121
2122         if ( none ) {
2123                 ptr = buf;
2124         }
2125
2126         if ( ACL_IS_LEVEL( mask ) ) {
2127                 *ptr++ = ')';
2128         }
2129
2130         *ptr = '\0';
2131
2132         return buf;
2133 }
2134
2135 slap_mask_t
2136 str2accessmask( const char *str )
2137 {
2138         slap_mask_t     mask;
2139
2140         if( !ASCII_ALPHA(str[0]) ) {
2141                 int i;
2142
2143                 if ( str[0] == '=' ) {
2144                         ACL_INIT(mask);
2145
2146                 } else if( str[0] == '+' ) {
2147                         ACL_PRIV_ASSIGN(mask, ACL_PRIV_ADDITIVE);
2148
2149                 } else if( str[0] == '-' ) {
2150                         ACL_PRIV_ASSIGN(mask, ACL_PRIV_SUBSTRACTIVE);
2151
2152                 } else {
2153                         ACL_INVALIDATE(mask);
2154                         return mask;
2155                 }
2156
2157                 for( i=1; str[i] != '\0'; i++ ) {
2158                         if( TOLOWER((unsigned char) str[i]) == 'm' ) {
2159                                 ACL_PRIV_SET(mask, ACL_PRIV_MANAGE);
2160
2161                         } else if( TOLOWER((unsigned char) str[i]) == 'w' ) {
2162                                 ACL_PRIV_SET(mask, ACL_PRIV_WRITE);
2163
2164                         } else if( TOLOWER((unsigned char) str[i]) == 'a' ) {
2165                                 ACL_PRIV_SET(mask, ACL_PRIV_WADD);
2166
2167                         } else if( TOLOWER((unsigned char) str[i]) == 'z' ) {
2168                                 ACL_PRIV_SET(mask, ACL_PRIV_WDEL);
2169
2170                         } else if( TOLOWER((unsigned char) str[i]) == 'r' ) {
2171                                 ACL_PRIV_SET(mask, ACL_PRIV_READ);
2172
2173                         } else if( TOLOWER((unsigned char) str[i]) == 's' ) {
2174                                 ACL_PRIV_SET(mask, ACL_PRIV_SEARCH);
2175
2176                         } else if( TOLOWER((unsigned char) str[i]) == 'c' ) {
2177                                 ACL_PRIV_SET(mask, ACL_PRIV_COMPARE);
2178
2179                         } else if( TOLOWER((unsigned char) str[i]) == 'x' ) {
2180                                 ACL_PRIV_SET(mask, ACL_PRIV_AUTH);
2181
2182                         } else if( TOLOWER((unsigned char) str[i]) == 'd' ) {
2183                                 ACL_PRIV_SET(mask, ACL_PRIV_DISCLOSE);
2184
2185                         } else if( str[i] == '0' ) {
2186                                 ACL_PRIV_SET(mask, ACL_PRIV_NONE);
2187
2188                         } else {
2189                                 ACL_INVALIDATE(mask);
2190                                 return mask;
2191                         }
2192                 }
2193
2194                 return mask;
2195         }
2196
2197         if ( strcasecmp( str, "none" ) == 0 ) {
2198                 ACL_LVL_ASSIGN_NONE(mask);
2199
2200         } else if ( strcasecmp( str, "disclose" ) == 0 ) {
2201                 ACL_LVL_ASSIGN_DISCLOSE(mask);
2202
2203         } else if ( strcasecmp( str, "auth" ) == 0 ) {
2204                 ACL_LVL_ASSIGN_AUTH(mask);
2205
2206         } else if ( strcasecmp( str, "compare" ) == 0 ) {
2207                 ACL_LVL_ASSIGN_COMPARE(mask);
2208
2209         } else if ( strcasecmp( str, "search" ) == 0 ) {
2210                 ACL_LVL_ASSIGN_SEARCH(mask);
2211
2212         } else if ( strcasecmp( str, "read" ) == 0 ) {
2213                 ACL_LVL_ASSIGN_READ(mask);
2214
2215         } else if ( strcasecmp( str, "add" ) == 0 ) {
2216                 ACL_LVL_ASSIGN_WADD(mask);
2217
2218         } else if ( strcasecmp( str, "delete" ) == 0 ) {
2219                 ACL_LVL_ASSIGN_WDEL(mask);
2220
2221         } else if ( strcasecmp( str, "write" ) == 0 ) {
2222                 ACL_LVL_ASSIGN_WRITE(mask);
2223
2224         } else if ( strcasecmp( str, "manage" ) == 0 ) {
2225                 ACL_LVL_ASSIGN_MANAGE(mask);
2226
2227         } else {
2228                 ACL_INVALIDATE( mask );
2229         }
2230
2231         return mask;
2232 }
2233
2234 static int
2235 acl_usage( void )
2236 {
2237         char *access =
2238                 "<access clause> ::= access to <what> "
2239                                 "[ by <who> [ <access> ] [ <control> ] ]+ \n";
2240         char *what =
2241                 "<what> ::= * | dn[.<dnstyle>=<DN>] [filter=<filter>] [attrs=<attrspec>]\n"
2242                 "<attrspec> ::= <attrname> [val[/<matchingRule>][.<attrstyle>]=<value>] | <attrlist>\n"
2243                 "<attrlist> ::= <attr> [ , <attrlist> ]\n"
2244                 "<attr> ::= <attrname> | @<objectClass> | !<objectClass> | entry | children\n";
2245
2246         char *who =
2247                 "<who> ::= [ * | anonymous | users | self | dn[.<dnstyle>]=<DN> ]\n"
2248                         "\t[ realanonymous | realusers | realself | realdn[.<dnstyle>]=<DN> ]\n"
2249                         "\t[dnattr=<attrname>]\n"
2250                         "\t[realdnattr=<attrname>]\n"
2251                         "\t[group[/<objectclass>[/<attrname>]][.<style>]=<group>]\n"
2252                         "\t[peername[.<peernamestyle>]=<peer>] [sockname[.<style>]=<name>]\n"
2253                         "\t[domain[.<domainstyle>]=<domain>] [sockurl[.<style>]=<url>]\n"
2254 #ifdef SLAP_DYNACL
2255                         "\t[dynacl/<name>[/<options>][.<dynstyle>][=<pattern>]]\n"
2256 #endif /* SLAP_DYNACL */
2257                         "\t[ssf=<n>] [transport_ssf=<n>] [tls_ssf=<n>] [sasl_ssf=<n>]\n"
2258                 "<style> ::= exact | regex | base(Object)\n"
2259                 "<dnstyle> ::= base(Object) | one(level) | sub(tree) | children | "
2260                         "exact | regex\n"
2261                 "<attrstyle> ::= exact | regex | base(Object) | one(level) | "
2262                         "sub(tree) | children\n"
2263                 "<peernamestyle> ::= exact | regex | ip | ipv6 | path\n"
2264                 "<domainstyle> ::= exact | regex | base(Object) | sub(tree)\n"
2265                 "<access> ::= [[real]self]{<level>|<priv>}\n"
2266                 "<level> ::= none|disclose|auth|compare|search|read|{write|add|delete}|manage\n"
2267                 "<priv> ::= {=|+|-}{0|d|x|c|s|r|{w|a|z}|m}+\n"
2268                 "<control> ::= [ stop | continue | break ]\n"
2269 #ifdef SLAP_DYNACL
2270 #ifdef SLAPD_ACI_ENABLED
2271                 "dynacl:\n"
2272                 "\t<name>=ACI\t<pattern>=<attrname>\n"
2273 #endif /* SLAPD_ACI_ENABLED */
2274 #endif /* ! SLAP_DYNACL */
2275                 "";
2276
2277         Debug( LDAP_DEBUG_ANY, "%s%s%s\n", access, what, who );
2278
2279         return 1;
2280 }
2281
2282 /*
2283  * Set pattern to a "normalized" DN from src.
2284  * At present it simply eats the (optional) space after
2285  * a RDN separator (,)
2286  * Eventually will evolve in a more complete normalization
2287  */
2288 static void
2289 acl_regex_normalized_dn(
2290         const char *src,
2291         struct berval *pattern )
2292 {
2293         char *str, *p;
2294         ber_len_t len;
2295
2296         str = ch_strdup( src );
2297         len = strlen( src );
2298
2299         for ( p = str; p && p[0]; p++ ) {
2300                 /* escape */
2301                 if ( p[0] == '\\' && p[1] ) {
2302                         /*
2303                          * if escaping a hex pair we should
2304                          * increment p twice; however, in that
2305                          * case the second hex number does
2306                          * no harm
2307                          */
2308                         p++;
2309                 }
2310
2311                 if ( p[0] == ',' && p[1] == ' ' ) {
2312                         char *q;
2313
2314                         /*
2315                          * too much space should be an error if we are pedantic
2316                          */
2317                         for ( q = &p[2]; q[0] == ' '; q++ ) {
2318                                 /* DO NOTHING */ ;
2319                         }
2320                         AC_MEMCPY( p+1, q, len-(q-str)+1);
2321                 }
2322         }
2323         pattern->bv_val = str;
2324         pattern->bv_len = p - str;
2325
2326         return;
2327 }
2328
2329 static void
2330 split(
2331     char        *line,
2332     int         splitchar,
2333     char        **left,
2334     char        **right )
2335 {
2336         *left = line;
2337         if ( (*right = strchr( line, splitchar )) != NULL ) {
2338                 *((*right)++) = '\0';
2339         }
2340 }
2341
2342 static void
2343 access_append( Access **l, Access *a )
2344 {
2345         for ( ; *l != NULL; l = &(*l)->a_next ) {
2346                 ;       /* Empty */
2347         }
2348
2349         *l = a;
2350 }
2351
2352 void
2353 acl_append( AccessControl **l, AccessControl *a, int pos )
2354 {
2355         int i;
2356
2357         for (i=0 ; i != pos && *l != NULL; l = &(*l)->acl_next, i++ ) {
2358                 ;       /* Empty */
2359         }
2360         if ( *l && a )
2361                 a->acl_next = *l;
2362         *l = a;
2363 }
2364
2365 static void
2366 access_free( Access *a )
2367 {
2368         if ( !BER_BVISNULL( &a->a_dn_pat ) ) {
2369                 free( a->a_dn_pat.bv_val );
2370         }
2371         if ( !BER_BVISNULL( &a->a_realdn_pat ) ) {
2372                 free( a->a_realdn_pat.bv_val );
2373         }
2374         if ( !BER_BVISNULL( &a->a_peername_pat ) ) {
2375                 free( a->a_peername_pat.bv_val );
2376         }
2377         if ( !BER_BVISNULL( &a->a_sockname_pat ) ) {
2378                 free( a->a_sockname_pat.bv_val );
2379         }
2380         if ( !BER_BVISNULL( &a->a_domain_pat ) ) {
2381                 free( a->a_domain_pat.bv_val );
2382         }
2383         if ( !BER_BVISNULL( &a->a_sockurl_pat ) ) {
2384                 free( a->a_sockurl_pat.bv_val );
2385         }
2386         if ( !BER_BVISNULL( &a->a_set_pat ) ) {
2387                 free( a->a_set_pat.bv_val );
2388         }
2389         if ( !BER_BVISNULL( &a->a_group_pat ) ) {
2390                 free( a->a_group_pat.bv_val );
2391         }
2392 #ifdef SLAP_DYNACL
2393         if ( a->a_dynacl != NULL ) {
2394                 slap_dynacl_t   *da;
2395                 for ( da = a->a_dynacl; da; ) {
2396                         slap_dynacl_t   *tmp = da;
2397
2398                         da = da->da_next;
2399
2400                         if ( tmp->da_destroy ) {
2401                                 tmp->da_destroy( tmp->da_private );
2402                         }
2403
2404                         ch_free( tmp );
2405                 }
2406         }
2407 #endif /* SLAP_DYNACL */
2408         free( a );
2409 }
2410
2411 void
2412 acl_free( AccessControl *a )
2413 {
2414         Access *n;
2415         AttributeName *an;
2416
2417         if ( a->acl_filter ) {
2418                 filter_free( a->acl_filter );
2419         }
2420         if ( !BER_BVISNULL( &a->acl_dn_pat ) ) {
2421                 if ( a->acl_dn_style == ACL_STYLE_REGEX ) {
2422                         regfree( &a->acl_dn_re );
2423                 }
2424                 free ( a->acl_dn_pat.bv_val );
2425         }
2426         if ( a->acl_attrs ) {
2427                 for ( an = a->acl_attrs; !BER_BVISNULL( &an->an_name ); an++ ) {
2428                         free( an->an_name.bv_val );
2429                 }
2430                 free( a->acl_attrs );
2431
2432                 if ( a->acl_attrval_style == ACL_STYLE_REGEX ) {
2433                         regfree( &a->acl_attrval_re );
2434                 }
2435
2436                 if ( !BER_BVISNULL( &a->acl_attrval ) ) {
2437                         ber_memfree( a->acl_attrval.bv_val );
2438                 }
2439         }
2440         for ( ; a->acl_access; a->acl_access = n ) {
2441                 n = a->acl_access->a_next;
2442                 access_free( a->acl_access );
2443         }
2444         free( a );
2445 }
2446
2447 void
2448 acl_destroy( AccessControl *a )
2449 {
2450         AccessControl *n;
2451
2452         for ( ; a; a = n ) {
2453                 n = a->acl_next;
2454                 acl_free( a );
2455         }
2456
2457         if ( !BER_BVISNULL( &aclbuf ) ) {
2458                 ch_free( aclbuf.bv_val );
2459                 BER_BVZERO( &aclbuf );
2460         }
2461 }
2462
2463 char *
2464 access2str( slap_access_t access )
2465 {
2466         if ( access == ACL_NONE ) {
2467                 return "none";
2468
2469         } else if ( access == ACL_DISCLOSE ) {
2470                 return "disclose";
2471
2472         } else if ( access == ACL_AUTH ) {
2473                 return "auth";
2474
2475         } else if ( access == ACL_COMPARE ) {
2476                 return "compare";
2477
2478         } else if ( access == ACL_SEARCH ) {
2479                 return "search";
2480
2481         } else if ( access == ACL_READ ) {
2482                 return "read";
2483
2484         } else if ( access == ACL_WRITE ) {
2485                 return "write";
2486
2487         } else if ( access == ACL_WADD ) {
2488                 return "add";
2489
2490         } else if ( access == ACL_WDEL ) {
2491                 return "delete";
2492
2493         } else if ( access == ACL_MANAGE ) {
2494                 return "manage";
2495
2496         }
2497
2498         return "unknown";
2499 }
2500
2501 slap_access_t
2502 str2access( const char *str )
2503 {
2504         if ( strcasecmp( str, "none" ) == 0 ) {
2505                 return ACL_NONE;
2506
2507         } else if ( strcasecmp( str, "disclose" ) == 0 ) {
2508                 return ACL_DISCLOSE;
2509
2510         } else if ( strcasecmp( str, "auth" ) == 0 ) {
2511                 return ACL_AUTH;
2512
2513         } else if ( strcasecmp( str, "compare" ) == 0 ) {
2514                 return ACL_COMPARE;
2515
2516         } else if ( strcasecmp( str, "search" ) == 0 ) {
2517                 return ACL_SEARCH;
2518
2519         } else if ( strcasecmp( str, "read" ) == 0 ) {
2520                 return ACL_READ;
2521
2522         } else if ( strcasecmp( str, "write" ) == 0 ) {
2523                 return ACL_WRITE;
2524
2525         } else if ( strcasecmp( str, "add" ) == 0 ) {
2526                 return ACL_WADD;
2527
2528         } else if ( strcasecmp( str, "delete" ) == 0 ) {
2529                 return ACL_WDEL;
2530
2531         } else if ( strcasecmp( str, "manage" ) == 0 ) {
2532                 return ACL_MANAGE;
2533         }
2534
2535         return( ACL_INVALID_ACCESS );
2536 }
2537
2538 static char *
2539 safe_strncopy( char *ptr, const char *src, size_t n, struct berval *buf )
2540 {
2541         while ( ptr + n >= buf->bv_val + buf->bv_len ) {
2542                 char *tmp = ch_realloc( buf->bv_val, 2*buf->bv_len );
2543                 if ( tmp == NULL ) {
2544                         return NULL;
2545                 }
2546                 ptr = tmp + (ptr - buf->bv_val);
2547                 buf->bv_val = tmp;
2548                 buf->bv_len *= 2;
2549         }
2550
2551         return lutil_strncopy( ptr, src, n );
2552 }
2553
2554 static char *
2555 safe_strcopy( char *ptr, const char *s, struct berval *buf )
2556 {
2557         size_t n = strlen( s );
2558
2559         return safe_strncopy( ptr, s, n, buf );
2560 }
2561
2562 static char *
2563 safe_strbvcopy( char *ptr, const struct berval *bv, struct berval *buf )
2564 {
2565         return safe_strncopy( ptr, bv->bv_val, bv->bv_len, buf );
2566 }
2567
2568 #define acl_safe_strcopy( ptr, s ) safe_strcopy( (ptr), (s), &aclbuf )
2569 #define acl_safe_strncopy( ptr, s, n ) safe_strncopy( (ptr), (s), (n), &aclbuf )
2570 #define acl_safe_strbvcopy( ptr, bv ) safe_strbvcopy( (ptr), (bv), &aclbuf )
2571
2572 static char *
2573 dnaccess2text( slap_dn_access *bdn, char *ptr, int is_realdn )
2574 {
2575         *ptr++ = ' ';
2576
2577         if ( is_realdn ) {
2578                 ptr = acl_safe_strcopy( ptr, "real" );
2579         }
2580
2581         if ( ber_bvccmp( &bdn->a_pat, '*' ) ||
2582                 bdn->a_style == ACL_STYLE_ANONYMOUS ||
2583                 bdn->a_style == ACL_STYLE_USERS ||
2584                 bdn->a_style == ACL_STYLE_SELF )
2585         {
2586                 if ( is_realdn ) {
2587                         assert( ! ber_bvccmp( &bdn->a_pat, '*' ) );
2588                 }
2589
2590                 ptr = acl_safe_strbvcopy( ptr, &bdn->a_pat );
2591                 if ( bdn->a_style == ACL_STYLE_SELF && bdn->a_self_level != 0 ) {
2592                         char buf[SLAP_TEXT_BUFLEN];
2593                         int n = snprintf( buf, sizeof(buf), ".level{%d}", bdn->a_self_level );
2594                         if ( n > 0 ) {
2595                                 ptr = acl_safe_strncopy( ptr, buf, n );
2596                         } /* else ? */
2597                 }
2598
2599         } else {
2600                 ptr = acl_safe_strcopy( ptr, "dn." );
2601                 if ( bdn->a_style == ACL_STYLE_BASE )
2602                         ptr = acl_safe_strcopy( ptr, style_base );
2603                 else
2604                         ptr = acl_safe_strcopy( ptr, style_strings[bdn->a_style] );
2605                 if ( bdn->a_style == ACL_STYLE_LEVEL ) {
2606                         char buf[SLAP_TEXT_BUFLEN];
2607                         int n = snprintf( buf, sizeof(buf), "{%d}", bdn->a_level );
2608                         if ( n > 0 ) {
2609                                 ptr = acl_safe_strncopy( ptr, buf, n );
2610                         } /* else ? */
2611                 }
2612                 if ( bdn->a_expand ) {
2613                         ptr = acl_safe_strcopy( ptr, ",expand" );
2614                 }
2615                 ptr = acl_safe_strcopy( ptr, "=\"" );
2616                 ptr = acl_safe_strbvcopy( ptr, &bdn->a_pat );
2617                 ptr = acl_safe_strcopy( ptr, "\"" );
2618         }
2619         return ptr;
2620 }
2621
2622 static char *
2623 access2text( Access *b, char *ptr )
2624 {
2625         char maskbuf[ACCESSMASK_MAXLEN];
2626
2627         ptr = acl_safe_strcopy( ptr, "\tby" );
2628
2629         if ( !BER_BVISEMPTY( &b->a_dn_pat ) ) {
2630                 ptr = dnaccess2text( &b->a_dn, ptr, 0 );
2631         }
2632         if ( b->a_dn_at ) {
2633                 ptr = acl_safe_strcopy( ptr, " dnattr=" );
2634                 ptr = acl_safe_strbvcopy( ptr, &b->a_dn_at->ad_cname );
2635         }
2636
2637         if ( !BER_BVISEMPTY( &b->a_realdn_pat ) ) {
2638                 ptr = dnaccess2text( &b->a_realdn, ptr, 1 );
2639         }
2640         if ( b->a_realdn_at ) {
2641                 ptr = acl_safe_strcopy( ptr, " realdnattr=" );
2642                 ptr = acl_safe_strbvcopy( ptr, &b->a_realdn_at->ad_cname );
2643         }
2644
2645         if ( !BER_BVISEMPTY( &b->a_group_pat ) ) {
2646                 ptr = acl_safe_strcopy( ptr, " group/" );
2647                 ptr = acl_safe_strcopy( ptr, b->a_group_oc ?
2648                         b->a_group_oc->soc_cname.bv_val : SLAPD_GROUP_CLASS );
2649                 ptr = acl_safe_strcopy( ptr, "/" );
2650                 ptr = acl_safe_strcopy( ptr, b->a_group_at ?
2651                         b->a_group_at->ad_cname.bv_val : SLAPD_GROUP_ATTR );
2652                 ptr = acl_safe_strcopy( ptr, "." );
2653                 ptr = acl_safe_strcopy( ptr, style_strings[b->a_group_style] );
2654                 ptr = acl_safe_strcopy( ptr, "=\"" );
2655                 ptr = acl_safe_strbvcopy( ptr, &b->a_group_pat );
2656                 ptr = acl_safe_strcopy( ptr, "\"" );
2657         }
2658
2659         if ( !BER_BVISEMPTY( &b->a_peername_pat ) ) {
2660                 ptr = acl_safe_strcopy( ptr, " peername" );
2661                 ptr = acl_safe_strcopy( ptr, "." );
2662                 ptr = acl_safe_strcopy( ptr, style_strings[b->a_peername_style] );
2663                 ptr = acl_safe_strcopy( ptr, "=\"" );
2664                 ptr = acl_safe_strbvcopy( ptr, &b->a_peername_pat );
2665                 ptr = acl_safe_strcopy( ptr, "\"" );
2666         }
2667
2668         if ( !BER_BVISEMPTY( &b->a_sockname_pat ) ) {
2669                 ptr = acl_safe_strcopy( ptr, " sockname" );
2670                 ptr = acl_safe_strcopy( ptr, "." );
2671                 ptr = acl_safe_strcopy( ptr, style_strings[b->a_sockname_style] );
2672                 ptr = acl_safe_strcopy( ptr, "=\"" );
2673                 ptr = acl_safe_strbvcopy( ptr, &b->a_sockname_pat );
2674                 ptr = acl_safe_strcopy( ptr, "\"" );
2675         }
2676
2677         if ( !BER_BVISEMPTY( &b->a_domain_pat ) ) {
2678                 ptr = acl_safe_strcopy( ptr, " domain" );
2679                 ptr = acl_safe_strcopy( ptr, "." );
2680                 ptr = acl_safe_strcopy( ptr, style_strings[b->a_domain_style] );
2681                 if ( b->a_domain_expand ) {
2682                         ptr = acl_safe_strcopy( ptr, ",expand" );
2683                 }
2684                 ptr = acl_safe_strcopy( ptr, "=" );
2685                 ptr = acl_safe_strbvcopy( ptr, &b->a_domain_pat );
2686         }
2687
2688         if ( !BER_BVISEMPTY( &b->a_sockurl_pat ) ) {
2689                 ptr = acl_safe_strcopy( ptr, " sockurl" );
2690                 ptr = acl_safe_strcopy( ptr, "." );
2691                 ptr = acl_safe_strcopy( ptr, style_strings[b->a_sockurl_style] );
2692                 ptr = acl_safe_strcopy( ptr, "=\"" );
2693                 ptr = acl_safe_strbvcopy( ptr, &b->a_sockurl_pat );
2694                 ptr = acl_safe_strcopy( ptr, "\"" );
2695         }
2696
2697         if ( !BER_BVISEMPTY( &b->a_set_pat ) ) {
2698                 ptr = acl_safe_strcopy( ptr, " set" );
2699                 ptr = acl_safe_strcopy( ptr, "." );
2700                 ptr = acl_safe_strcopy( ptr, style_strings[b->a_set_style] );
2701                 ptr = acl_safe_strcopy( ptr, "=\"" );
2702                 ptr = acl_safe_strbvcopy( ptr, &b->a_set_pat );
2703                 ptr = acl_safe_strcopy( ptr, "\"" );
2704         }
2705
2706 #ifdef SLAP_DYNACL
2707         if ( b->a_dynacl ) {
2708                 slap_dynacl_t   *da;
2709
2710                 for ( da = b->a_dynacl; da; da = da->da_next ) {
2711                         if ( da->da_unparse ) {
2712                                 struct berval bv = BER_BVNULL;
2713                                 (void)( *da->da_unparse )( da->da_private, &bv );
2714                                 assert( !BER_BVISNULL( &bv ) );
2715                                 ptr = acl_safe_strbvcopy( ptr, &bv );
2716                                 ch_free( bv.bv_val );
2717                         }
2718                 }
2719         }
2720 #endif /* SLAP_DYNACL */
2721
2722         /* Security Strength Factors */
2723         if ( b->a_authz.sai_ssf ) {
2724                 char buf[SLAP_TEXT_BUFLEN];
2725                 int n = snprintf( buf, sizeof(buf), " ssf=%u",
2726                         b->a_authz.sai_ssf );
2727                 ptr = acl_safe_strncopy( ptr, buf, n );
2728         }
2729         if ( b->a_authz.sai_transport_ssf ) {
2730                 char buf[SLAP_TEXT_BUFLEN];
2731                 int n = snprintf( buf, sizeof(buf), " transport_ssf=%u",
2732                         b->a_authz.sai_transport_ssf );
2733                 ptr = acl_safe_strncopy( ptr, buf, n );
2734         }
2735         if ( b->a_authz.sai_tls_ssf ) {
2736                 char buf[SLAP_TEXT_BUFLEN];
2737                 int n = snprintf( buf, sizeof(buf), " tls_ssf=%u",
2738                         b->a_authz.sai_tls_ssf );
2739                 ptr = acl_safe_strncopy( ptr, buf, n );
2740         }
2741         if ( b->a_authz.sai_sasl_ssf ) {
2742                 char buf[SLAP_TEXT_BUFLEN];
2743                 int n = snprintf( buf, sizeof(buf), " sasl_ssf=%u",
2744                         b->a_authz.sai_sasl_ssf );
2745                 ptr = acl_safe_strncopy( ptr, buf, n );
2746         }
2747
2748         ptr = acl_safe_strcopy( ptr, " " );
2749         if ( b->a_dn_self ) {
2750                 ptr = acl_safe_strcopy( ptr, "self" );
2751         } else if ( b->a_realdn_self ) {
2752                 ptr = acl_safe_strcopy( ptr, "realself" );
2753         }
2754         ptr = acl_safe_strcopy( ptr, accessmask2str( b->a_access_mask, maskbuf, 0 ));
2755         if ( !maskbuf[0] ) ptr--;
2756
2757         if( b->a_type == ACL_BREAK ) {
2758                 ptr = acl_safe_strcopy( ptr, " break" );
2759
2760         } else if( b->a_type == ACL_CONTINUE ) {
2761                 ptr = acl_safe_strcopy( ptr, " continue" );
2762
2763         } else if( b->a_type != ACL_STOP ) {
2764                 ptr = acl_safe_strcopy( ptr, " unknown-control" );
2765         } else {
2766                 if ( !maskbuf[0] ) ptr = acl_safe_strcopy( ptr, " stop" );
2767         }
2768         ptr = acl_safe_strcopy( ptr, "\n" );
2769
2770         return ptr;
2771 }
2772
2773 void
2774 acl_unparse( AccessControl *a, struct berval *bv )
2775 {
2776         Access  *b;
2777         char    *ptr;
2778         int     to = 0;
2779
2780         if ( BER_BVISNULL( &aclbuf ) ) {
2781                 aclbuf.bv_val = ch_malloc( ACLBUF_CHUNKSIZE );
2782                 aclbuf.bv_len = ACLBUF_CHUNKSIZE;
2783         }
2784
2785         bv->bv_len = 0;
2786
2787         ptr = aclbuf.bv_val;
2788
2789         ptr = acl_safe_strcopy( ptr, "to" );
2790         if ( !BER_BVISNULL( &a->acl_dn_pat ) ) {
2791                 to++;
2792                 ptr = acl_safe_strcopy( ptr, " dn." );
2793                 if ( a->acl_dn_style == ACL_STYLE_BASE )
2794                         ptr = acl_safe_strcopy( ptr, style_base );
2795                 else
2796                         ptr = acl_safe_strcopy( ptr, style_strings[a->acl_dn_style] );
2797                 ptr = acl_safe_strcopy( ptr, "=\"" );
2798                 ptr = acl_safe_strbvcopy( ptr, &a->acl_dn_pat );
2799                 ptr = acl_safe_strcopy( ptr, "\"\n" );
2800         }
2801
2802         if ( a->acl_filter != NULL ) {
2803                 struct berval   fbv = BER_BVNULL;
2804
2805                 to++;
2806                 filter2bv( a->acl_filter, &fbv );
2807                 ptr = acl_safe_strcopy( ptr, " filter=\"" );
2808                 ptr = acl_safe_strbvcopy( ptr, &fbv );
2809                 ptr = acl_safe_strcopy( ptr, "\"\n" );
2810                 ch_free( fbv.bv_val );
2811         }
2812
2813         if ( a->acl_attrs != NULL ) {
2814                 int     first = 1;
2815                 AttributeName *an;
2816                 to++;
2817
2818                 ptr = acl_safe_strcopy( ptr, " attrs=" );
2819                 for ( an = a->acl_attrs; an && !BER_BVISNULL( &an->an_name ); an++ ) {
2820                         if ( ! first ) ptr = acl_safe_strcopy( ptr, ",");
2821                         if (an->an_oc) {
2822                                 ptr = acl_safe_strcopy( ptr, ( an->an_flags & SLAP_AN_OCEXCLUDE ) ? "!" : "@" );
2823                                 ptr = acl_safe_strbvcopy( ptr, &an->an_oc->soc_cname );
2824
2825                         } else {
2826                                 ptr = acl_safe_strbvcopy( ptr, &an->an_name );
2827                         }
2828                         first = 0;
2829                 }
2830                 ptr = acl_safe_strcopy( ptr, "\n" );
2831         }
2832
2833         if ( !BER_BVISNULL( &a->acl_attrval ) ) {
2834                 to++;
2835                 ptr = acl_safe_strcopy( ptr, " val." );
2836                 if ( a->acl_attrval_style == ACL_STYLE_BASE &&
2837                         a->acl_attrs[0].an_desc->ad_type->sat_syntax ==
2838                                 slap_schema.si_syn_distinguishedName )
2839                         ptr = acl_safe_strcopy( ptr, style_base );
2840                 else
2841                         ptr = acl_safe_strcopy( ptr, style_strings[a->acl_attrval_style] );
2842                 ptr = acl_safe_strcopy( ptr, "=\"" );
2843                 ptr = acl_safe_strbvcopy( ptr, &a->acl_attrval );
2844                 ptr = acl_safe_strcopy( ptr, "\"\n" );
2845         }
2846
2847         if ( !to ) {
2848                 ptr = acl_safe_strcopy( ptr, " *\n" );
2849         }
2850
2851         for ( b = a->acl_access; b != NULL; b = b->a_next ) {
2852                 ptr = access2text( b, ptr );
2853         }
2854         *ptr = '\0';
2855         bv->bv_val = aclbuf.bv_val;
2856         bv->bv_len = ptr - bv->bv_val;
2857 }
2858
2859 #ifdef LDAP_DEBUG
2860 static void
2861 print_acl( Backend *be, AccessControl *a )
2862 {
2863         struct berval bv;
2864
2865         acl_unparse( a, &bv );
2866         fprintf( stderr, "%s ACL: access %s\n",
2867                 be == NULL ? "Global" : "Backend", bv.bv_val );
2868 }
2869 #endif /* LDAP_DEBUG */