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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 1998-2005 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* 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 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         "path",
  56         NULL
  57 };
  58
  59 static void             split(char *line, int splitchar, char **left, char **right);
  60 static void             access_append(Access **l, Access *a);
  61 static int              acl_usage(void);
  62
  63 static void             acl_regex_normalized_dn(const char *src, struct berval *pat);
  64
  65 #ifdef LDAP_DEBUG
  66 static void             print_acl(Backend *be, AccessControl *a);
  67 #endif
  68
  69 static int              check_scope( BackendDB *be, AccessControl *a );
  70
  71 #ifdef SLAP_DYNACL
  72 static int
  73 slap_dynacl_config(
  74         const char *fname,
  75         int lineno,
  76         Access *b,
  77         const char *name,
  78         const char *opts,
  79         slap_style_t sty,
  80         const char *right )
  81 {
  82         slap_dynacl_t   *da, *tmp;
  83         int             rc = 0;
  84
  85         for ( da = b->a_dynacl; da; da = da->da_next ) {
  86                 if ( strcasecmp( da->da_name, name ) == 0 ) {
  87                         Debug( LDAP_DEBUG_ANY,
  88                                 "%s: line %d: dynacl \"%s\" already specified.\n",
  89                                 fname, lineno, name );
  90                         return acl_usage();
  91                 }
  92         }
  93
  94         da = slap_dynacl_get( name );
  95         if ( da == NULL ) {
  96                 return -1;
  97         }
  98
  99         tmp = ch_malloc( sizeof( slap_dynacl_t ) );
 100         *tmp = *da;
 101
 102         if ( tmp->da_parse ) {
 103                 rc = ( *tmp->da_parse )( fname, lineno, opts, sty, right, &tmp->da_private );
 104                 if ( rc ) {
 105                         ch_free( tmp );
 106                         return rc;
 107                 }
 108         }
 109
 110         tmp->da_next = b->a_dynacl;
 111         b->a_dynacl = tmp;
 112
 113         return 0;
 114 }
 115 #endif /* SLAP_DYNACL */
 116
 117 static void
 118 regtest(const char *fname, int lineno, char *pat) {
 119         int e;
 120         regex_t re;
 121
 122         char            buf[ SLAP_TEXT_BUFLEN ];
 123         unsigned        size;
 124
 125         char *sp;
 126         char *dp;
 127         int  flag;
 128
 129         sp = pat;
 130         dp = buf;
 131         size = 0;
 132         buf[0] = '\0';
 133
 134         for (size = 0, flag = 0; (size < sizeof(buf)) && *sp; sp++) {
 135                 if (flag) {
 136                         if (*sp == '$'|| (*sp >= '0' && *sp <= '9')) {
 137                                 *dp++ = *sp;
 138                                 size++;
 139                         }
 140                         flag = 0;
 141
 142                 } else {
 143                         if (*sp == '$') {
 144                                 flag = 1;
 145                         } else {
 146                                 *dp++ = *sp;
 147                                 size++;
 148                         }
 149                 }
 150         }
 151
 152         *dp = '\0';
 153         if ( size >= (sizeof(buf) - 1) ) {
 154                 Debug( LDAP_DEBUG_ANY,
 155                         "%s: line %d: regular expression \"%s\" too large\n",
 156                         fname, lineno, pat );
 157                 (void)acl_usage();
 158                 exit( EXIT_FAILURE );
 159         }
 160
 161         if ((e = regcomp(&re, buf, REG_EXTENDED|REG_ICASE))) {
 162                 char error[ SLAP_TEXT_BUFLEN ];
 163
 164                 regerror(e, &re, error, sizeof(error));
 165
 166                 snprintf( buf, sizeof( buf ),
 167                         "regular expression \"%s\" bad because of %s",
 168                         pat, error );
 169                 Debug( LDAP_DEBUG_ANY,
 170                         "%s: line %d: %s\n",
 171                         fname, lineno, buf );
 172                 acl_usage();
 173                 exit( EXIT_FAILURE );
 174         }
 175         regfree(&re);
 176 }
 177
 178 /*
 179  * Experimental
 180  *
 181  * Check if the pattern of an ACL, if any, matches the scope
 182  * of the backend it is defined within.
 183  */
 184 #define ACL_SCOPE_UNKNOWN       (-2)
 185 #define ACL_SCOPE_ERR           (-1)
 186 #define ACL_SCOPE_OK            (0)
 187 #define ACL_SCOPE_PARTIAL       (1)
 188 #define ACL_SCOPE_WARN          (2)
 189
 190 static int
 191 check_scope( BackendDB *be, AccessControl *a )
 192 {
 193         ber_len_t       patlen;
 194         struct berval   dn;
 195
 196         dn = be->be_nsuffix[0];
 197
 198         if ( BER_BVISEMPTY( &dn ) ) {
 199                 return ACL_SCOPE_OK;
 200         }
 201
 202         if ( !BER_BVISEMPTY( &a->acl_dn_pat ) ||
 203                         a->acl_dn_style != ACL_STYLE_REGEX )
 204         {
 205                 slap_style_t    style = a->acl_dn_style;
 206
 207                 if ( style == ACL_STYLE_REGEX ) {
 208                         char            dnbuf[SLAP_LDAPDN_MAXLEN + 2];
 209                         char            rebuf[SLAP_LDAPDN_MAXLEN + 1];
 210                         ber_len_t       rebuflen;
 211                         regex_t         re;
 212                         int             rc;
 213
 214                         /* add trailing '$' to database suffix to form
 215                          * a simple trial regex pattern "<suffix>$" */
 216                         AC_MEMCPY( dnbuf, be->be_nsuffix[0].bv_val,
 217                                 be->be_nsuffix[0].bv_len );
 218                         dnbuf[be->be_nsuffix[0].bv_len] = '$';
 219                         dnbuf[be->be_nsuffix[0].bv_len + 1] = '\0';
 220
 221                         if ( regcomp( &re, dnbuf, REG_EXTENDED|REG_ICASE ) ) {
 222                                 return ACL_SCOPE_WARN;
 223                         }
 224
 225                         /* remove trailing ')$', if any, from original
 226                          * regex pattern */
 227                         rebuflen = a->acl_dn_pat.bv_len;
 228                         AC_MEMCPY( rebuf, a->acl_dn_pat.bv_val, rebuflen + 1 );
 229                         if ( rebuf[rebuflen - 1] == '$' ) {
 230                                 rebuf[--rebuflen] = '\0';
 231                         }
 232                         while ( rebuflen > be->be_nsuffix[0].bv_len && rebuf[rebuflen - 1] == ')' ) {
 233                                 rebuf[--rebuflen] = '\0';
 234                         }
 235                         if ( rebuflen == be->be_nsuffix[0].bv_len ) {
 236                                 rc = ACL_SCOPE_WARN;
 237                                 goto regex_done;
 238                         }
 239
 240                         /* not a clear indication of scoping error, though */
 241                         rc = regexec( &re, rebuf, 0, NULL, 0 )
 242                                 ? ACL_SCOPE_WARN : ACL_SCOPE_OK;
 243
 244 regex_done:;
 245                         regfree( &re );
 246                         return rc;
 247                 }
 248
 249                 patlen = a->acl_dn_pat.bv_len;
 250                 /* If backend suffix is longer than pattern,
 251                  * it is a potential mismatch (in the sense
 252                  * that a superior naming context could
 253                  * match */
 254                 if ( dn.bv_len > patlen ) {
 255                         /* base is blatantly wrong */
 256                         if ( style == ACL_STYLE_BASE ) return ACL_SCOPE_ERR;
 257
 258                         /* a style of one can be wrong if there is
 259                          * more than one level between the suffix
 260                          * and the pattern */
 261                         if ( style == ACL_STYLE_ONE ) {
 262                                 ber_len_t       rdnlen = 0;
 263                                 int             sep = 0;
 264
 265                                 if ( patlen > 0 ) {
 266                                         if ( !DN_SEPARATOR( dn.bv_val[dn.bv_len - patlen - 1] )) {
 267                                                 return ACL_SCOPE_ERR;
 268                                         }
 269                                         sep = 1;
 270                                 }
 271
 272                                 rdnlen = dn_rdnlen( NULL, &dn );
 273                                 if ( rdnlen != dn.bv_len - patlen - sep )
 274                                         return ACL_SCOPE_ERR;
 275                         }
 276
 277                         /* if the trailing part doesn't match,
 278                          * then it's an error */
 279                         if ( strcmp( a->acl_dn_pat.bv_val,
 280                                 &dn.bv_val[dn.bv_len - patlen] ) != 0 )
 281                         {
 282                                 return ACL_SCOPE_ERR;
 283                         }
 284
 285                         return ACL_SCOPE_PARTIAL;
 286                 }
 287
 288                 switch ( style ) {
 289                 case ACL_STYLE_BASE:
 290                 case ACL_STYLE_ONE:
 291                 case ACL_STYLE_CHILDREN:
 292                 case ACL_STYLE_SUBTREE:
 293                         break;
 294
 295                 default:
 296                         assert( 0 );
 297                         break;
 298                 }
 299
 300                 if ( dn.bv_len < patlen &&
 301                         !DN_SEPARATOR( a->acl_dn_pat.bv_val[patlen - dn.bv_len - 1] ))
 302                 {
 303                         return ACL_SCOPE_ERR;
 304                 }
 305
 306                 if ( strcmp( &a->acl_dn_pat.bv_val[patlen - dn.bv_len], dn.bv_val )
 307                         != 0 )
 308                 {
 309                         return ACL_SCOPE_ERR;
 310                 }
 311
 312                 return ACL_SCOPE_OK;
 313         }
 314
 315         return ACL_SCOPE_UNKNOWN;
 316 }
 317
 318 int
 319 parse_acl(
 320         Backend *be,
 321         const char      *fname,
 322         int             lineno,
 323         int             argc,
 324         char            **argv,
 325         int             pos )
 326 {
 327         int             i;
 328         char            *left, *right, *style;
 329         struct berval   bv;
 330         AccessControl   *a;
 331         Access  *b;
 332         int rc;
 333         const char *text;
 334
 335         a = NULL;
 336         for ( i = 1; i < argc; i++ ) {
 337                 /* to clause - select which entries are protected */
 338                 if ( strcasecmp( argv[i], "to" ) == 0 ) {
 339                         if ( a != NULL ) {
 340                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 341                                         "only one to clause allowed in access line\n",
 342                                     fname, lineno, 0 );
 343                                 return acl_usage();
 344                         }
 345                         a = (AccessControl *) ch_calloc( 1, sizeof(AccessControl) );
 346                         for ( ++i; i < argc; i++ ) {
 347                                 if ( strcasecmp( argv[i], "by" ) == 0 ) {
 348                                         i--;
 349                                         break;
 350                                 }
 351
 352                                 if ( strcasecmp( argv[i], "*" ) == 0 ) {
 353                                         if ( !BER_BVISEMPTY( &a->acl_dn_pat ) ||
 354                                                 a->acl_dn_style != ACL_STYLE_REGEX )
 355                                         {
 356                                                 Debug( LDAP_DEBUG_ANY,
 357                                                         "%s: line %d: dn pattern"
 358                                                         " already specified in to clause.\n",
 359                                                         fname, lineno, 0 );
 360                                                 return acl_usage();
 361                                         }
 362
 363                                         ber_str2bv( "*", STRLENOF( "*" ), 1, &a->acl_dn_pat );
 364                                         continue;
 365                                 }
 366
 367                                 split( argv[i], '=', &left, &right );
 368                                 split( left, '.', &left, &style );
 369
 370                                 if ( right == NULL ) {
 371                                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 372                                                 "missing \"=\" in \"%s\" in to clause\n",
 373                                             fname, lineno, left );
 374                                         return acl_usage();
 375                                 }
 376
 377                                 if ( strcasecmp( left, "dn" ) == 0 ) {
 378                                         if ( !BER_BVISEMPTY( &a->acl_dn_pat ) ||
 379                                                 a->acl_dn_style != ACL_STYLE_REGEX )
 380                                         {
 381                                                 Debug( LDAP_DEBUG_ANY,
 382                                                         "%s: line %d: dn pattern"
 383                                                         " already specified in to clause.\n",
 384                                                         fname, lineno, 0 );
 385                                                 return acl_usage();
 386                                         }
 387
 388                                         if ( style == NULL || *style == '\0' ||
 389                                                 strcasecmp( style, "baseObject" ) == 0 ||
 390                                                 strcasecmp( style, "base" ) == 0 ||
 391                                                 strcasecmp( style, "exact" ) == 0 )
 392                                         {
 393                                                 a->acl_dn_style = ACL_STYLE_BASE;
 394                                                 ber_str2bv( right, 0, 1, &a->acl_dn_pat );
 395
 396                                         } else if ( strcasecmp( style, "oneLevel" ) == 0 ||
 397                                                 strcasecmp( style, "one" ) == 0 )
 398                                         {
 399                                                 a->acl_dn_style = ACL_STYLE_ONE;
 400                                                 ber_str2bv( right, 0, 1, &a->acl_dn_pat );
 401
 402                                         } else if ( strcasecmp( style, "subtree" ) == 0 ||
 403                                                 strcasecmp( style, "sub" ) == 0 )
 404                                         {
 405                                                 if( *right == '\0' ) {
 406                                                         ber_str2bv( "*", STRLENOF( "*" ), 1, &a->acl_dn_pat );
 407
 408                                                 } else {
 409                                                         a->acl_dn_style = ACL_STYLE_SUBTREE;
 410                                                         ber_str2bv( right, 0, 1, &a->acl_dn_pat );
 411                                                 }
 412
 413                                         } else if ( strcasecmp( style, "children" ) == 0 ) {
 414                                                 a->acl_dn_style = ACL_STYLE_CHILDREN;
 415                                                 ber_str2bv( right, 0, 1, &a->acl_dn_pat );
 416
 417                                         } else if ( strcasecmp( style, "regex" ) == 0 ) {
 418                                                 a->acl_dn_style = ACL_STYLE_REGEX;
 419
 420                                                 if ( *right == '\0' ) {
 421                                                         /* empty regex should match empty DN */
 422                                                         a->acl_dn_style = ACL_STYLE_BASE;
 423                                                         ber_str2bv( right, 0, 1, &a->acl_dn_pat );
 424
 425                                                 } else if ( strcmp(right, "*") == 0
 426                                                         || strcmp(right, ".*") == 0
 427                                                         || strcmp(right, ".*$") == 0
 428                                                         || strcmp(right, "^.*") == 0
 429                                                         || strcmp(right, "^.*$") == 0
 430                                                         || strcmp(right, ".*$$") == 0
 431                                                         || strcmp(right, "^.*$$") == 0 )
 432                                                 {
 433                                                         ber_str2bv( "*", STRLENOF("*"), 1, &a->acl_dn_pat );
 434
 435                                                 } else {
 436                                                         acl_regex_normalized_dn( right, &a->acl_dn_pat );
 437                                                 }
 438
 439                                         } else {
 440                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 441                                                         "unknown dn style \"%s\" in to clause\n",
 442                                                     fname, lineno, style );
 443                                                 return acl_usage();
 444                                         }
 445
 446                                         continue;
 447                                 }
 448
 449                                 if ( strcasecmp( left, "filter" ) == 0 ) {
 450                                         if ( (a->acl_filter = str2filter( right )) == NULL ) {
 451                                                 Debug( LDAP_DEBUG_ANY,
 452                                 "%s: line %d: bad filter \"%s\" in to clause\n",
 453                                                     fname, lineno, right );
 454                                                 return acl_usage();
 455                                         }
 456
 457                                 } else if ( strcasecmp( left, "attr" ) == 0             /* TOLERATED */
 458                                                 || strcasecmp( left, "attrs" ) == 0 )   /* DOCUMENTED */
 459                                 {
 460                                         if ( strcasecmp( left, "attr" ) == 0 ) {
 461                                                 Debug( LDAP_DEBUG_ANY,
 462                                                         "%s: line %d: \"attr\" "
 463                                                         "is deprecated (and undocumented); "
 464                                                         "use \"attrs\" instead.\n",
 465                                                         fname, lineno, 0 );
 466                                         }
 467
 468                                         a->acl_attrs = str2anlist( a->acl_attrs,
 469                                                 right, "," );
 470                                         if ( a->acl_attrs == NULL ) {
 471                                                 Debug( LDAP_DEBUG_ANY,
 472                                 "%s: line %d: unknown attr \"%s\" in to clause\n",
 473                                                     fname, lineno, right );
 474                                                 return acl_usage();
 475                                         }
 476
 477                                 } else if ( strncasecmp( left, "val", 3 ) == 0 ) {
 478                                         struct berval   bv;
 479                                         char            *mr;
 480
 481                                         if ( !BER_BVISEMPTY( &a->acl_attrval ) ) {
 482                                                 Debug( LDAP_DEBUG_ANY,
 483                                 "%s: line %d: attr val already specified in to clause.\n",
 484                                                         fname, lineno, 0 );
 485                                                 return acl_usage();
 486                                         }
 487                                         if ( a->acl_attrs == NULL || !BER_BVISEMPTY( &a->acl_attrs[1].an_name ) )
 488                                         {
 489                                                 Debug( LDAP_DEBUG_ANY,
 490                                 "%s: line %d: attr val requires a single attribute.\n",
 491                                                         fname, lineno, 0 );
 492                                                 return acl_usage();
 493                                         }
 494
 495                                         ber_str2bv( right, 0, 0, &bv );
 496                                         a->acl_attrval_style = ACL_STYLE_BASE;
 497
 498                                         mr = strchr( left, '/' );
 499                                         if ( mr != NULL ) {
 500                                                 mr[ 0 ] = '\0';
 501                                                 mr++;
 502
 503                                                 a->acl_attrval_mr = mr_find( mr );
 504                                                 if ( a->acl_attrval_mr == NULL ) {
 505                                                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 506                                                                 "invalid matching rule \"%s\".\n",
 507                                                                 fname, lineno, mr );
 508                                                         return acl_usage();
 509                                                 }
 510
 511                                                 if( !mr_usable_with_at( a->acl_attrval_mr, a->acl_attrs[ 0 ].an_desc->ad_type ) )
 512                                                 {
 513                                                         char    buf[ SLAP_TEXT_BUFLEN ];
 514
 515                                                         snprintf( buf, sizeof( buf ),
 516                                                                 "matching rule \"%s\" use "
 517                                                                 "with attr \"%s\" not appropriate.",
 518                                                                 mr, a->acl_attrs[ 0 ].an_name.bv_val );
 519
 520
 521                                                         Debug( LDAP_DEBUG_ANY, "%s: line %d: %s\n",
 522                                                                 fname, lineno, buf );
 523                                                         return acl_usage();
 524                                                 }
 525                                         }
 526
 527                                         if ( style != NULL ) {
 528                                                 if ( strcasecmp( style, "regex" ) == 0 ) {
 529                                                         int e = regcomp( &a->acl_attrval_re, bv.bv_val,
 530                                                                 REG_EXTENDED | REG_ICASE | REG_NOSUB );
 531                                                         if ( e ) {
 532                                                                 char    err[SLAP_TEXT_BUFLEN],
 533                                                                         buf[ SLAP_TEXT_BUFLEN ];
 534
 535                                                                 regerror( e, &a->acl_attrval_re, err, sizeof( err ) );
 536
 537                                                                 snprintf( buf, sizeof( buf ),
 538                                                                         "regular expression \"%s\" bad because of %s",
 539                                                                         right, err );
 540
 541                                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: %s\n",
 542                                                                         fname, lineno, buf );
 543                                                                 return acl_usage();
 544                                                         }
 545                                                         a->acl_attrval_style = ACL_STYLE_REGEX;
 546
 547                                                 } else {
 548                                                         /* FIXME: if the attribute has DN syntax, we might
 549                                                          * allow one, subtree and children styles as well */
 550                                                         if ( !strcasecmp( style, "base" ) ||
 551                                                                 !strcasecmp( style, "exact" ) ) {
 552                                                                 a->acl_attrval_style = ACL_STYLE_BASE;
 553
 554                                                         } else if ( a->acl_attrs[0].an_desc->ad_type->
 555                                                                 sat_syntax == slap_schema.si_syn_distinguishedName )
 556                                                         {
 557                                                                 if ( !strcasecmp( style, "baseObject" ) ||
 558                                                                         !strcasecmp( style, "base" ) )
 559                                                                 {
 560                                                                         a->acl_attrval_style = ACL_STYLE_BASE;
 561                                                                 } else if ( !strcasecmp( style, "onelevel" ) ||
 562                                                                         !strcasecmp( style, "one" ) )
 563                                                                 {
 564                                                                         a->acl_attrval_style = ACL_STYLE_ONE;
 565                                                                 } else if ( !strcasecmp( style, "subtree" ) ||
 566                                                                         !strcasecmp( style, "sub" ) )
 567                                                                 {
 568                                                                         a->acl_attrval_style = ACL_STYLE_SUBTREE;
 569                                                                 } else if ( !strcasecmp( style, "children" ) ) {
 570                                                                         a->acl_attrval_style = ACL_STYLE_CHILDREN;
 571                                                                 } else {
 572                                                                         char    buf[ SLAP_TEXT_BUFLEN ];
 573
 574                                                                         /* FIXME: should be an error */
 575
 576                                                                         snprintf( buf, sizeof( buf ),
 577                                                                                 "unknown val.<style> \"%s\" "
 578                                                                                 "for attributeType \"%s\" with DN syntax"
 579 #ifndef SLAPD_CONF_UNKNOWN_BAILOUT
 580                                                                                 "; using \"base\""
 581 #endif /* ! SLAPD_CONF_UNKNOWN_BAILOUT */
 582                                                                                 SLAPD_CONF_UNKNOWN_IGNORED ".",
 583                                                                                 style,
 584                                                                                 a->acl_attrs[0].an_desc->ad_cname.bv_val );
 585
 586                                                                         Debug( LDAP_DEBUG_CONFIG | LDAP_DEBUG_ACL,
 587                                                                                 "%s: line %d: %s\n",
 588                                                                                 fname, lineno, buf );
 589 #ifdef SLAPD_CONF_UNKNOWN_BAILOUT
 590                                                                         return acl_usage();
 591 #endif /* SLAPD_CONF_UNKNOWN_BAILOUT */
 592                                                                         a->acl_attrval_style = ACL_STYLE_BASE;
 593                                                                 }
 594
 595                                                                 rc = dnNormalize( 0, NULL, NULL, &bv, &a->acl_attrval, NULL );
 596                                                                 if ( rc != LDAP_SUCCESS ) {
 597                                                                         char    buf[ SLAP_TEXT_BUFLEN ];
 598
 599                                                                         snprintf( buf, sizeof( buf ),
 600                                                                                 "unable to normalize DN \"%s\" "
 601                                                                                 "for attributeType \"%s\" (%d).",
 602                                                                                 bv.bv_val,
 603                                                                                 a->acl_attrs[0].an_desc->ad_cname.bv_val,
 604                                                                                 rc );
 605                                                                         Debug( LDAP_DEBUG_ANY,
 606                                                                                 "%s: line %d: %s\n",
 607                                                                                 fname, lineno, buf );
 608                                                                         return acl_usage();
 609                                                                 }
 610
 611                                                         } else {
 612                                                                 char    buf[ SLAP_TEXT_BUFLEN ];
 613
 614                                                                 /* FIXME: should be an error */
 615
 616                                                                 snprintf( buf, sizeof( buf ),
 617                                                                         "unknown val.<style> \"%s\" "
 618                                                                         "for attributeType \"%s\""
 619 #ifndef SLAPD_CONF_UNKNOWN_BAILOUT
 620                                                                         "; using \"exact\""
 621 #endif /* ! SLAPD_CONF_UNKNOWN_BAILOUT */
 622                                                                         SLAPD_CONF_UNKNOWN_IGNORED ".",
 623                                                                         style, a->acl_attrs[0].an_desc->ad_cname.bv_val );
 624                                                                 Debug( LDAP_DEBUG_CONFIG | LDAP_DEBUG_ACL,
 625                                                                         "%s: line %d: %s\n",
 626                                                                         fname, lineno, buf );
 627 #ifdef SLAPD_CONF_UNKNOWN_BAILOUT
 628                                                                 return acl_usage();
 629 #endif /* SLAPD_CONF_UNKNOWN_BAILOUT */
 630                                                                 a->acl_attrval_style = ACL_STYLE_BASE;
 631                                                         }
 632                                                 }
 633                                         }
 634
 635                                         /* Check for appropriate matching rule */
 636                                         if ( a->acl_attrval_style == ACL_STYLE_REGEX ) {
 637                                                 ber_dupbv( &a->acl_attrval, &bv );
 638
 639                                         } else if ( BER_BVISNULL( &a->acl_attrval ) ) {
 640                                                 int             rc;
 641                                                 const char      *text;
 642
 643                                                 if ( a->acl_attrval_mr == NULL ) {
 644                                                         a->acl_attrval_mr = a->acl_attrs[ 0 ].an_desc->ad_type->sat_equality;
 645                                                 }
 646
 647                                                 if ( a->acl_attrval_mr == NULL ) {
 648                                                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 649                                                                 "attr \"%s\" does not have an EQUALITY matching rule.\n",
 650                                                                 fname, lineno, a->acl_attrs[ 0 ].an_name.bv_val );
 651                                                         return acl_usage();
 652                                                 }
 653
 654                                                 rc = asserted_value_validate_normalize(
 655                                                         a->acl_attrs[ 0 ].an_desc,
 656                                                         a->acl_attrval_mr,
 657                                                         SLAP_MR_EQUALITY|SLAP_MR_VALUE_OF_ASSERTION_SYNTAX,
 658                                                         &bv,
 659                                                         &a->acl_attrval,
 660                                                         &text,
 661                                                         NULL );
 662                                                 if ( rc != LDAP_SUCCESS ) {
 663                                                         char    buf[ SLAP_TEXT_BUFLEN ];
 664
 665                                                         snprintf( buf, sizeof( buf ), "%s: line %d: "
 666                                                                 " attr \"%s\" normalization failed (%d: %s)",
 667                                                                 a->acl_attrs[ 0 ].an_name.bv_val, rc, text );
 668                                                         Debug( LDAP_DEBUG_ANY, "%s: line %d: %s.\n",
 669                                                                 fname, lineno, buf );
 670                                                         return acl_usage();
 671                                                 }
 672                                         }
 673
 674                                 } else {
 675                                         Debug( LDAP_DEBUG_ANY,
 676                                                 "%s: line %d: expecting <what> got \"%s\"\n",
 677                                             fname, lineno, left );
 678                                         return acl_usage();
 679                                 }
 680                         }
 681
 682                         if ( !BER_BVISNULL( &a->acl_dn_pat ) &&
 683                                         ber_bvccmp( &a->acl_dn_pat, '*' ) )
 684                         {
 685                                 free( a->acl_dn_pat.bv_val );
 686                                 BER_BVZERO( &a->acl_dn_pat );
 687                                 a->acl_dn_style = ACL_STYLE_REGEX;
 688                         }
 689
 690                         if ( !BER_BVISEMPTY( &a->acl_dn_pat ) ||
 691                                         a->acl_dn_style != ACL_STYLE_REGEX )
 692                         {
 693                                 if ( a->acl_dn_style != ACL_STYLE_REGEX ) {
 694                                         struct berval bv;
 695                                         rc = dnNormalize( 0, NULL, NULL, &a->acl_dn_pat, &bv, NULL);
 696                                         if ( rc != LDAP_SUCCESS ) {
 697                                                 Debug( LDAP_DEBUG_ANY,
 698                                                         "%s: line %d: bad DN \"%s\" in to DN clause\n",
 699                                                         fname, lineno, a->acl_dn_pat.bv_val );
 700                                                 return acl_usage();
 701                                         }
 702                                         free( a->acl_dn_pat.bv_val );
 703                                         a->acl_dn_pat = bv;
 704
 705                                 } else {
 706                                         int e = regcomp( &a->acl_dn_re, a->acl_dn_pat.bv_val,
 707                                                 REG_EXTENDED | REG_ICASE );
 708                                         if ( e ) {
 709                                                 char    err[ SLAP_TEXT_BUFLEN ],
 710                                                         buf[ SLAP_TEXT_BUFLEN ];
 711
 712                                                 regerror( e, &a->acl_dn_re, err, sizeof( err ) );
 713                                                 snprintf( buf, sizeof( buf ),
 714                                                         "regular expression \"%s\" bad because of %s",
 715                                                         right, err );
 716                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: %s\n",
 717                                                         fname, lineno, buf );
 718                                                 return acl_usage();
 719                                         }
 720                                 }
 721                         }
 722
 723                 /* by clause - select who has what access to entries */
 724                 } else if ( strcasecmp( argv[i], "by" ) == 0 ) {
 725                         if ( a == NULL ) {
 726                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 727                                         "to clause required before by clause in access line\n",
 728                                         fname, lineno, 0 );
 729                                 return acl_usage();
 730                         }
 731
 732                         /*
 733                          * by clause consists of <who> and <access>
 734                          */
 735
 736                         b = (Access *) ch_calloc( 1, sizeof(Access) );
 737
 738                         ACL_INVALIDATE( b->a_access_mask );
 739
 740                         if ( ++i == argc ) {
 741                                 Debug( LDAP_DEBUG_ANY,
 742                                         "%s: line %d: premature EOL: expecting <who>\n",
 743                                         fname, lineno, 0 );
 744                                 return acl_usage();
 745                         }
 746
 747                         /* get <who> */
 748                         for ( ; i < argc; i++ ) {
 749                                 slap_style_t    sty = ACL_STYLE_REGEX;
 750                                 char            *style_modifier = NULL;
 751                                 char            *style_level = NULL;
 752                                 int             level = 0;
 753                                 int             expand = 0;
 754                                 slap_dn_access  *bdn = &b->a_dn;
 755                                 int             is_realdn = 0;
 756
 757                                 split( argv[i], '=', &left, &right );
 758                                 split( left, '.', &left, &style );
 759                                 if ( style ) {
 760                                         split( style, ',', &style, &style_modifier );
 761
 762                                         if ( strncasecmp( style, "level", STRLENOF( "level" ) ) == 0 ) {
 763                                                 split( style, '{', &style, &style_level );
 764                                                 if ( style_level != NULL ) {
 765                                                         char *p = strchr( style_level, '}' );
 766                                                         if ( p == NULL ) {
 767                                                                 Debug( LDAP_DEBUG_ANY,
 768                                                                         "%s: line %d: premature eol: "
 769                                                                         "expecting closing '}' in \"level{n}\"\n",
 770                                                                         fname, lineno, 0 );
 771                                                                 return acl_usage();
 772                                                         } else if ( p == style_level ) {
 773                                                                 Debug( LDAP_DEBUG_ANY,
 774                                                                         "%s: line %d: empty level "
 775                                                                         "in \"level{n}\"\n",
 776                                                                         fname, lineno, 0 );
 777                                                                 return acl_usage();
 778                                                         }
 779                                                         p[0] = '\0';
 780                                                 }
 781                                         }
 782                                 }
 783
 784                                 if ( style == NULL || *style == '\0' ||
 785                                         strcasecmp( style, "exact" ) == 0 ||
 786                                         strcasecmp( style, "baseObject" ) == 0 ||
 787                                         strcasecmp( style, "base" ) == 0 )
 788                                 {
 789                                         sty = ACL_STYLE_BASE;
 790
 791                                 } else if ( strcasecmp( style, "onelevel" ) == 0 ||
 792                                         strcasecmp( style, "one" ) == 0 )
 793                                 {
 794                                         sty = ACL_STYLE_ONE;
 795
 796                                 } else if ( strcasecmp( style, "subtree" ) == 0 ||
 797                                         strcasecmp( style, "sub" ) == 0 )
 798                                 {
 799                                         sty = ACL_STYLE_SUBTREE;
 800
 801                                 } else if ( strcasecmp( style, "children" ) == 0 ) {
 802                                         sty = ACL_STYLE_CHILDREN;
 803
 804                                 } else if ( strcasecmp( style, "level" ) == 0 )
 805                                 {
 806                                         if ( lutil_atoi( &level, style_level ) != 0 ) {
 807                                                 Debug( LDAP_DEBUG_ANY,
 808                                                         "%s: line %d: unable to parse level "
 809                                                         "in \"level{n}\"\n",
 810                                                         fname, lineno, 0 );
 811                                                 return acl_usage();
 812                                         }
 813
 814                                         sty = ACL_STYLE_LEVEL;
 815
 816                                 } else if ( strcasecmp( style, "regex" ) == 0 ) {
 817                                         sty = ACL_STYLE_REGEX;
 818
 819                                 } else if ( strcasecmp( style, "expand" ) == 0 ) {
 820                                         sty = ACL_STYLE_EXPAND;
 821
 822                                 } else if ( strcasecmp( style, "ip" ) == 0 ) {
 823                                         sty = ACL_STYLE_IP;
 824
 825                                 } else if ( strcasecmp( style, "path" ) == 0 ) {
 826                                         sty = ACL_STYLE_PATH;
 827 #ifndef LDAP_PF_LOCAL
 828                                         Debug( LDAP_DEBUG_CONFIG | LDAP_DEBUG_ACL,
 829                                                 "%s: line %d: "
 830                                                 "\"path\" style modifier is useless without local"
 831                                                 SLAPD_CONF_UNKNOWN_IGNORED ".\n",
 832                                                 fname, lineno, 0 );
 833 #ifdef SLAPD_CONF_UNKNOWN_BAILOUT
 834                                         return acl_usage();
 835 #endif /* SLAPD_CONF_UNKNOWN_BAILOUT */
 836 #endif /* LDAP_PF_LOCAL */
 837
 838                                 } else {
 839                                         Debug( LDAP_DEBUG_ANY,
 840                                                 "%s: line %d: unknown style \"%s\" in by clause\n",
 841                                                 fname, lineno, style );
 842                                         return acl_usage();
 843                                 }
 844
 845                                 if ( style_modifier &&
 846                                         strcasecmp( style_modifier, "expand" ) == 0 )
 847                                 {
 848                                         switch ( sty ) {
 849                                         case ACL_STYLE_REGEX:
 850                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 851                                                         "\"regex\" style implies "
 852                                                         "\"expand\" modifier"
 853                                                         SLAPD_CONF_UNKNOWN_IGNORED ".\n",
 854                                                         fname, lineno, 0 );
 855 #ifdef SLAPD_CONF_UNKNOWN_BAILOUT
 856                                                 return acl_usage();
 857 #endif /* SLAPD_CONF_UNKNOWN_BAILOUT */
 858                                                 break;
 859
 860                                         case ACL_STYLE_EXPAND:
 861                                                 break;
 862
 863                                         default:
 864                                                 /* we'll see later if it's pertinent */
 865                                                 expand = 1;
 866                                                 break;
 867                                         }
 868                                 }
 869
 870                                 /* expand in <who> needs regex in <what> */
 871                                 if ( ( sty == ACL_STYLE_EXPAND || expand )
 872                                                 && a->acl_dn_style != ACL_STYLE_REGEX )
 873                                 {
 874                                         Debug( LDAP_DEBUG_CONFIG | LDAP_DEBUG_ACL, "%s: line %d: "
 875                                                 "\"expand\" style or modifier used "
 876                                                 "in conjunction with "
 877                                                 "a non-regex <what> clause"
 878                                                 SLAPD_CONF_UNKNOWN_IGNORED ".\n",
 879                                                 fname, lineno, 0 );
 880 #ifdef SLAPD_CONF_UNKNOWN_BAILOUT
 881                                                 return acl_usage();
 882 #endif /* SLAPD_CONF_UNKNOWN_BAILOUT */
 883                                 }
 884
 885                                 if ( strncasecmp( left, "real", STRLENOF( "real" ) ) == 0 ) {
 886                                         is_realdn = 1;
 887                                         bdn = &b->a_realdn;
 888                                         left += STRLENOF( "real" );
 889                                 }
 890
 891                                 if ( strcasecmp( left, "*" ) == 0 ) {
 892                                         if ( is_realdn ) {
 893                                                 return acl_usage();
 894                                         }
 895
 896                                         ber_str2bv( "*", STRLENOF( "*" ), 1, &bv );
 897                                         sty = ACL_STYLE_REGEX;
 898
 899                                 } else if ( strcasecmp( left, "anonymous" ) == 0 ) {
 900                                         ber_str2bv("anonymous", STRLENOF( "anonymous" ), 1, &bv);
 901                                         sty = ACL_STYLE_ANONYMOUS;
 902
 903                                 } else if ( strcasecmp( left, "users" ) == 0 ) {
 904                                         ber_str2bv("users", STRLENOF( "users" ), 1, &bv);
 905                                         sty = ACL_STYLE_USERS;
 906
 907                                 } else if ( strcasecmp( left, "self" ) == 0 ) {
 908                                         ber_str2bv("self", STRLENOF( "self" ), 1, &bv);
 909                                         sty = ACL_STYLE_SELF;
 910
 911                                 } else if ( strcasecmp( left, "dn" ) == 0 ) {
 912                                         if ( sty == ACL_STYLE_REGEX ) {
 913                                                 bdn->a_style = ACL_STYLE_REGEX;
 914                                                 if ( right == NULL ) {
 915                                                         /* no '=' */
 916                                                         ber_str2bv("users",
 917                                                                 STRLENOF( "users" ),
 918                                                                 1, &bv);
 919                                                         bdn->a_style = ACL_STYLE_USERS;
 920
 921                                                 } else if (*right == '\0' ) {
 922                                                         /* dn="" */
 923                                                         ber_str2bv("anonymous",
 924                                                                 STRLENOF( "anonymous" ),
 925                                                                 1, &bv);
 926                                                         bdn->a_style = ACL_STYLE_ANONYMOUS;
 927
 928                                                 } else if ( strcmp( right, "*" ) == 0 ) {
 929                                                         /* dn=* */
 930                                                         /* any or users?  users for now */
 931                                                         ber_str2bv("users",
 932                                                                 STRLENOF( "users" ),
 933                                                                 1, &bv);
 934                                                         bdn->a_style = ACL_STYLE_USERS;
 935
 936                                                 } else if ( strcmp( right, ".+" ) == 0
 937                                                         || strcmp( right, "^.+" ) == 0
 938                                                         || strcmp( right, ".+$" ) == 0
 939                                                         || strcmp( right, "^.+$" ) == 0
 940                                                         || strcmp( right, ".+$$" ) == 0
 941                                                         || strcmp( right, "^.+$$" ) == 0 )
 942                                                 {
 943                                                         ber_str2bv("users",
 944                                                                 STRLENOF( "users" ),
 945                                                                 1, &bv);
 946                                                         bdn->a_style = ACL_STYLE_USERS;
 947
 948                                                 } else if ( strcmp( right, ".*" ) == 0
 949                                                         || strcmp( right, "^.*" ) == 0
 950                                                         || strcmp( right, ".*$" ) == 0
 951                                                         || strcmp( right, "^.*$" ) == 0
 952                                                         || strcmp( right, ".*$$" ) == 0
 953                                                         || strcmp( right, "^.*$$" ) == 0 )
 954                                                 {
 955                                                         ber_str2bv("*",
 956                                                                 STRLENOF( "*" ),
 957                                                                 1, &bv);
 958
 959                                                 } else {
 960                                                         acl_regex_normalized_dn( right, &bv );
 961                                                         if ( !ber_bvccmp( &bv, '*' ) ) {
 962                                                                 regtest( fname, lineno, bv.bv_val );
 963                                                         }
 964                                                 }
 965
 966                                         } else if ( right == NULL || *right == '\0' ) {
 967                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 968                                                         "missing \"=\" in (or value after) \"%s\" "
 969                                                         "in by clause\n",
 970                                                         fname, lineno, left );
 971                                                 return acl_usage();
 972
 973                                         } else {
 974                                                 ber_str2bv( right, 0, 1, &bv );
 975                                         }
 976
 977                                 } else {
 978                                         BER_BVZERO( &bv );
 979                                 }
 980
 981                                 if ( !BER_BVISNULL( &bv ) ) {
 982                                         if ( !BER_BVISEMPTY( &bdn->a_pat ) ) {
 983                                                 Debug( LDAP_DEBUG_ANY,
 984                                                         "%s: line %d: dn pattern already specified.\n",
 985                                                         fname, lineno, 0 );
 986                                                 return acl_usage();
 987                                         }
 988
 989                                         if ( sty != ACL_STYLE_REGEX &&
 990                                                         sty != ACL_STYLE_ANONYMOUS &&
 991                                                         sty != ACL_STYLE_USERS &&
 992                                                         sty != ACL_STYLE_SELF &&
 993                                                         expand == 0 )
 994                                         {
 995                                                 rc = dnNormalize(0, NULL, NULL,
 996                                                         &bv, &bdn->a_pat, NULL);
 997                                                 if ( rc != LDAP_SUCCESS ) {
 998                                                         Debug( LDAP_DEBUG_ANY,
 999                                                                 "%s: line %d: bad DN \"%s\" in by DN clause\n",
1000                                                                 fname, lineno, bv.bv_val );
1001                                                         return acl_usage();
1002                                                 }
1003                                                 free( bv.bv_val );
1004                                                 if ( sty == ACL_STYLE_BASE
1005                                                         && be != NULL
1006                                                         && !BER_BVISNULL( &be->be_rootndn )
1007                                                         && dn_match( &bdn->a_pat, &be->be_rootndn ) )
1008                                                 {
1009                                                         Debug( LDAP_DEBUG_ANY,
1010                                                                 "%s: line %d: rootdn is always granted "
1011                                                                 "unlimited privileges.\n",
1012                                                                 fname, lineno, 0 );
1013                                                 }
1014
1015                                         } else {
1016                                                 bdn->a_pat = bv;
1017                                         }
1018                                         bdn->a_style = sty;
1019                                         if ( expand ) {
1020                                                 char    *exp;
1021                                                 int     gotit = 0;
1022
1023                                                 for ( exp = strchr( bdn->a_pat.bv_val, '$' );
1024                                                                 exp && (ber_len_t)(exp - bdn->a_pat.bv_val)
1025                                                                         < bdn->a_pat.bv_len;
1026                                                                 exp = strchr( exp, '$' ) )
1027                                                 {
1028                                                         if ( isdigit( exp[ 1 ] ) ) {
1029                                                                 gotit = 1;
1030                                                                 break;
1031                                                         }
1032                                                 }
1033
1034                                                 if ( gotit == 1 ) {
1035                                                         bdn->a_expand = expand;
1036
1037                                                 } else {
1038                                                         Debug( LDAP_DEBUG_ANY,
1039                                                                 "%s: line %d: \"expand\" used "
1040                                                                 "with no expansions in \"pattern\""
1041                                                                 SLAPD_CONF_UNKNOWN_IGNORED ".\n",
1042                                                                 fname, lineno, 0 );
1043 #ifdef SLAPD_CONF_UNKNOWN_BAILOUT
1044                                                         return acl_usage();
1045 #endif /* SLAPD_CONF_UNKNOWN_BAILOUT */
1046                                                 }
1047                                         }
1048                                         if ( sty == ACL_STYLE_SELF ) {
1049                                                 bdn->a_self_level = level;
1050
1051                                         } else {
1052                                                 if ( level < 0 ) {
1053                                                         Debug( LDAP_DEBUG_ANY,
1054                                                                 "%s: line %d: bad negative level \"%d\" "
1055                                                                 "in by DN clause\n",
1056                                                                 fname, lineno, level );
1057                                                         return acl_usage();
1058                                                 } else if ( level == 1 ) {
1059                                                         Debug( LDAP_DEBUG_ANY,
1060                                                                 "%s: line %d: \"onelevel\" should be used "
1061                                                                 "instead of \"level{1}\" in by DN clause\n",
1062                                                                 fname, lineno, 0 );
1063                                                 } else if ( level == 0 && sty == ACL_STYLE_LEVEL ) {
1064                                                         Debug( LDAP_DEBUG_ANY,
1065                                                                 "%s: line %d: \"base\" should be used "
1066                                                                 "instead of \"level{0}\" in by DN clause\n",
1067                                                                 fname, lineno, 0 );
1068                                                 }
1069
1070                                                 bdn->a_level = level;
1071                                         }
1072                                         continue;
1073                                 }
1074
1075                                 if ( strcasecmp( left, "dnattr" ) == 0 ) {
1076                                         if ( right == NULL || right[0] == '\0' ) {
1077                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1078                                                         "missing \"=\" in (or value after) \"%s\" "
1079                                                         "in by clause\n",
1080                                                         fname, lineno, left );
1081                                                 return acl_usage();
1082                                         }
1083
1084                                         if( bdn->a_at != NULL ) {
1085                                                 Debug( LDAP_DEBUG_ANY,
1086                                                         "%s: line %d: dnattr already specified.\n",
1087                                                         fname, lineno, 0 );
1088                                                 return acl_usage();
1089                                         }
1090
1091                                         rc = slap_str2ad( right, &bdn->a_at, &text );
1092
1093                                         if( rc != LDAP_SUCCESS ) {
1094                                                 char    buf[ SLAP_TEXT_BUFLEN ];
1095
1096                                                 snprintf( buf, sizeof( buf ),
1097                                                         "dnattr \"%s\": %s",
1098                                                         right, text );
1099                                                 Debug( LDAP_DEBUG_ANY,
1100                                                         "%s: line %d: %s\n",
1101                                                         fname, lineno, buf );
1102                                                 return acl_usage();
1103                                         }
1104
1105
1106                                         if( !is_at_syntax( bdn->a_at->ad_type,
1107                                                 SLAPD_DN_SYNTAX ) &&
1108                                                 !is_at_syntax( bdn->a_at->ad_type,
1109                                                 SLAPD_NAMEUID_SYNTAX ))
1110                                         {
1111                                                 char    buf[ SLAP_TEXT_BUFLEN ];
1112
1113                                                 snprintf( buf, sizeof( buf ),
1114                                                         "dnattr \"%s\": "
1115                                                         "inappropriate syntax: %s\n",
1116                                                         right,
1117                                                         bdn->a_at->ad_type->sat_syntax_oid );
1118                                                 Debug( LDAP_DEBUG_ANY,
1119                                                         "%s: line %d: %s\n",
1120                                                         fname, lineno, buf );
1121                                                 return acl_usage();
1122                                         }
1123
1124                                         if( bdn->a_at->ad_type->sat_equality == NULL ) {
1125                                                 Debug( LDAP_DEBUG_ANY,
1126                                                         "%s: line %d: dnattr \"%s\": "
1127                                                         "inappropriate matching (no EQUALITY)\n",
1128                                                         fname, lineno, right );
1129                                                 return acl_usage();
1130                                         }
1131
1132                                         continue;
1133                                 }
1134
1135                                 if ( strncasecmp( left, "group", STRLENOF( "group" ) ) == 0 ) {
1136                                         char *name = NULL;
1137                                         char *value = NULL;
1138
1139                                         switch ( sty ) {
1140                                         case ACL_STYLE_REGEX:
1141                                                 /* legacy, tolerated */
1142                                                 Debug( LDAP_DEBUG_CONFIG | LDAP_DEBUG_ACL,
1143                                                         "%s: line %d: "
1144                                                         "deprecated group style \"regex\"; "
1145                                                         "use \"expand\" instead.\n",
1146                                                         fname, lineno, 0 );
1147                                                 sty = ACL_STYLE_EXPAND;
1148                                                 break;
1149
1150                                         case ACL_STYLE_BASE:
1151                                                 /* legal, traditional */
1152                                         case ACL_STYLE_EXPAND:
1153                                                 /* legal, substring expansion; supersedes regex */
1154                                                 break;
1155
1156                                         default:
1157                                                 /* unknown */
1158                                                 Debug( LDAP_DEBUG_ANY,
1159                                                         "%s: line %d: "
1160                                                         "inappropriate style \"%s\" in by clause.\n",
1161                                                         fname, lineno, style );
1162                                                 return acl_usage();
1163                                         }
1164
1165                                         if ( right == NULL || right[0] == '\0' ) {
1166                                                 Debug( LDAP_DEBUG_ANY,
1167                                                         "%s: line %d: "
1168                                                         "missing \"=\" in (or value after) \"%s\" "
1169                                                         "in by clause.\n",
1170                                                         fname, lineno, left );
1171                                                 return acl_usage();
1172                                         }
1173
1174                                         if ( !BER_BVISEMPTY( &b->a_group_pat ) ) {
1175                                                 Debug( LDAP_DEBUG_ANY,
1176                                                         "%s: line %d: group pattern already specified.\n",
1177                                                         fname, lineno, 0 );
1178                                                 return acl_usage();
1179                                         }
1180
1181                                         /* format of string is
1182                                                 "group/objectClassValue/groupAttrName" */
1183                                         if ( ( value = strchr(left, '/') ) != NULL ) {
1184                                                 *value++ = '\0';
1185                                                 if ( *value && ( name = strchr( value, '/' ) ) != NULL ) {
1186                                                         *name++ = '\0';
1187                                                 }
1188                                         }
1189
1190                                         b->a_group_style = sty;
1191                                         if ( sty == ACL_STYLE_EXPAND ) {
1192                                                 acl_regex_normalized_dn( right, &bv );
1193                                                 if ( !ber_bvccmp( &bv, '*' ) ) {
1194                                                         regtest( fname, lineno, bv.bv_val );
1195                                                 }
1196                                                 b->a_group_pat = bv;
1197
1198                                         } else {
1199                                                 ber_str2bv( right, 0, 0, &bv );
1200                                                 rc = dnNormalize( 0, NULL, NULL, &bv,
1201                                                         &b->a_group_pat, NULL );
1202                                                 if ( rc != LDAP_SUCCESS ) {
1203                                                         Debug( LDAP_DEBUG_ANY,
1204                                                                 "%s: line %d: bad DN \"%s\".\n",
1205                                                                 fname, lineno, right );
1206                                                         return acl_usage();
1207                                                 }
1208                                         }
1209
1210                                         if ( value && *value ) {
1211                                                 b->a_group_oc = oc_find( value );
1212                                                 *--value = '/';
1213
1214                                                 if ( b->a_group_oc == NULL ) {
1215                                                         Debug( LDAP_DEBUG_ANY,
1216                                                                 "%s: line %d: group objectclass "
1217                                                                 "\"%s\" unknown.\n",
1218                                                                 fname, lineno, value );
1219                                                         return acl_usage();
1220                                                 }
1221
1222                                         } else {
1223                                                 b->a_group_oc = oc_find( SLAPD_GROUP_CLASS );
1224
1225                                                 if( b->a_group_oc == NULL ) {
1226                                                         Debug( LDAP_DEBUG_ANY,
1227                                                                 "%s: line %d: group default objectclass "
1228                                                                 "\"%s\" unknown.\n",
1229                                                                 fname, lineno, SLAPD_GROUP_CLASS );
1230                                                         return acl_usage();
1231                                                 }
1232                                         }
1233
1234                                         if ( is_object_subclass( slap_schema.si_oc_referral,
1235                                                 b->a_group_oc ) )
1236                                         {
1237                                                 Debug( LDAP_DEBUG_ANY,
1238                                                         "%s: line %d: group objectclass \"%s\" "
1239                                                         "is subclass of referral.\n",
1240                                                         fname, lineno, value );
1241                                                 return acl_usage();
1242                                         }
1243
1244                                         if ( is_object_subclass( slap_schema.si_oc_alias,
1245                                                 b->a_group_oc ) )
1246                                         {
1247                                                 Debug( LDAP_DEBUG_ANY,
1248                                                         "%s: line %d: group objectclass \"%s\" "
1249                                                         "is subclass of alias.\n",
1250                                                         fname, lineno, value );
1251                                                 return acl_usage();
1252                                         }
1253
1254                                         if ( name && *name ) {
1255                                                 rc = slap_str2ad( name, &b->a_group_at, &text );
1256
1257                                                 if( rc != LDAP_SUCCESS ) {
1258                                                         char    buf[ SLAP_TEXT_BUFLEN ];
1259
1260                                                         snprintf( buf, sizeof( buf ),
1261                                                                 "group \"%s\": %s.",
1262                                                                 right, text );
1263                                                         Debug( LDAP_DEBUG_ANY,
1264                                                                 "%s: line %d: %s\n",
1265                                                                 fname, lineno, buf );
1266                                                         return acl_usage();
1267                                                 }
1268                                                 *--name = '/';
1269
1270                                         } else {
1271                                                 rc = slap_str2ad( SLAPD_GROUP_ATTR, &b->a_group_at, &text );
1272
1273                                                 if ( rc != LDAP_SUCCESS ) {
1274                                                         char    buf[ SLAP_TEXT_BUFLEN ];
1275
1276                                                         snprintf( buf, sizeof( buf ),
1277                                                                 "group \"%s\": %s.",
1278                                                                 SLAPD_GROUP_ATTR, text );
1279                                                         Debug( LDAP_DEBUG_ANY,
1280                                                                 "%s: line %d: %s\n",
1281                                                                 fname, lineno, buf );
1282                                                         return acl_usage();
1283                                                 }
1284                                         }
1285
1286                                         if ( !is_at_syntax( b->a_group_at->ad_type,
1287                                                 SLAPD_DN_SYNTAX ) &&
1288                                                 !is_at_syntax( b->a_group_at->ad_type,
1289                                                 SLAPD_NAMEUID_SYNTAX ) &&
1290                                                 !is_at_subtype( b->a_group_at->ad_type, slap_schema.si_ad_labeledURI->ad_type ) )
1291                                         {
1292                                                 char    buf[ SLAP_TEXT_BUFLEN ];
1293
1294                                                 snprintf( buf, sizeof( buf ),
1295                                                         "group \"%s\": inappropriate syntax: %s.",
1296                                                         right,
1297                                                         b->a_group_at->ad_type->sat_syntax_oid );
1298                                                 Debug( LDAP_DEBUG_ANY,
1299                                                         "%s: line %d: %s\n",
1300                                                         fname, lineno, buf );
1301                                                 return acl_usage();
1302                                         }
1303
1304
1305                                         {
1306                                                 int rc;
1307                                                 struct berval vals[2];
1308
1309                                                 ber_str2bv( b->a_group_oc->soc_oid, 0, 0, &vals[0] );
1310                                                 BER_BVZERO( &vals[1] );
1311
1312                                                 rc = oc_check_allowed( b->a_group_at->ad_type,
1313                                                         vals, NULL );
1314
1315                                                 if( rc != 0 ) {
1316                                                         char    buf[ SLAP_TEXT_BUFLEN ];
1317
1318                                                         snprintf( buf, sizeof( buf ),
1319                                                                 "group: \"%s\" not allowed by \"%s\".",
1320                                                                 b->a_group_at->ad_cname.bv_val,
1321                                                                 b->a_group_oc->soc_oid );
1322                                                         Debug( LDAP_DEBUG_ANY, "%s: line %d: %s\n",
1323                                                                 fname, lineno, buf );
1324                                                         return acl_usage();
1325                                                 }
1326                                         }
1327                                         continue;
1328                                 }
1329
1330                                 if ( strcasecmp( left, "peername" ) == 0 ) {
1331                                         switch ( sty ) {
1332                                         case ACL_STYLE_REGEX:
1333                                         case ACL_STYLE_BASE:
1334                                                 /* legal, traditional */
1335                                         case ACL_STYLE_EXPAND:
1336                                                 /* cheap replacement to regex for simple expansion */
1337                                         case ACL_STYLE_IP:
1338                                         case ACL_STYLE_PATH:
1339                                                 /* legal, peername specific */
1340                                                 break;
1341
1342                                         default:
1343                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1344                                                         "inappropriate style \"%s\" in by clause.\n",
1345                                                     fname, lineno, style );
1346                                                 return acl_usage();
1347                                         }
1348
1349                                         if ( right == NULL || right[0] == '\0' ) {
1350                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1351                                                         "missing \"=\" in (or value after) \"%s\" "
1352                                                         "in by clause.\n",
1353                                                         fname, lineno, left );
1354                                                 return acl_usage();
1355                                         }
1356
1357                                         if ( !BER_BVISEMPTY( &b->a_peername_pat ) ) {
1358                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1359                                                         "peername pattern already specified.\n",
1360                                                         fname, lineno, 0 );
1361                                                 return acl_usage();
1362                                         }
1363
1364                                         b->a_peername_style = sty;
1365                                         if ( sty == ACL_STYLE_REGEX ) {
1366                                                 acl_regex_normalized_dn( right, &bv );
1367                                                 if ( !ber_bvccmp( &bv, '*' ) ) {
1368                                                         regtest( fname, lineno, bv.bv_val );
1369                                                 }
1370                                                 b->a_peername_pat = bv;
1371
1372                                         } else {
1373                                                 ber_str2bv( right, 0, 1, &b->a_peername_pat );
1374
1375                                                 if ( sty == ACL_STYLE_IP ) {
1376                                                         char            *addr = NULL,
1377                                                                         *mask = NULL,
1378                                                                         *port = NULL;
1379
1380                                                         split( right, '{', &addr, &port );
1381                                                         split( addr, '%', &addr, &mask );
1382
1383                                                         b->a_peername_addr = inet_addr( addr );
1384                                                         if ( b->a_peername_addr == (unsigned long)(-1) ) {
1385                                                                 /* illegal address */
1386                                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1387                                                                         "illegal peername address \"%s\".\n",
1388                                                                         fname, lineno, addr );
1389                                                                 return acl_usage();
1390                                                         }
1391
1392                                                         b->a_peername_mask = (unsigned long)(-1);
1393                                                         if ( mask != NULL ) {
1394                                                                 b->a_peername_mask = inet_addr( mask );
1395                                                                 if ( b->a_peername_mask ==
1396                                                                         (unsigned long)(-1) )
1397                                                                 {
1398                                                                         /* illegal mask */
1399                                                                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1400                                                                                 "illegal peername address mask "
1401                                                                                 "\"%s\".\n",
1402                                                                                 fname, lineno, mask );
1403                                                                         return acl_usage();
1404                                                                 }
1405                                                         }
1406
1407                                                         b->a_peername_port = -1;
1408                                                         if ( port ) {
1409                                                                 char    *end = NULL;
1410
1411                                                                 b->a_peername_port = strtol( port, &end, 10 );
1412                                                                 if ( end == port || end[0] != '}' ) {
1413                                                                         /* illegal port */
1414                                                                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1415                                                                                 "illegal peername port specification "
1416                                                                                 "\"{%s}\".\n",
1417                                                                                 fname, lineno, port );
1418                                                                         return acl_usage();
1419                                                                 }
1420                                                         }
1421                                                 }
1422                                         }
1423                                         continue;
1424                                 }
1425
1426                                 if ( strcasecmp( left, "sockname" ) == 0 ) {
1427                                         switch ( sty ) {
1428                                         case ACL_STYLE_REGEX:
1429                                         case ACL_STYLE_BASE:
1430                                                 /* legal, traditional */
1431                                         case ACL_STYLE_EXPAND:
1432                                                 /* cheap replacement to regex for simple expansion */
1433                                                 break;
1434
1435                                         default:
1436                                                 /* unknown */
1437                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1438                                                         "inappropriate style \"%s\" in by clause\n",
1439                                                     fname, lineno, style );
1440                                                 return acl_usage();
1441                                         }
1442
1443                                         if ( right == NULL || right[0] == '\0' ) {
1444                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1445                                                         "missing \"=\" in (or value after) \"%s\" "
1446                                                         "in by clause\n",
1447                                                         fname, lineno, left );
1448                                                 return acl_usage();
1449                                         }
1450
1451                                         if ( !BER_BVISNULL( &b->a_sockname_pat ) ) {
1452                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1453                                                         "sockname pattern already specified.\n",
1454                                                         fname, lineno, 0 );
1455                                                 return acl_usage();
1456                                         }
1457
1458                                         b->a_sockname_style = sty;
1459                                         if ( sty == ACL_STYLE_REGEX ) {
1460                                                 acl_regex_normalized_dn( right, &bv );
1461                                                 if ( !ber_bvccmp( &bv, '*' ) ) {
1462                                                         regtest( fname, lineno, bv.bv_val );
1463                                                 }
1464                                                 b->a_sockname_pat = bv;
1465
1466                                         } else {
1467                                                 ber_str2bv( right, 0, 1, &b->a_sockname_pat );
1468                                         }
1469                                         continue;
1470                                 }
1471
1472                                 if ( strcasecmp( left, "domain" ) == 0 ) {
1473                                         switch ( sty ) {
1474                                         case ACL_STYLE_REGEX:
1475                                         case ACL_STYLE_BASE:
1476                                         case ACL_STYLE_SUBTREE:
1477                                                 /* legal, traditional */
1478                                                 break;
1479
1480                                         case ACL_STYLE_EXPAND:
1481                                                 /* tolerated: means exact,expand */
1482                                                 if ( expand ) {
1483                                                         Debug( LDAP_DEBUG_ANY,
1484                                                                 "%s: line %d: "
1485                                                                 "\"expand\" modifier "
1486                                                                 "with \"expand\" style.\n",
1487                                                                 fname, lineno, 0 );
1488                                                 }
1489                                                 sty = ACL_STYLE_BASE;
1490                                                 expand = 1;
1491                                                 break;
1492
1493                                         default:
1494                                                 /* unknown */
1495                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1496                                                         "inappropriate style \"%s\" in by clause.\n",
1497                                                     fname, lineno, style );
1498                                                 return acl_usage();
1499                                         }
1500
1501                                         if ( right == NULL || right[0] == '\0' ) {
1502                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1503                                                         "missing \"=\" in (or value after) \"%s\" "
1504                                                         "in by clause.\n",
1505                                                         fname, lineno, left );
1506                                                 return acl_usage();
1507                                         }
1508
1509                                         if ( !BER_BVISEMPTY( &b->a_domain_pat ) ) {
1510                                                 Debug( LDAP_DEBUG_ANY,
1511                                                         "%s: line %d: domain pattern already specified.\n",
1512                                                         fname, lineno, 0 );
1513                                                 return acl_usage();
1514                                         }
1515
1516                                         b->a_domain_style = sty;
1517                                         b->a_domain_expand = expand;
1518                                         if ( sty == ACL_STYLE_REGEX ) {
1519                                                 acl_regex_normalized_dn( right, &bv );
1520                                                 if ( !ber_bvccmp( &bv, '*' ) ) {
1521                                                         regtest( fname, lineno, bv.bv_val );
1522                                                 }
1523                                                 b->a_domain_pat = bv;
1524
1525                                         } else {
1526                                                 ber_str2bv( right, 0, 1, &b->a_domain_pat );
1527                                         }
1528                                         continue;
1529                                 }
1530
1531                                 if ( strcasecmp( left, "sockurl" ) == 0 ) {
1532                                         switch ( sty ) {
1533                                         case ACL_STYLE_REGEX:
1534                                         case ACL_STYLE_BASE:
1535                                                 /* legal, traditional */
1536                                         case ACL_STYLE_EXPAND:
1537                                                 /* cheap replacement to regex for simple expansion */
1538                                                 break;
1539
1540                                         default:
1541                                                 /* unknown */
1542                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1543                                                         "inappropriate style \"%s\" in by clause.\n",
1544                                                     fname, lineno, style );
1545                                                 return acl_usage();
1546                                         }
1547
1548                                         if ( right == NULL || right[0] == '\0' ) {
1549                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1550                                                         "missing \"=\" in (or value after) \"%s\" "
1551                                                         "in by clause.\n",
1552                                                         fname, lineno, left );
1553                                                 return acl_usage();
1554                                         }
1555
1556                                         if ( !BER_BVISEMPTY( &b->a_sockurl_pat ) ) {
1557                                                 Debug( LDAP_DEBUG_ANY,
1558                                                         "%s: line %d: sockurl pattern already specified.\n",
1559                                                         fname, lineno, 0 );
1560                                                 return acl_usage();
1561                                         }
1562
1563                                         b->a_sockurl_style = sty;
1564                                         if ( sty == ACL_STYLE_REGEX ) {
1565                                                 acl_regex_normalized_dn( right, &bv );
1566                                                 if ( !ber_bvccmp( &bv, '*' ) ) {
1567                                                         regtest( fname, lineno, bv.bv_val );
1568                                                 }
1569                                                 b->a_sockurl_pat = bv;
1570
1571                                         } else {
1572                                                 ber_str2bv( right, 0, 1, &b->a_sockurl_pat );
1573                                         }
1574                                         continue;
1575                                 }
1576
1577                                 if ( strcasecmp( left, "set" ) == 0 ) {
1578                                         switch ( sty ) {
1579                                                 /* deprecated */
1580                                         case ACL_STYLE_REGEX:
1581                                                 Debug( LDAP_DEBUG_CONFIG | LDAP_DEBUG_ACL,
1582                                                         "%s: line %d: "
1583                                                         "deprecated set style "
1584                                                         "\"regex\" in <by> clause; "
1585                                                         "use \"expand\" instead.\n",
1586                                                         fname, lineno, 0 );
1587                                                 sty = ACL_STYLE_EXPAND;
1588                                                 /* FALLTHRU */
1589
1590                                         case ACL_STYLE_BASE:
1591                                         case ACL_STYLE_EXPAND:
1592                                                 break;
1593
1594                                         default:
1595                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1596                                                         "inappropriate style \"%s\" in by clause.\n",
1597                                                         fname, lineno, style );
1598                                                 return acl_usage();
1599                                         }
1600
1601                                         if ( !BER_BVISEMPTY( &b->a_set_pat ) ) {
1602                                                 Debug( LDAP_DEBUG_ANY,
1603                                                         "%s: line %d: set attribute already specified.\n",
1604                                                         fname, lineno, 0 );
1605                                                 return acl_usage();
1606                                         }
1607
1608                                         if ( right == NULL || *right == '\0' ) {
1609                                                 Debug( LDAP_DEBUG_ANY,
1610                                                         "%s: line %d: no set is defined.\n",
1611                                                         fname, lineno, 0 );
1612                                                 return acl_usage();
1613                                         }
1614
1615                                         b->a_set_style = sty;
1616                                         ber_str2bv( right, 0, 1, &b->a_set_pat );
1617
1618                                         continue;
1619                                 }
1620
1621 #ifdef SLAP_DYNACL
1622                                 {
1623                                         char            *name = NULL,
1624                                                         *opts = NULL;
1625
1626                                         if ( strcasecmp( left, "aci" ) == 0 ) {
1627                                                 name = "aci";
1628
1629                                         } else if ( strncasecmp( left, "dynacl/", STRLENOF( "dynacl/" ) ) == 0 ) {
1630                                                 name = &left[ STRLENOF( "dynacl/" ) ];
1631                                                 opts = strchr( name, '/' );
1632                                                 if ( opts ) {
1633                                                         opts[ 0 ] = '\0';
1634                                                         opts++;
1635                                                 }
1636                                         }
1637
1638                                         if ( name ) {
1639                                                 if ( slap_dynacl_config( fname, lineno, b, name, opts, sty, right ) ) {
1640                                                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1641                                                                 "unable to configure dynacl \"%s\".\n",
1642                                                                 fname, lineno, name );
1643                                                         return acl_usage();
1644                                                 }
1645
1646                                                 continue;
1647                                         }
1648                                 }
1649 #else /* ! SLAP_DYNACL */
1650
1651 #ifdef SLAPD_ACI_ENABLED
1652                                 if ( strcasecmp( left, "aci" ) == 0 ) {
1653                                         if (sty != ACL_STYLE_REGEX && sty != ACL_STYLE_BASE) {
1654                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1655                                                         "inappropriate style \"%s\" in by clause.\n",
1656                                                     fname, lineno, style );
1657                                                 return acl_usage();
1658                                         }
1659
1660                                         if( b->a_aci_at != NULL ) {
1661                                                 Debug( LDAP_DEBUG_ANY,
1662                                                         "%s: line %d: ACI attribute already specified.\n",
1663                                                         fname, lineno, 0 );
1664                                                 return acl_usage();
1665                                         }
1666
1667                                         if ( right != NULL && *right != '\0' ) {
1668                                                 rc = slap_str2ad( right, &b->a_aci_at, &text );
1669
1670                                                 if( rc != LDAP_SUCCESS ) {
1671                                                         char    buf[ SLAP_TEXT_BUFLEN ];
1672
1673                                                         snprintf( buf, sizeof( buf ),
1674                                                                 "aci \"%s\": %s.",
1675                                                                 right, text );
1676                                                         Debug( LDAP_DEBUG_ANY,
1677                                                                 "%s: line %d: %s\n",
1678                                                                 fname, lineno, buf );
1679                                                         return acl_usage();
1680                                                 }
1681
1682                                         } else {
1683                                                 b->a_aci_at = slap_ad_aci;
1684                                         }
1685
1686                                         if( !is_at_syntax( b->a_aci_at->ad_type,
1687                                                 SLAPD_ACI_SYNTAX) )
1688                                         {
1689                                                 char    buf[ SLAP_TEXT_BUFLEN ];
1690
1691                                                 snprintf( buf, sizeof( buf ),
1692                                                         "ACI \"%s\": inappropriate syntax: %s.",
1693                                                         right,
1694                                                         b->a_aci_at->ad_type->sat_syntax_oid );
1695                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: %s\n",
1696                                                         fname, lineno, buf );
1697                                                 return acl_usage();
1698                                         }
1699
1700                                         continue;
1701                                 }
1702 #endif /* SLAPD_ACI_ENABLED */
1703 #endif /* ! SLAP_DYNACL */
1704
1705                                 if ( strcasecmp( left, "ssf" ) == 0 ) {
1706                                         if ( sty != ACL_STYLE_REGEX && sty != ACL_STYLE_BASE ) {
1707                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1708                                                         "inappropriate style \"%s\" in by clause.\n",
1709                                                     fname, lineno, style );
1710                                                 return acl_usage();
1711                                         }
1712
1713                                         if ( b->a_authz.sai_ssf ) {
1714                                                 Debug( LDAP_DEBUG_ANY,
1715                                                         "%s: line %d: ssf attribute already specified.\n",
1716                                                         fname, lineno, 0 );
1717                                                 return acl_usage();
1718                                         }
1719
1720                                         if ( right == NULL || *right == '\0' ) {
1721                                                 Debug( LDAP_DEBUG_ANY,
1722                                                         "%s: line %d: no ssf is defined.\n",
1723                                                         fname, lineno, 0 );
1724                                                 return acl_usage();
1725                                         }
1726
1727                                         if ( lutil_atou( &b->a_authz.sai_ssf, right ) != 0 ) {
1728                                                 Debug( LDAP_DEBUG_ANY,
1729                                                         "%s: line %d: unable to parse ssf value (%s).\n",
1730                                                         fname, lineno, right );
1731                                                 return acl_usage();
1732                                         }
1733
1734                                         if ( !b->a_authz.sai_ssf ) {
1735                                                 Debug( LDAP_DEBUG_ANY,
1736                                                         "%s: line %d: invalid ssf value (%s).\n",
1737                                                         fname, lineno, right );
1738                                                 return acl_usage();
1739                                         }
1740                                         continue;
1741                                 }
1742
1743                                 if ( strcasecmp( left, "transport_ssf" ) == 0 ) {
1744                                         if ( sty != ACL_STYLE_REGEX && sty != ACL_STYLE_BASE ) {
1745                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1746                                                         "inappropriate style \"%s\" in by clause.\n",
1747                                                         fname, lineno, style );
1748                                                 return acl_usage();
1749                                         }
1750
1751                                         if ( b->a_authz.sai_transport_ssf ) {
1752                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1753                                                         "transport_ssf attribute already specified.\n",
1754                                                         fname, lineno, 0 );
1755                                                 return acl_usage();
1756                                         }
1757
1758                                         if ( right == NULL || *right == '\0' ) {
1759                                                 Debug( LDAP_DEBUG_ANY,
1760                                                         "%s: line %d: no transport_ssf is defined.\n",
1761                                                         fname, lineno, 0 );
1762                                                 return acl_usage();
1763                                         }
1764
1765                                         if ( lutil_atou( &b->a_authz.sai_transport_ssf, right ) != 0 ) {
1766                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1767                                                         "unable to parse transport_ssf value (%s).\n",
1768                                                         fname, lineno, right );
1769                                                 return acl_usage();
1770                                         }
1771
1772                                         if ( !b->a_authz.sai_transport_ssf ) {
1773                                                 Debug( LDAP_DEBUG_ANY,
1774                                                         "%s: line %d: invalid transport_ssf value (%s).\n",
1775                                                         fname, lineno, right );
1776                                                 return acl_usage();
1777                                         }
1778                                         continue;
1779                                 }
1780
1781                                 if ( strcasecmp( left, "tls_ssf" ) == 0 ) {
1782                                         if ( sty != ACL_STYLE_REGEX && sty != ACL_STYLE_BASE ) {
1783                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1784                                                         "inappropriate style \"%s\" in by clause.\n",
1785                                                         fname, lineno, style );
1786                                                 return acl_usage();
1787                                         }
1788
1789                                         if ( b->a_authz.sai_tls_ssf ) {
1790                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1791                                                         "tls_ssf attribute already specified.\n",
1792                                                         fname, lineno, 0 );
1793                                                 return acl_usage();
1794                                         }
1795
1796                                         if ( right == NULL || *right == '\0' ) {
1797                                                 Debug( LDAP_DEBUG_ANY,
1798                                                         "%s: line %d: no tls_ssf is defined\n",
1799                                                         fname, lineno, 0 );
1800                                                 return acl_usage();
1801                                         }
1802
1803                                         if ( lutil_atou( &b->a_authz.sai_tls_ssf, right ) != 0 ) {
1804                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1805                                                         "unable to parse tls_ssf value (%s).\n",
1806                                                         fname, lineno, right );
1807                                                 return acl_usage();
1808                                         }
1809
1810                                         if ( !b->a_authz.sai_tls_ssf ) {
1811                                                 Debug( LDAP_DEBUG_ANY,
1812                                                         "%s: line %d: invalid tls_ssf value (%s).\n",
1813                                                         fname, lineno, right );
1814                                                 return acl_usage();
1815                                         }
1816                                         continue;
1817                                 }
1818
1819                                 if ( strcasecmp( left, "sasl_ssf" ) == 0 ) {
1820                                         if ( sty != ACL_STYLE_REGEX && sty != ACL_STYLE_BASE ) {
1821                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1822                                                         "inappropriate style \"%s\" in by clause.\n",
1823                                                         fname, lineno, style );
1824                                                 return acl_usage();
1825                                         }
1826
1827                                         if ( b->a_authz.sai_sasl_ssf ) {
1828                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1829                                                         "sasl_ssf attribute already specified.\n",
1830                                                         fname, lineno, 0 );
1831                                                 return acl_usage();
1832                                         }
1833
1834                                         if ( right == NULL || *right == '\0' ) {
1835                                                 Debug( LDAP_DEBUG_ANY,
1836                                                         "%s: line %d: no sasl_ssf is defined.\n",
1837                                                         fname, lineno, 0 );
1838                                                 return acl_usage();
1839                                         }
1840
1841                                         if ( lutil_atou( &b->a_authz.sai_sasl_ssf, right ) != 0 ) {
1842                                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1843                                                         "unable to parse sasl_ssf value (%s).\n",
1844                                                         fname, lineno, right );
1845                                                 return acl_usage();
1846                                         }
1847
1848                                         if ( !b->a_authz.sai_sasl_ssf ) {
1849                                                 Debug( LDAP_DEBUG_ANY,
1850                                                         "%s: line %d: invalid sasl_ssf value (%s).\n",
1851                                                         fname, lineno, right );
1852                                                 return acl_usage();
1853                                         }
1854                                         continue;
1855                                 }
1856
1857                                 if ( right != NULL ) {
1858                                         /* unsplit */
1859                                         right[-1] = '=';
1860                                 }
1861                                 break;
1862                         }
1863
1864                         if ( i == argc || ( strcasecmp( left, "stop" ) == 0 ) ) {
1865                                 /* out of arguments or plain stop */
1866
1867                                 ACL_PRIV_ASSIGN( b->a_access_mask, ACL_PRIV_ADDITIVE );
1868                                 b->a_type = ACL_STOP;
1869
1870                                 access_append( &a->acl_access, b );
1871                                 continue;
1872                         }
1873
1874                         if ( strcasecmp( left, "continue" ) == 0 ) {
1875                                 /* plain continue */
1876
1877                                 ACL_PRIV_ASSIGN( b->a_access_mask, ACL_PRIV_ADDITIVE );
1878                                 b->a_type = ACL_CONTINUE;
1879
1880                                 access_append( &a->acl_access, b );
1881                                 continue;
1882                         }
1883
1884                         if ( strcasecmp( left, "break" ) == 0 ) {
1885                                 /* plain continue */
1886
1887                                 ACL_PRIV_ASSIGN(b->a_access_mask, ACL_PRIV_ADDITIVE);
1888                                 b->a_type = ACL_BREAK;
1889
1890                                 access_append( &a->acl_access, b );
1891                                 continue;
1892                         }
1893
1894                         if ( strcasecmp( left, "by" ) == 0 ) {
1895                                 /* we've gone too far */
1896                                 --i;
1897                                 ACL_PRIV_ASSIGN( b->a_access_mask, ACL_PRIV_ADDITIVE );
1898                                 b->a_type = ACL_STOP;
1899
1900                                 access_append( &a->acl_access, b );
1901                                 continue;
1902                         }
1903
1904                         /* get <access> */
1905                         if ( strncasecmp( left, "self", STRLENOF( "self" ) ) == 0 ) {
1906                                 b->a_dn_self = 1;
1907                                 ACL_PRIV_ASSIGN( b->a_access_mask, str2accessmask( &left[ STRLENOF( "self" ) ] ) );
1908
1909                         } else if ( strncasecmp( left, "realself", STRLENOF( "realself" ) ) == 0 ) {
1910                                 b->a_realdn_self = 1;
1911                                 ACL_PRIV_ASSIGN( b->a_access_mask, str2accessmask( &left[ STRLENOF( "realself" ) ] ) );
1912
1913                         } else {
1914                                 ACL_PRIV_ASSIGN( b->a_access_mask, str2accessmask( left ) );
1915                         }
1916
1917                         if ( ACL_IS_INVALID( b->a_access_mask ) ) {
1918                                 Debug( LDAP_DEBUG_ANY,
1919                                         "%s: line %d: expecting <access> got \"%s\".\n",
1920                                         fname, lineno, left );
1921                                 return acl_usage();
1922                         }
1923
1924                         b->a_type = ACL_STOP;
1925
1926                         if ( ++i == argc ) {
1927                                 /* out of arguments or plain stop */
1928                                 access_append( &a->acl_access, b );
1929                                 continue;
1930                         }
1931
1932                         if ( strcasecmp( argv[i], "continue" ) == 0 ) {
1933                                 /* plain continue */
1934                                 b->a_type = ACL_CONTINUE;
1935
1936                         } else if ( strcasecmp( argv[i], "break" ) == 0 ) {
1937                                 /* plain continue */
1938                                 b->a_type = ACL_BREAK;
1939
1940                         } else if ( strcasecmp( argv[i], "stop" ) != 0 ) {
1941                                 /* gone to far */
1942                                 i--;
1943                         }
1944
1945                         access_append( &a->acl_access, b );
1946
1947                 } else {
1948                         Debug( LDAP_DEBUG_ANY,
1949                                 "%s: line %d: expecting \"to\" "
1950                                 "or \"by\" got \"%s\"\n",
1951                                 fname, lineno, argv[i] );
1952                         return acl_usage();
1953                 }
1954         }
1955
1956         /* if we have no real access clause, complain and do nothing */
1957         if ( a == NULL ) {
1958                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1959                         "warning: no access clause(s) "
1960                         "specified in access line"
1961                         SLAPD_CONF_UNKNOWN_IGNORED ".\n",
1962                         fname, lineno, 0 );
1963 #ifdef SLAPD_CONF_UNKNOWN_BAILOUT
1964                 return acl_usage();
1965 #endif /* SLAPD_CONF_UNKNOWN_BAILOUT */
1966
1967         } else {
1968 #ifdef LDAP_DEBUG
1969                 if ( ldap_debug & LDAP_DEBUG_ACL ) {
1970                         print_acl( be, a );
1971                 }
1972 #endif
1973
1974                 if ( a->acl_access == NULL ) {
1975                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1976                                 "warning: no by clause(s) "
1977                                 "specified in access line"
1978                                 SLAPD_CONF_UNKNOWN_IGNORED ".\n",
1979                                 fname, lineno, 0 );
1980 #ifdef SLAPD_CONF_UNKNOWN_BAILOUT
1981                         return acl_usage();
1982 #endif /* SLAPD_CONF_UNKNOWN_BAILOUT */
1983                 }
1984
1985                 if ( be != NULL ) {
1986                         if ( !BER_BVISNULL( &be->be_nsuffix[ 1 ] ) ) {
1987                                 Debug( LDAP_DEBUG_ACL, "%s: line %d: warning: "
1988                                         "scope checking only applies to single-valued "
1989                                         "suffix databases\n",
1990                                         fname, lineno, 0 );
1991                                 /* go ahead, since checking is not authoritative */
1992                         }
1993
1994                         switch ( check_scope( be, a ) ) {
1995                         case ACL_SCOPE_UNKNOWN:
1996                                 Debug( LDAP_DEBUG_ACL, "%s: line %d: warning: "
1997                                         "cannot assess the validity of the ACL scope within "
1998                                         "backend naming context\n",
1999                                         fname, lineno, 0 );
2000                                 break;
2001
2002                         case ACL_SCOPE_WARN:
2003                                 Debug( LDAP_DEBUG_ACL, "%s: line %d: warning: "
2004                                         "ACL could be out of scope within backend naming context\n",
2005                                         fname, lineno, 0 );
2006                                 break;
2007
2008                         case ACL_SCOPE_PARTIAL:
2009                                 Debug( LDAP_DEBUG_ACL, "%s: line %d: warning: "
2010                                         "ACL appears to be partially out of scope within "
2011                                         "backend naming context\n",
2012                                         fname, lineno, 0 );
2013                                 break;
2014
2015                         case ACL_SCOPE_ERR:
2016                                 Debug( LDAP_DEBUG_ACL, "%s: line %d: warning: "
2017                                         "ACL appears to be out of scope within "
2018                                         "backend naming context\n",
2019                                         fname, lineno, 0 );
2020                                 break;
2021
2022                         default:
2023                                 break;
2024                         }
2025                         acl_append( &be->be_acl, a, pos );
2026
2027                 } else {
2028                         acl_append( &frontendDB->be_acl, a, pos );
2029                 }
2030         }
2031
2032         return 0;
2033 }
2034
2035 char *
2036 accessmask2str( slap_mask_t mask, char *buf, int debug )
2037 {
2038         int     none = 1;
2039         char    *ptr = buf;
2040
2041         assert( buf != NULL );
2042
2043         if ( ACL_IS_INVALID( mask ) ) {
2044                 return "invalid";
2045         }
2046
2047         buf[0] = '\0';
2048
2049         if ( ACL_IS_LEVEL( mask ) ) {
2050                 if ( ACL_LVL_IS_NONE(mask) ) {
2051                         ptr = lutil_strcopy( ptr, "none" );
2052
2053                 } else if ( ACL_LVL_IS_DISCLOSE(mask) ) {
2054                         ptr = lutil_strcopy( ptr, "disclose" );
2055
2056                 } else if ( ACL_LVL_IS_AUTH(mask) ) {
2057                         ptr = lutil_strcopy( ptr, "auth" );
2058
2059                 } else if ( ACL_LVL_IS_COMPARE(mask) ) {
2060                         ptr = lutil_strcopy( ptr, "compare" );
2061
2062                 } else if ( ACL_LVL_IS_SEARCH(mask) ) {
2063                         ptr = lutil_strcopy( ptr, "search" );
2064
2065                 } else if ( ACL_LVL_IS_READ(mask) ) {
2066                         ptr = lutil_strcopy( ptr, "read" );
2067
2068                 } else if ( ACL_LVL_IS_WRITE(mask) ) {
2069                         ptr = lutil_strcopy( ptr, "write" );
2070
2071                 } else if ( ACL_LVL_IS_WADD(mask) ) {
2072                         ptr = lutil_strcopy( ptr, "add" );
2073
2074                 } else if ( ACL_LVL_IS_WDEL(mask) ) {
2075                         ptr = lutil_strcopy( ptr, "delete" );
2076
2077                 } else if ( ACL_LVL_IS_MANAGE(mask) ) {
2078                         ptr = lutil_strcopy( ptr, "manage" );
2079
2080                 } else {
2081                         ptr = lutil_strcopy( ptr, "unknown" );
2082                 }
2083
2084                 if ( !debug ) {
2085                         *ptr = '\0';
2086                         return buf;
2087                 }
2088                 *ptr++ = '(';
2089         }
2090
2091         if( ACL_IS_ADDITIVE( mask ) ) {
2092                 *ptr++ = '+';
2093
2094         } else if( ACL_IS_SUBTRACTIVE( mask ) ) {
2095                 *ptr++ = '-';
2096
2097         } else {
2098                 *ptr++ = '=';
2099         }
2100
2101         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_MANAGE) ) {
2102                 none = 0;
2103                 *ptr++ = 'm';
2104         }
2105
2106         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_WRITE) ) {
2107                 none = 0;
2108                 *ptr++ = 'w';
2109
2110         } else if ( ACL_PRIV_ISSET(mask, ACL_PRIV_WADD) ) {
2111                 none = 0;
2112                 *ptr++ = 'a';
2113
2114         } else if ( ACL_PRIV_ISSET(mask, ACL_PRIV_WDEL) ) {
2115                 none = 0;
2116                 *ptr++ = 'z';
2117         }
2118
2119         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_READ) ) {
2120                 none = 0;
2121                 *ptr++ = 'r';
2122         }
2123
2124         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_SEARCH) ) {
2125                 none = 0;
2126                 *ptr++ = 's';
2127         }
2128
2129         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_COMPARE) ) {
2130                 none = 0;
2131                 *ptr++ = 'c';
2132         }
2133
2134         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_AUTH) ) {
2135                 none = 0;
2136                 *ptr++ = 'x';
2137         }
2138
2139         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_DISCLOSE) ) {
2140                 none = 0;
2141                 *ptr++ = 'd';
2142         }
2143
2144         if ( none && ACL_PRIV_ISSET(mask, ACL_PRIV_NONE) ) {
2145                 none = 0;
2146                 *ptr++ = '0';
2147         }
2148
2149         if ( none ) {
2150                 ptr = buf;
2151         }
2152
2153         if ( ACL_IS_LEVEL( mask ) ) {
2154                 *ptr++ = ')';
2155         }
2156
2157         *ptr = '\0';
2158
2159         return buf;
2160 }
2161
2162 slap_mask_t
2163 str2accessmask( const char *str )
2164 {
2165         slap_mask_t     mask;
2166
2167         if( !ASCII_ALPHA(str[0]) ) {
2168                 int i;
2169
2170                 if ( str[0] == '=' ) {
2171                         ACL_INIT(mask);
2172
2173                 } else if( str[0] == '+' ) {
2174                         ACL_PRIV_ASSIGN(mask, ACL_PRIV_ADDITIVE);
2175
2176                 } else if( str[0] == '-' ) {
2177                         ACL_PRIV_ASSIGN(mask, ACL_PRIV_SUBSTRACTIVE);
2178
2179                 } else {
2180                         ACL_INVALIDATE(mask);
2181                         return mask;
2182                 }
2183
2184                 for( i=1; str[i] != '\0'; i++ ) {
2185                         if( TOLOWER((unsigned char) str[i]) == 'm' ) {
2186                                 ACL_PRIV_SET(mask, ACL_PRIV_MANAGE);
2187
2188                         } else if( TOLOWER((unsigned char) str[i]) == 'w' ) {
2189                                 ACL_PRIV_SET(mask, ACL_PRIV_WRITE);
2190
2191                         } else if( TOLOWER((unsigned char) str[i]) == 'a' ) {
2192                                 ACL_PRIV_SET(mask, ACL_PRIV_WADD);
2193
2194                         } else if( TOLOWER((unsigned char) str[i]) == 'z' ) {
2195                                 ACL_PRIV_SET(mask, ACL_PRIV_WDEL);
2196
2197                         } else if( TOLOWER((unsigned char) str[i]) == 'r' ) {
2198                                 ACL_PRIV_SET(mask, ACL_PRIV_READ);
2199
2200                         } else if( TOLOWER((unsigned char) str[i]) == 's' ) {
2201                                 ACL_PRIV_SET(mask, ACL_PRIV_SEARCH);
2202
2203                         } else if( TOLOWER((unsigned char) str[i]) == 'c' ) {
2204                                 ACL_PRIV_SET(mask, ACL_PRIV_COMPARE);
2205
2206                         } else if( TOLOWER((unsigned char) str[i]) == 'x' ) {
2207                                 ACL_PRIV_SET(mask, ACL_PRIV_AUTH);
2208
2209                         } else if( TOLOWER((unsigned char) str[i]) == 'd' ) {
2210                                 ACL_PRIV_SET(mask, ACL_PRIV_DISCLOSE);
2211
2212                         } else if( str[i] != '0' ) {
2213                                 ACL_INVALIDATE(mask);
2214                                 return mask;
2215                         }
2216                 }
2217
2218                 return mask;
2219         }
2220
2221         if ( strcasecmp( str, "none" ) == 0 ) {
2222                 ACL_LVL_ASSIGN_NONE(mask);
2223
2224         } else if ( strcasecmp( str, "disclose" ) == 0 ) {
2225                 ACL_LVL_ASSIGN_DISCLOSE(mask);
2226
2227         } else if ( strcasecmp( str, "auth" ) == 0 ) {
2228                 ACL_LVL_ASSIGN_AUTH(mask);
2229
2230         } else if ( strcasecmp( str, "compare" ) == 0 ) {
2231                 ACL_LVL_ASSIGN_COMPARE(mask);
2232
2233         } else if ( strcasecmp( str, "search" ) == 0 ) {
2234                 ACL_LVL_ASSIGN_SEARCH(mask);
2235
2236         } else if ( strcasecmp( str, "read" ) == 0 ) {
2237                 ACL_LVL_ASSIGN_READ(mask);
2238
2239         } else if ( strcasecmp( str, "add" ) == 0 ) {
2240                 ACL_LVL_ASSIGN_WADD(mask);
2241
2242         } else if ( strcasecmp( str, "delete" ) == 0 ) {
2243                 ACL_LVL_ASSIGN_WDEL(mask);
2244
2245         } else if ( strcasecmp( str, "write" ) == 0 ) {
2246                 ACL_LVL_ASSIGN_WRITE(mask);
2247
2248         } else if ( strcasecmp( str, "manage" ) == 0 ) {
2249                 ACL_LVL_ASSIGN_MANAGE(mask);
2250
2251         } else {
2252                 ACL_INVALIDATE( mask );
2253         }
2254
2255         return mask;
2256 }
2257
2258 static int
2259 acl_usage( void )
2260 {
2261         char *access =
2262                 "<access clause> ::= access to <what> "
2263                                 "[ by <who> <access> [ <control> ] ]+ \n";
2264         char *what =
2265                 "<what> ::= * | [dn[.<dnstyle>]=<DN>] [filter=<filter>] [attrs=<attrspec>]\n"
2266                 "<attrspec> ::= <attrname> [val[/<matchingRule>][.<attrstyle>]=<value>] | <attrlist>\n"
2267                 "<attrlist> ::= <attr> [ , <attrlist> ]\n"
2268                 "<attr> ::= <attrname> | @<objectClass> | !<objectClass> | entry | children\n";
2269
2270         char *who =
2271                 "<who> ::= [ * | anonymous | users | self | dn[.<dnstyle>]=<DN> ]\n"
2272                         "\t[ realanonymous | realusers | realself | realdn[.<dnstyle>]=<DN> ]\n"
2273                         "\t[dnattr=<attrname>]\n"
2274                         "\t[realdnattr=<attrname>]\n"
2275                         "\t[group[/<objectclass>[/<attrname>]][.<style>]=<group>]\n"
2276                         "\t[peername[.<peernamestyle>]=<peer>] [sockname[.<style>]=<name>]\n"
2277                         "\t[domain[.<domainstyle>]=<domain>] [sockurl[.<style>]=<url>]\n"
2278 #ifdef SLAP_DYNACL
2279                         "\t[dynacl/<name>[/<options>][.<dynstyle>][=<pattern>]]\n"
2280 #else /* ! SLAP_DYNACL */
2281 #ifdef SLAPD_ACI_ENABLED
2282                         "\t[aci[=<attrname>]]\n"
2283 #endif /* SLAPD_ACI_ENABLED */
2284 #endif /* ! SLAP_DYNACL */
2285                         "\t[ssf=<n>] [transport_ssf=<n>] [tls_ssf=<n>] [sasl_ssf=<n>]\n"
2286                 "<style> ::= exact | regex | base(Object)\n"
2287                 "<dnstyle> ::= base(Object) | one(level) | sub(tree) | children | "
2288                         "exact | regex\n"
2289                 "<attrstyle> ::= exact | regex | base(Object) | one(level) | "
2290                         "sub(tree) | children\n"
2291                 "<peernamestyle> ::= exact | regex | ip | path\n"
2292                 "<domainstyle> ::= exact | regex | base(Object) | sub(tree)\n"
2293                 "<access> ::= [[real]self]{<level>|<priv>}\n"
2294                 "<level> ::= none|disclose|auth|compare|search|read|{write|add|delete}|manage\n"
2295                 "<priv> ::= {=|+|-}{0|d|x|c|s|r|{w|a|z}|m}+\n"
2296                 "<control> ::= [ stop | continue | break ]\n"
2297 #ifdef SLAP_DYNACL
2298 #ifdef SLAPD_ACI_ENABLED
2299                 "dynacl:\n"
2300                 "\t<name>=ACI\t<pattern>=<attrname>\n"
2301 #endif /* SLAPD_ACI_ENABLED */
2302 #endif /* ! SLAP_DYNACL */
2303                 "";
2304
2305         Debug( LDAP_DEBUG_ANY, "%s%s%s\n", access, what, who );
2306
2307         return 1;
2308 }
2309
2310 /*
2311  * Set pattern to a "normalized" DN from src.
2312  * At present it simply eats the (optional) space after
2313  * a RDN separator (,)
2314  * Eventually will evolve in a more complete normalization
2315  */
2316 static void
2317 acl_regex_normalized_dn(
2318         const char *src,
2319         struct berval *pattern )
2320 {
2321         char *str, *p;
2322         ber_len_t len;
2323
2324         str = ch_strdup( src );
2325         len = strlen( src );
2326
2327         for ( p = str; p && p[0]; p++ ) {
2328                 /* escape */
2329                 if ( p[0] == '\\' && p[1] ) {
2330                         /*
2331                          * if escaping a hex pair we should
2332                          * increment p twice; however, in that
2333                          * case the second hex number does
2334                          * no harm
2335                          */
2336                         p++;
2337                 }
2338
2339                 if ( p[0] == ',' && p[1] == ' ' ) {
2340                         char *q;
2341
2342                         /*
2343                          * too much space should be an error if we are pedantic
2344                          */
2345                         for ( q = &p[2]; q[0] == ' '; q++ ) {
2346                                 /* DO NOTHING */ ;
2347                         }
2348                         AC_MEMCPY( p+1, q, len-(q-str)+1);
2349                 }
2350         }
2351         pattern->bv_val = str;
2352         pattern->bv_len = p - str;
2353
2354         return;
2355 }
2356
2357 static void
2358 split(
2359     char        *line,
2360     int         splitchar,
2361     char        **left,
2362     char        **right )
2363 {
2364         *left = line;
2365         if ( (*right = strchr( line, splitchar )) != NULL ) {
2366                 *((*right)++) = '\0';
2367         }
2368 }
2369
2370 static void
2371 access_append( Access **l, Access *a )
2372 {
2373         for ( ; *l != NULL; l = &(*l)->a_next ) {
2374                 ;       /* Empty */
2375         }
2376
2377         *l = a;
2378 }
2379
2380 void
2381 acl_append( AccessControl **l, AccessControl *a, int pos )
2382 {
2383         int i;
2384
2385         for (i=0 ; i != pos && *l != NULL; l = &(*l)->acl_next, i++ ) {
2386                 ;       /* Empty */
2387         }
2388         if ( *l && a )
2389                 a->acl_next = *l;
2390         *l = a;
2391 }
2392
2393 static void
2394 access_free( Access *a )
2395 {
2396         if ( !BER_BVISNULL( &a->a_dn_pat ) ) {
2397                 free( a->a_dn_pat.bv_val );
2398         }
2399         if ( !BER_BVISNULL( &a->a_realdn_pat ) ) {
2400                 free( a->a_realdn_pat.bv_val );
2401         }
2402         if ( !BER_BVISNULL( &a->a_peername_pat ) ) {
2403                 free( a->a_peername_pat.bv_val );
2404         }
2405         if ( !BER_BVISNULL( &a->a_sockname_pat ) ) {
2406                 free( a->a_sockname_pat.bv_val );
2407         }
2408         if ( !BER_BVISNULL( &a->a_domain_pat ) ) {
2409                 free( a->a_domain_pat.bv_val );
2410         }
2411         if ( !BER_BVISNULL( &a->a_sockurl_pat ) ) {
2412                 free( a->a_sockurl_pat.bv_val );
2413         }
2414         if ( !BER_BVISNULL( &a->a_set_pat ) ) {
2415                 free( a->a_set_pat.bv_val );
2416         }
2417         if ( !BER_BVISNULL( &a->a_group_pat ) ) {
2418                 free( a->a_group_pat.bv_val );
2419         }
2420 #ifdef SLAP_DYNACL
2421         if ( a->a_dynacl != NULL ) {
2422                 slap_dynacl_t   *da;
2423                 for ( da = a->a_dynacl; da; ) {
2424                         slap_dynacl_t   *tmp = da;
2425
2426                         da = da->da_next;
2427
2428                         if ( tmp->da_destroy ) {
2429                                 tmp->da_destroy( tmp->da_private );
2430                         }
2431
2432                         ch_free( tmp );
2433                 }
2434         }
2435 #endif /* SLAP_DYNACL */
2436         free( a );
2437 }
2438
2439 void
2440 acl_free( AccessControl *a )
2441 {
2442         Access *n;
2443         AttributeName *an;
2444
2445         if ( a->acl_filter ) {
2446                 filter_free( a->acl_filter );
2447         }
2448         if ( !BER_BVISNULL( &a->acl_dn_pat ) ) {
2449                 if ( a->acl_dn_style == ACL_STYLE_REGEX ) {
2450                         regfree( &a->acl_dn_re );
2451                 }
2452                 free ( a->acl_dn_pat.bv_val );
2453         }
2454         if ( a->acl_attrs ) {
2455                 for ( an = a->acl_attrs; !BER_BVISNULL( &an->an_name ); an++ ) {
2456                         free( an->an_name.bv_val );
2457                 }
2458                 free( a->acl_attrs );
2459         }
2460         for ( ; a->acl_access; a->acl_access = n ) {
2461                 n = a->acl_access->a_next;
2462                 access_free( a->acl_access );
2463         }
2464         free( a );
2465 }
2466
2467 /* Because backend_startup uses acl_append to tack on the global_acl to
2468  * the end of each backend's acl, we cannot just take one argument and
2469  * merrily free our way to the end of the list. backend_destroy calls us
2470  * with the be_acl in arg1, and global_acl in arg2 to give us a stopping
2471  * point. config_destroy calls us with global_acl in arg1 and NULL in
2472  * arg2, so we then proceed to polish off the global_acl.
2473  */
2474 void
2475 acl_destroy( AccessControl *a, AccessControl *end )
2476 {
2477         AccessControl *n;
2478
2479         for ( ; a && a != end; a = n ) {
2480                 n = a->acl_next;
2481                 acl_free( a );
2482         }
2483 }
2484
2485 char *
2486 access2str( slap_access_t access )
2487 {
2488         if ( access == ACL_NONE ) {
2489                 return "none";
2490
2491         } else if ( access == ACL_DISCLOSE ) {
2492                 return "disclose";
2493
2494         } else if ( access == ACL_AUTH ) {
2495                 return "auth";
2496
2497         } else if ( access == ACL_COMPARE ) {
2498                 return "compare";
2499
2500         } else if ( access == ACL_SEARCH ) {
2501                 return "search";
2502
2503         } else if ( access == ACL_READ ) {
2504                 return "read";
2505
2506         } else if ( access == ACL_WRITE ) {
2507                 return "write";
2508
2509         } else if ( access == ACL_WADD ) {
2510                 return "add";
2511
2512         } else if ( access == ACL_WDEL ) {
2513                 return "delete";
2514
2515         } else if ( access == ACL_MANAGE ) {
2516                 return "manage";
2517
2518         }
2519
2520         return "unknown";
2521 }
2522
2523 slap_access_t
2524 str2access( const char *str )
2525 {
2526         if ( strcasecmp( str, "none" ) == 0 ) {
2527                 return ACL_NONE;
2528
2529         } else if ( strcasecmp( str, "disclose" ) == 0 ) {
2530 #ifndef SLAP_ACL_HONOR_DISCLOSE
2531                 Debug( LDAP_DEBUG_ACL, "str2access: warning, "
2532                         "\"disclose\" privilege disabled.\n",
2533                 0, 0, 0 );
2534 #endif /* SLAP_ACL_HONOR_DISCLOSE */
2535                 return ACL_DISCLOSE;
2536
2537         } else if ( strcasecmp( str, "auth" ) == 0 ) {
2538                 return ACL_AUTH;
2539
2540         } else if ( strcasecmp( str, "compare" ) == 0 ) {
2541                 return ACL_COMPARE;
2542
2543         } else if ( strcasecmp( str, "search" ) == 0 ) {
2544                 return ACL_SEARCH;
2545
2546         } else if ( strcasecmp( str, "read" ) == 0 ) {
2547                 return ACL_READ;
2548
2549         } else if ( strcasecmp( str, "write" ) == 0 ) {
2550                 return ACL_WRITE;
2551
2552         } else if ( strcasecmp( str, "add" ) == 0 ) {
2553                 return ACL_WADD;
2554
2555         } else if ( strcasecmp( str, "delete" ) == 0 ) {
2556                 return ACL_WDEL;
2557
2558         } else if ( strcasecmp( str, "manage" ) == 0 ) {
2559                 return ACL_MANAGE;
2560         }
2561
2562         return( ACL_INVALID_ACCESS );
2563 }
2564
2565 #define ACLBUF_MAXLEN   8192
2566
2567 static char aclbuf[ACLBUF_MAXLEN];
2568
2569 static char *
2570 dnaccess2text( slap_dn_access *bdn, char *ptr, int is_realdn )
2571 {
2572         *ptr++ = ' ';
2573
2574         if ( is_realdn ) {
2575                 ptr = lutil_strcopy( ptr, "real" );
2576         }
2577
2578         if ( ber_bvccmp( &bdn->a_pat, '*' ) ||
2579                 bdn->a_style == ACL_STYLE_ANONYMOUS ||
2580                 bdn->a_style == ACL_STYLE_USERS ||
2581                 bdn->a_style == ACL_STYLE_SELF )
2582         {
2583                 if ( is_realdn ) {
2584                         assert( ! ber_bvccmp( &bdn->a_pat, '*' ) );
2585                 }
2586
2587                 ptr = lutil_strcopy( ptr, bdn->a_pat.bv_val );
2588                 if ( bdn->a_style == ACL_STYLE_SELF && bdn->a_self_level != 0 ) {
2589                         int n = sprintf( ptr, ".level{%d}", bdn->a_self_level );
2590                         if ( n > 0 ) {
2591                                 ptr += n;
2592                         } /* else ? */
2593                 }
2594
2595         } else {
2596                 ptr = lutil_strcopy( ptr, "dn." );
2597                 if ( bdn->a_style == ACL_STYLE_BASE )
2598                         ptr = lutil_strcopy( ptr, style_base );
2599                 else
2600                         ptr = lutil_strcopy( ptr, style_strings[bdn->a_style] );
2601                 if ( bdn->a_style == ACL_STYLE_LEVEL ) {
2602                         int n = sprintf( ptr, "{%d}", bdn->a_level );
2603                         if ( n > 0 ) {
2604                                 ptr += n;
2605                         } /* else ? */
2606                 }
2607                 if ( bdn->a_expand ) {
2608                         ptr = lutil_strcopy( ptr, ",expand" );
2609                 }
2610                 *ptr++ = '=';
2611                 *ptr++ = '"';
2612                 ptr = lutil_strcopy( ptr, bdn->a_pat.bv_val );
2613                 *ptr++ = '"';
2614         }
2615         return ptr;
2616 }
2617
2618 static char *
2619 access2text( Access *b, char *ptr )
2620 {
2621         char maskbuf[ACCESSMASK_MAXLEN];
2622
2623         ptr = lutil_strcopy( ptr, "\tby" );
2624
2625         if ( !BER_BVISEMPTY( &b->a_dn_pat ) ) {
2626                 ptr = dnaccess2text( &b->a_dn, ptr, 0 );
2627         }
2628         if ( b->a_dn_at ) {
2629                 ptr = lutil_strcopy( ptr, " dnattr=" );
2630                 ptr = lutil_strcopy( ptr, b->a_dn_at->ad_cname.bv_val );
2631         }
2632
2633         if ( !BER_BVISEMPTY( &b->a_realdn_pat ) ) {
2634                 ptr = dnaccess2text( &b->a_realdn, ptr, 1 );
2635         }
2636         if ( b->a_realdn_at ) {
2637                 ptr = lutil_strcopy( ptr, " realdnattr=" );
2638                 ptr = lutil_strcopy( ptr, b->a_realdn_at->ad_cname.bv_val );
2639         }
2640
2641         if ( !BER_BVISEMPTY( &b->a_group_pat ) ) {
2642                 ptr = lutil_strcopy( ptr, " group/" );
2643                 ptr = lutil_strcopy( ptr, b->a_group_oc ?
2644                         b->a_group_oc->soc_cname.bv_val : SLAPD_GROUP_CLASS );
2645                 *ptr++ = '/';
2646                 ptr = lutil_strcopy( ptr, b->a_group_at ?
2647                         b->a_group_at->ad_cname.bv_val : SLAPD_GROUP_ATTR );
2648                 *ptr++ = '.';
2649                 ptr = lutil_strcopy( ptr, style_strings[b->a_group_style] );
2650                 *ptr++ = '=';
2651                 *ptr++ = '"';
2652                 ptr = lutil_strcopy( ptr, b->a_group_pat.bv_val );
2653                 *ptr++ = '"';
2654         }
2655
2656         if ( !BER_BVISEMPTY( &b->a_peername_pat ) ) {
2657                 ptr = lutil_strcopy( ptr, " peername" );
2658                 *ptr++ = '.';
2659                 ptr = lutil_strcopy( ptr, style_strings[b->a_peername_style] );
2660                 *ptr++ = '=';
2661                 *ptr++ = '"';
2662                 ptr = lutil_strcopy( ptr, b->a_peername_pat.bv_val );
2663                 *ptr++ = '"';
2664         }
2665
2666         if ( !BER_BVISEMPTY( &b->a_sockname_pat ) ) {
2667                 ptr = lutil_strcopy( ptr, " sockname" );
2668                 *ptr++ = '.';
2669                 ptr = lutil_strcopy( ptr, style_strings[b->a_sockname_style] );
2670                 *ptr++ = '=';
2671                 *ptr++ = '"';
2672                 ptr = lutil_strcopy( ptr, b->a_sockname_pat.bv_val );
2673                 *ptr++ = '"';
2674         }
2675
2676         if ( !BER_BVISEMPTY( &b->a_domain_pat ) ) {
2677                 ptr = lutil_strcopy( ptr, " domain" );
2678                 *ptr++ = '.';
2679                 ptr = lutil_strcopy( ptr, style_strings[b->a_domain_style] );
2680                 if ( b->a_domain_expand ) {
2681                         ptr = lutil_strcopy( ptr, ",expand" );
2682                 }
2683                 *ptr++ = '=';
2684                 ptr = lutil_strcopy( ptr, b->a_domain_pat.bv_val );
2685         }
2686
2687         if ( !BER_BVISEMPTY( &b->a_sockurl_pat ) ) {
2688                 ptr = lutil_strcopy( ptr, " sockurl" );
2689                 *ptr++ = '.';
2690                 ptr = lutil_strcopy( ptr, style_strings[b->a_sockurl_style] );
2691                 *ptr++ = '=';
2692                 *ptr++ = '"';
2693                 ptr = lutil_strcopy( ptr, b->a_sockurl_pat.bv_val );
2694                 *ptr++ = '"';
2695         }
2696
2697         if ( !BER_BVISEMPTY( &b->a_set_pat ) ) {
2698                 ptr = lutil_strcopy( ptr, " set" );
2699                 *ptr++ = '.';
2700                 ptr = lutil_strcopy( ptr, style_strings[b->a_set_style] );
2701                 *ptr++ = '=';
2702                 *ptr++ = '"';
2703                 ptr = lutil_strcopy( ptr, b->a_set_pat.bv_val );
2704                 *ptr++ = '"';
2705         }
2706
2707 #ifdef SLAP_DYNACL
2708         if ( b->a_dynacl ) {
2709                 slap_dynacl_t   *da;
2710
2711                 for ( da = b->a_dynacl; da; da = da->da_next ) {
2712                         if ( da->da_unparse ) {
2713                                 struct berval bv = BER_BVNULL;
2714                                 (void)( *da->da_unparse )( da->da_private, &bv );
2715                                 assert( !BER_BVISNULL( &bv ) );
2716                                 ptr = lutil_strcopy( ptr, bv.bv_val );
2717                                 ch_free( bv.bv_val );
2718                         }
2719                 }
2720         }
2721 #else /* ! SLAP_DYNACL */
2722 #ifdef SLAPD_ACI_ENABLED
2723         if ( b->a_aci_at != NULL ) {
2724                 ptr = lutil_strcopy( ptr, " aci=" );
2725                 ptr = lutil_strcopy( ptr, b->a_aci_at->ad_cname.bv_val );
2726         }
2727 #endif
2728 #endif /* SLAP_DYNACL */
2729
2730         /* Security Strength Factors */
2731         if ( b->a_authz.sai_ssf ) {
2732                 ptr += sprintf( ptr, " ssf=%u",
2733                         b->a_authz.sai_ssf );
2734         }
2735         if ( b->a_authz.sai_transport_ssf ) {
2736                 ptr += sprintf( ptr, " transport_ssf=%u",
2737                         b->a_authz.sai_transport_ssf );
2738         }
2739         if ( b->a_authz.sai_tls_ssf ) {
2740                 ptr += sprintf( ptr, " tls_ssf=%u",
2741                         b->a_authz.sai_tls_ssf );
2742         }
2743         if ( b->a_authz.sai_sasl_ssf ) {
2744                 ptr += sprintf( ptr, " sasl_ssf=%u",
2745                         b->a_authz.sai_sasl_ssf );
2746         }
2747
2748         *ptr++ = ' ';
2749         if ( b->a_dn_self ) {
2750                 ptr = lutil_strcopy( ptr, "self" );
2751         } else if ( b->a_realdn_self ) {
2752                 ptr = lutil_strcopy( ptr, "realself" );
2753         }
2754         ptr = lutil_strcopy( ptr, accessmask2str( b->a_access_mask, maskbuf, 0 ));
2755         if ( !maskbuf[0] ) ptr--;
2756
2757         if( b->a_type == ACL_BREAK ) {
2758                 ptr = lutil_strcopy( ptr, " break" );
2759
2760         } else if( b->a_type == ACL_CONTINUE ) {
2761                 ptr = lutil_strcopy( ptr, " continue" );
2762
2763         } else if( b->a_type != ACL_STOP ) {
2764                 ptr = lutil_strcopy( ptr, " unknown-control" );
2765         } else {
2766                 if ( !maskbuf[0] ) ptr = lutil_strcopy( ptr, " stop" );
2767         }
2768         *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         bv->bv_val = aclbuf;
2781         bv->bv_len = 0;
2782
2783         ptr = bv->bv_val;
2784
2785         ptr = lutil_strcopy( ptr, "to" );
2786         if ( !BER_BVISNULL( &a->acl_dn_pat ) ) {
2787                 to++;
2788                 ptr = lutil_strcopy( ptr, " dn." );
2789                 if ( a->acl_dn_style == ACL_STYLE_BASE )
2790                         ptr = lutil_strcopy( ptr, style_base );
2791                 else
2792                         ptr = lutil_strcopy( ptr, style_strings[a->acl_dn_style] );
2793                 *ptr++ = '=';
2794                 *ptr++ = '"';
2795                 ptr = lutil_strcopy( ptr, a->acl_dn_pat.bv_val );
2796                 ptr = lutil_strcopy( ptr, "\"\n" );
2797         }
2798
2799         if ( a->acl_filter != NULL ) {
2800                 struct berval   bv = BER_BVNULL;
2801
2802                 to++;
2803                 filter2bv( a->acl_filter, &bv );
2804                 ptr = lutil_strcopy( ptr, " filter=\"" );
2805                 ptr = lutil_strcopy( ptr, bv.bv_val );
2806                 *ptr++ = '"';
2807                 *ptr++ = '\n';
2808                 ch_free( bv.bv_val );
2809         }
2810
2811         if ( a->acl_attrs != NULL ) {
2812                 int     first = 1;
2813                 AttributeName *an;
2814                 to++;
2815
2816                 ptr = lutil_strcopy( ptr, " attrs=" );
2817                 for ( an = a->acl_attrs; an && !BER_BVISNULL( &an->an_name ); an++ ) {
2818                         if ( ! first ) *ptr++ = ',';
2819                         if (an->an_oc) {
2820                                 *ptr++ = an->an_oc_exclude ? '!' : '@';
2821                                 ptr = lutil_strcopy( ptr, an->an_oc->soc_cname.bv_val );
2822
2823                         } else {
2824                                 ptr = lutil_strcopy( ptr, an->an_name.bv_val );
2825                         }
2826                         first = 0;
2827                 }
2828                 *ptr++ = '\n';
2829         }
2830
2831         if ( !BER_BVISEMPTY( &a->acl_attrval ) ) {
2832                 to++;
2833                 ptr = lutil_strcopy( ptr, " val." );
2834                 if ( a->acl_attrval_style == ACL_STYLE_BASE &&
2835                         a->acl_attrs[0].an_desc->ad_type->sat_syntax ==
2836                                 slap_schema.si_syn_distinguishedName )
2837                         ptr = lutil_strcopy( ptr, style_base );
2838                 else
2839                         ptr = lutil_strcopy( ptr, style_strings[a->acl_attrval_style] );
2840                 *ptr++ = '=';
2841                 *ptr++ = '"';
2842                 ptr = lutil_strcopy( ptr, a->acl_attrval.bv_val );
2843                 *ptr++ = '"';
2844                 *ptr++ = '\n';
2845         }
2846
2847         if( !to ) {
2848                 ptr = lutil_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_len = ptr - bv->bv_val;
2856 }
2857
2858 #ifdef LDAP_DEBUG
2859 static void
2860 print_acl( Backend *be, AccessControl *a )
2861 {
2862         struct berval bv;
2863
2864         acl_unparse( a, &bv );
2865         fprintf( stderr, "%s ACL: access %s\n",
2866                 be == NULL ? "Global" : "Backend", bv.bv_val );
2867 }
2868 #endif /* LDAP_DEBUG */