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

   1 /* aclparse.c - routines to parse and check acl's */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
   5  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   6  */
   7
   8 #include "portable.h"
   9
  10 #include <stdio.h>
  11
  12 #include <ac/ctype.h>
  13 #include <ac/regex.h>
  14 #include <ac/socket.h>
  15 #include <ac/string.h>
  16 #include <ac/unistd.h>
  17
  18 #include "slap.h"
  19 #include "lber_pvt.h"
  20
  21 static void             split(char *line, int splitchar, char **left, char **right);
  22 static void             access_append(Access **l, Access *a);
  23 static void             acl_usage(void) LDAP_GCCATTR((noreturn));
  24
  25 static void             acl_regex_normalized_dn(struct berval *pattern);
  26
  27 #ifdef LDAP_DEBUG
  28 static void             print_acl(Backend *be, AccessControl *a);
  29 static void             print_access(Access *b);
  30 #endif
  31
  32 static int
  33 regtest(const char *fname, int lineno, char *pat) {
  34         int e;
  35         regex_t re;
  36
  37         char buf[512];
  38         unsigned size;
  39
  40         char *sp;
  41         char *dp;
  42         int  flag;
  43
  44         sp = pat;
  45         dp = buf;
  46         size = 0;
  47         buf[0] = '\0';
  48
  49         for (size = 0, flag = 0; (size < sizeof(buf)) && *sp; sp++) {
  50                 if (flag) {
  51                         if (*sp == '$'|| (*sp >= '0' && *sp <= '9')) {
  52                                 *dp++ = *sp;
  53                                 size++;
  54                         }
  55                         flag = 0;
  56
  57                 } else {
  58                         if (*sp == '$') {
  59                                 flag = 1;
  60                         } else {
  61                                 *dp++ = *sp;
  62                                 size++;
  63                         }
  64                 }
  65         }
  66
  67         *dp = '\0';
  68         if ( size >= (sizeof(buf)-1) ) {
  69                 fprintf( stderr,
  70                         "%s: line %d: regular expression \"%s\" too large\n",
  71                         fname, lineno, pat );
  72                 acl_usage();
  73         }
  74
  75         if ((e = regcomp(&re, buf, REG_EXTENDED|REG_ICASE))) {
  76                 char error[512];
  77                 regerror(e, &re, error, sizeof(error));
  78                 fprintf( stderr,
  79                         "%s: line %d: regular expression \"%s\" bad because of %s\n",
  80                         fname, lineno, pat, error );
  81                 acl_usage();
  82                 return(0);
  83         }
  84         regfree(&re);
  85         return(1);
  86 }
  87
  88 void
  89 parse_acl(
  90     Backend     *be,
  91     const char  *fname,
  92     int         lineno,
  93     int         argc,
  94     char        **argv
  95 )
  96 {
  97         int             i;
  98         char            *left, *right, *style;
  99         struct berval   bv;
 100         AccessControl   *a;
 101         Access  *b;
 102         int rc;
 103         const char *text;
 104
 105         a = NULL;
 106         for ( i = 1; i < argc; i++ ) {
 107                 /* to clause - select which entries are protected */
 108                 if ( strcasecmp( argv[i], "to" ) == 0 ) {
 109                         if ( a != NULL ) {
 110                                 fprintf( stderr,
 111                 "%s: line %d: only one to clause allowed in access line\n",
 112                                     fname, lineno );
 113                                 acl_usage();
 114                         }
 115                         a = (AccessControl *) ch_calloc( 1, sizeof(AccessControl) );
 116                         for ( ++i; i < argc; i++ ) {
 117                                 if ( strcasecmp( argv[i], "by" ) == 0 ) {
 118                                         i--;
 119                                         break;
 120                                 }
 121
 122                                 if ( strcasecmp( argv[i], "*" ) == 0 ) {
 123                                         if( a->acl_dn_pat.bv_len != 0 ) {
 124                                                 fprintf( stderr,
 125                                                         "%s: line %d: dn pattern"
 126                                                         " already specified in to clause.\n",
 127                                                         fname, lineno );
 128                                                 acl_usage();
 129                                         }
 130
 131                                         a->acl_dn_pat.bv_val = ch_strdup( "*" );
 132                                         a->acl_dn_pat.bv_len = 1;
 133                                         continue;
 134                                 }
 135
 136                                 split( argv[i], '=', &left, &right );
 137                                 split( left, '.', &left, &style );
 138
 139                                 if ( right == NULL ) {
 140                                         fprintf( stderr,
 141         "%s: line %d: missing \"=\" in \"%s\" in to clause\n",
 142                                             fname, lineno, left );
 143                                         acl_usage();
 144                                 }
 145
 146                                 if ( strcasecmp( left, "dn" ) == 0 ) {
 147                                         if( a->acl_dn_pat.bv_len != 0 ) {
 148                                                 fprintf( stderr,
 149                                                         "%s: line %d: dn pattern"
 150                                                         " already specified in to clause.\n",
 151                                                         fname, lineno );
 152                                                 acl_usage();
 153                                         }
 154
 155                                         if ( style == NULL || *style == '\0'
 156                                                 || strcasecmp( style, "regex" ) == 0 )
 157                                         {
 158                                                 a->acl_dn_style = ACL_STYLE_REGEX;
 159
 160                                                 if ( *right == '\0' ) {
 161                                                         /* empty regex should match empty DN */
 162                                                         a->acl_dn_style = ACL_STYLE_BASE;
 163                                                         ber_str2bv( right, 0, 1, &a->acl_dn_pat );
 164
 165                                                 } else if ( strcmp(right, "*") == 0
 166                                                         || strcmp(right, ".*") == 0
 167                                                         || strcmp(right, ".*$") == 0
 168                                                         || strcmp(right, "^.*") == 0
 169                                                         || strcmp(right, "^.*$$") == 0
 170                                                         || strcmp(right, ".*$$") == 0
 171                                                         || strcmp(right, "^.*$$") == 0 )
 172                                                 {
 173                                                         a->acl_dn_pat.bv_val = ch_strdup( "*" );
 174                                                         a->acl_dn_pat.bv_len = sizeof("*")-1;
 175
 176                                                 } else {
 177                                                         a->acl_dn_pat.bv_val = right;
 178                                                         acl_regex_normalized_dn( &a->acl_dn_pat );
 179                                                 }
 180                                         } else if ( strcasecmp( style, "base" ) == 0 ) {
 181                                                 a->acl_dn_style = ACL_STYLE_BASE;
 182                                                 ber_str2bv( right, 0, 1, &a->acl_dn_pat );
 183                                         } else if ( strcasecmp( style, "one" ) == 0 ) {
 184                                                 a->acl_dn_style = ACL_STYLE_ONE;
 185                                                 ber_str2bv( right, 0, 1, &a->acl_dn_pat );
 186                                         } else if ( strcasecmp( style, "subtree" ) == 0 ) {
 187                                                 a->acl_dn_style = ACL_STYLE_SUBTREE;
 188                                                 ber_str2bv( right, 0, 1, &a->acl_dn_pat );
 189                                         } else if ( strcasecmp( style, "children" ) == 0 ) {
 190                                                 a->acl_dn_style = ACL_STYLE_CHILDREN;
 191                                                 ber_str2bv( right, 0, 1, &a->acl_dn_pat );
 192                                         } else {
 193                                                 fprintf( stderr,
 194         "%s: line %d: unknown dn style \"%s\" in to clause\n",
 195                                                     fname, lineno, style );
 196                                                 acl_usage();
 197                                         }
 198
 199                                         continue;
 200                                 }
 201
 202                                 if ( strcasecmp( left, "filter" ) == 0 ) {
 203                                         if ( (a->acl_filter = str2filter(
 204                                             right )) == NULL ) {
 205                                                 fprintf( stderr,
 206                                 "%s: line %d: bad filter \"%s\" in to clause\n",
 207                                                     fname, lineno, right );
 208                                                 acl_usage();
 209                                         }
 210
 211                                 } else if ( strncasecmp( left, "attr", 4 ) == 0 ) {
 212                                         a->acl_attrs = str2anlist( a->acl_attrs,
 213                                                 right, "," );
 214                                         if ( a->acl_attrs == NULL ) {
 215                                                 fprintf( stderr,
 216                                 "%s: line %d: unknown attr \"%s\" in to clause\n",
 217                                                     fname, lineno, right );
 218                                                 acl_usage();
 219                                         }
 220                                 } else {
 221                                         fprintf( stderr,
 222                                                 "%s: line %d: expecting <what> got \"%s\"\n",
 223                                             fname, lineno, left );
 224                                         acl_usage();
 225                                 }
 226                         }
 227
 228                         if ( a->acl_dn_pat.bv_len != 0 &&
 229                                 strcmp(a->acl_dn_pat.bv_val, "*") == 0)
 230                         {
 231                                 free( a->acl_dn_pat.bv_val );
 232                                 a->acl_dn_pat.bv_val = NULL;
 233                                 a->acl_dn_pat.bv_len = 0;
 234                         }
 235
 236                         if( a->acl_dn_pat.bv_len != 0 ) {
 237                                 if ( a->acl_dn_style != ACL_STYLE_REGEX ) {
 238                                         struct berval bv;
 239                                         dnNormalize2( NULL, &a->acl_dn_pat, &bv);
 240                                         free( a->acl_dn_pat.bv_val );
 241                                         a->acl_dn_pat = bv;
 242                                 } else {
 243                                         int e = regcomp( &a->acl_dn_re, a->acl_dn_pat.bv_val,
 244                                                 REG_EXTENDED | REG_ICASE );
 245                                         if ( e ) {
 246                                                 char buf[512];
 247                                                 regerror( e, &a->acl_dn_re, buf, sizeof(buf) );
 248                                                 fprintf( stderr, "%s: line %d: "
 249                                                         "regular expression \"%s\" bad because of %s\n",
 250                                                         fname, lineno, right, buf );
 251                                                 acl_usage();
 252                                         }
 253                                 }
 254                         }
 255
 256                 /* by clause - select who has what access to entries */
 257                 } else if ( strcasecmp( argv[i], "by" ) == 0 ) {
 258                         if ( a == NULL ) {
 259                                 fprintf( stderr,
 260                                         "%s: line %d: to clause required before by clause in access line\n",
 261                                     fname, lineno );
 262                                 acl_usage();
 263                         }
 264
 265                         /*
 266                          * by clause consists of <who> and <access>
 267                          */
 268
 269                         b = (Access *) ch_calloc( 1, sizeof(Access) );
 270
 271                         ACL_INVALIDATE( b->a_access_mask );
 272
 273                         if ( ++i == argc ) {
 274                                 fprintf( stderr,
 275                             "%s: line %d: premature eol: expecting <who>\n",
 276                                     fname, lineno );
 277                                 acl_usage();
 278                         }
 279
 280                         /* get <who> */
 281                         for ( ; i < argc; i++ ) {
 282                                 slap_style_t sty = ACL_STYLE_REGEX;
 283                                 char *style_modifier = NULL;
 284                                 int expand = 0;
 285
 286                                 split( argv[i], '=', &left, &right );
 287                                 split( left, '.', &left, &style );
 288                                 if ( style ) {
 289                                         split( style, ',', &style, &style_modifier);
 290                                 }
 291                                 if ( style == NULL || *style == '\0'
 292                                         || strcasecmp( style, "regex" ) == 0 )
 293                                 {
 294                                         sty = ACL_STYLE_REGEX;
 295                                 } else if ( strcasecmp( style, "exact" ) == 0 ) {
 296                                         sty = ACL_STYLE_EXACT;
 297                                 } else if ( strcasecmp( style, "base" ) == 0 ) {
 298                                         sty = ACL_STYLE_BASE;
 299                                 } else if ( strcasecmp( style, "one" ) == 0 ) {
 300                                         sty = ACL_STYLE_ONE;
 301                                 } else if ( strcasecmp( style, "subtree" ) == 0 ) {
 302                                         sty = ACL_STYLE_SUBTREE;
 303                                 } else if ( strcasecmp( style, "children" ) == 0 ) {
 304                                         sty = ACL_STYLE_CHILDREN;
 305                                 } else {
 306                                         fprintf( stderr,
 307                                                 "%s: line %d: unknown style \"%s\" in by clause\n",
 308                                             fname, lineno, style );
 309                                         acl_usage();
 310                                 }
 311
 312                                 if ( style_modifier && strcasecmp( style_modifier, "expand" ) == 0 ) {
 313                                         expand = 1;
 314                                 }
 315
 316                                 if ( strcasecmp( argv[i], "*" ) == 0 ) {
 317                                         bv.bv_val = ch_strdup( "*" );
 318                                         bv.bv_len = 1;
 319
 320                                 } else if ( strcasecmp( argv[i], "anonymous" ) == 0 ) {
 321                                         ber_str2bv("anonymous",
 322                                                 sizeof("anonymous")-1,
 323                                                 1, &bv);
 324
 325                                 } else if ( strcasecmp( argv[i], "self" ) == 0 ) {
 326                                         ber_str2bv("self",
 327                                                 sizeof("self")-1,
 328                                                 1, &bv);
 329
 330                                 } else if ( strcasecmp( argv[i], "users" ) == 0 ) {
 331                                         ber_str2bv("users",
 332                                                 sizeof("users")-1,
 333                                                 1, &bv);
 334
 335                                 } else if ( strcasecmp( left, "dn" ) == 0 ) {
 336                                         if ( sty == ACL_STYLE_REGEX ) {
 337                                                 b->a_dn_style = ACL_STYLE_REGEX;
 338                                                 if( right == NULL ) {
 339                                                         /* no '=' */
 340                                                         ber_str2bv("users",
 341                                                                 sizeof("users")-1,
 342                                                                 1, &bv);
 343                                                 } else if (*right == '\0' ) {
 344                                                         /* dn="" */
 345                                                         ber_str2bv("anonymous",
 346                                                                 sizeof("anonymous")-1,
 347                                                                 1, &bv);
 348                                                 } else if ( strcmp( right, "*" ) == 0 ) {
 349                                                         /* dn=* */
 350                                                         /* any or users?  users for now */
 351                                                         ber_str2bv("users",
 352                                                                 sizeof("users")-1,
 353                                                                 1, &bv);
 354                                                 } else if ( strcmp( right, ".+" ) == 0
 355                                                         || strcmp( right, "^.+" ) == 0
 356                                                         || strcmp( right, ".+$" ) == 0
 357                                                         || strcmp( right, "^.+$" ) == 0
 358                                                         || strcmp( right, ".+$$" ) == 0
 359                                                         || strcmp( right, "^.+$$" ) == 0 )
 360                                                 {
 361                                                         ber_str2bv("users",
 362                                                                 sizeof("users")-1,
 363                                                                 1, &bv);
 364                                                 } else if ( strcmp( right, ".*" ) == 0
 365                                                         || strcmp( right, "^.*" ) == 0
 366                                                         || strcmp( right, ".*$" ) == 0
 367                                                         || strcmp( right, "^.*$" ) == 0
 368                                                         || strcmp( right, ".*$$" ) == 0
 369                                                         || strcmp( right, "^.*$$" ) == 0 )
 370                                                 {
 371                                                         ber_str2bv("*",
 372                                                                 sizeof("*")-1,
 373                                                                 1, &bv);
 374
 375                                                 } else {
 376                                                         bv.bv_val = right;
 377                                                         acl_regex_normalized_dn( &bv );
 378                                                         if ( !ber_bvccmp( &bv, '*' ) ) {
 379                                                                 regtest(fname, lineno, bv.bv_val);
 380                                                         }
 381                                                 }
 382                                         } else if ( right == NULL || *right == '\0' ) {
 383                                                 fprintf( stderr,
 384                                                         "%s: line %d: missing \"=\" in (or value after) \"%s\" in by clause\n",
 385                                                     fname, lineno, left );
 386                                                 acl_usage();
 387
 388                                         } else {
 389                                                 ber_str2bv( right, 0, 1, &bv );
 390                                         }
 391
 392                                 } else {
 393                                         bv.bv_val = NULL;
 394                                 }
 395
 396                                 if( bv.bv_val != NULL ) {
 397                                         if( b->a_dn_pat.bv_len != 0 ) {
 398                                                 fprintf( stderr,
 399                                                     "%s: line %d: dn pattern already specified.\n",
 400                                                     fname, lineno );
 401                                                 acl_usage();
 402                                         }
 403
 404                                         if ( sty != ACL_STYLE_REGEX && expand == 0 ) {
 405                                                 dnNormalize2(NULL, &bv, &b->a_dn_pat);
 406                                                 free(bv.bv_val);
 407                                         } else {
 408                                                 b->a_dn_pat = bv;
 409                                         }
 410                                         b->a_dn_style = sty;
 411                                         b->a_dn_expand = expand;
 412                                         continue;
 413                                 }
 414
 415                                 if ( strcasecmp( left, "dnattr" ) == 0 ) {
 416                                         if ( right == NULL || right[ 0 ] == '\0' ) {
 417                                                 fprintf( stderr,
 418                                                         "%s: line %d: missing \"=\" in (or value after) \"%s\" in by clause\n",
 419                                                         fname, lineno, left );
 420                                                 acl_usage();
 421                                         }
 422
 423                                         if( b->a_dn_at != NULL ) {
 424                                                 fprintf( stderr,
 425                                                         "%s: line %d: dnattr already specified.\n",
 426                                                         fname, lineno );
 427                                                 acl_usage();
 428                                         }
 429
 430                                         rc = slap_str2ad( right, &b->a_dn_at, &text );
 431
 432                                         if( rc != LDAP_SUCCESS ) {
 433                                                 fprintf( stderr,
 434                                                         "%s: line %d: dnattr \"%s\": %s\n",
 435                                                         fname, lineno, right, text );
 436                                                 acl_usage();
 437                                         }
 438
 439
 440                                         if( !is_at_syntax( b->a_dn_at->ad_type,
 441                                                 SLAPD_DN_SYNTAX ) &&
 442                                                 !is_at_syntax( b->a_dn_at->ad_type,
 443                                                 SLAPD_NAMEUID_SYNTAX ))
 444                                         {
 445                                                 fprintf( stderr,
 446                                                         "%s: line %d: dnattr \"%s\": "
 447                                                         "inappropriate syntax: %s\n",
 448                                                         fname, lineno, right,
 449                                                         b->a_dn_at->ad_type->sat_syntax_oid );
 450                                                 acl_usage();
 451                                         }
 452
 453                                         continue;
 454                                 }
 455
 456                                 if ( strncasecmp( left, "group", sizeof("group")-1 ) == 0 ) {
 457                                         char *name = NULL;
 458                                         char *value = NULL;
 459
 460                                         if (sty != ACL_STYLE_REGEX && sty != ACL_STYLE_BASE) {
 461                                                 fprintf( stderr,
 462                                                         "%s: line %d: inappropriate style \"%s\" in by clause\n",
 463                                                     fname, lineno, style );
 464                                                 acl_usage();
 465                                         }
 466
 467                                         if ( right == NULL || right[ 0 ] == '\0' ) {
 468                                                 fprintf( stderr,
 469                                                         "%s: line %d: missing \"=\" in (or value after) \"%s\" in by clause\n",
 470                                                         fname, lineno, left );
 471                                                 acl_usage();
 472                                         }
 473
 474                                         if( b->a_group_pat.bv_len ) {
 475                                                 fprintf( stderr,
 476                                                         "%s: line %d: group pattern already specified.\n",
 477                                                         fname, lineno );
 478                                                 acl_usage();
 479                                         }
 480
 481                                         /* format of string is "group/objectClassValue/groupAttrName" */
 482                                         if ((value = strchr(left, '/')) != NULL) {
 483                                                 *value++ = '\0';
 484                                                 if (*value
 485                                                         && (name = strchr(value, '/')) != NULL)
 486                                                 {
 487                                                         *name++ = '\0';
 488                                                 }
 489                                         }
 490
 491                                         b->a_group_style = sty;
 492                                         if (sty == ACL_STYLE_REGEX) {
 493                                                 bv.bv_val = right;
 494                                                 acl_regex_normalized_dn( &bv );
 495                                                 if ( !ber_bvccmp( &bv, '*' ) ) {
 496                                                         regtest(fname, lineno, bv.bv_val);
 497                                                 }
 498                                                 b->a_group_pat = bv;
 499                                         } else {
 500                                                 ber_str2bv( right, 0, 0, &bv );
 501                                                 dnNormalize2( NULL, &bv, &b->a_group_pat );
 502                                         }
 503
 504                                         if (value && *value) {
 505                                                 b->a_group_oc = oc_find( value );
 506                                                 *--value = '/';
 507
 508                                                 if( b->a_group_oc == NULL ) {
 509                                                         fprintf( stderr,
 510                                                                 "%s: line %d: group objectclass "
 511                                                                 "\"%s\" unknown\n",
 512                                                                 fname, lineno, value );
 513                                                         acl_usage();
 514                                                 }
 515                                         } else {
 516                                                 b->a_group_oc = oc_find(SLAPD_GROUP_CLASS);
 517
 518                                                 if( b->a_group_oc == NULL ) {
 519                                                         fprintf( stderr,
 520                                                                 "%s: line %d: group default objectclass "
 521                                                                 "\"%s\" unknown\n",
 522                                                                 fname, lineno, SLAPD_GROUP_CLASS );
 523                                                         acl_usage();
 524                                                 }
 525                                         }
 526
 527                                         if( is_object_subclass( slap_schema.si_oc_referral,
 528                                                 b->a_group_oc ))
 529                                         {
 530                                                 fprintf( stderr,
 531                                                         "%s: line %d: group objectclass \"%s\" "
 532                                                         "is subclass of referral\n",
 533                                                         fname, lineno, value );
 534                                                 acl_usage();
 535                                         }
 536
 537                                         if( is_object_subclass( slap_schema.si_oc_alias,
 538                                                 b->a_group_oc ))
 539                                         {
 540                                                 fprintf( stderr,
 541                                                         "%s: line %d: group objectclass \"%s\" "
 542                                                         "is subclass of alias\n",
 543                                                         fname, lineno, value );
 544                                                 acl_usage();
 545                                         }
 546
 547                                         if (name && *name) {
 548                                                 rc = slap_str2ad( name, &b->a_group_at, &text );
 549
 550                                                 if( rc != LDAP_SUCCESS ) {
 551                                                         fprintf( stderr,
 552                                                                 "%s: line %d: group \"%s\": %s\n",
 553                                                                 fname, lineno, right, text );
 554                                                         acl_usage();
 555                                                 }
 556                                                 *--name = '/';
 557                                         } else {
 558                                                 rc = slap_str2ad( SLAPD_GROUP_ATTR, &b->a_group_at, &text );
 559
 560                                                 if( rc != LDAP_SUCCESS ) {
 561                                                         fprintf( stderr,
 562                                                                 "%s: line %d: group \"%s\": %s\n",
 563                                                                 fname, lineno, SLAPD_GROUP_ATTR, text );
 564                                                         acl_usage();
 565                                                 }
 566                                         }
 567
 568                                         if( !is_at_syntax( b->a_group_at->ad_type,
 569                                                 SLAPD_DN_SYNTAX ) &&
 570                                             !is_at_syntax( b->a_group_at->ad_type,
 571                                                 SLAPD_NAMEUID_SYNTAX ) )
 572                                         {
 573                                                 fprintf( stderr,
 574                                                         "%s: line %d: group \"%s\": inappropriate syntax: %s\n",
 575                                                         fname, lineno, right,
 576                                                         b->a_group_at->ad_type->sat_syntax_oid );
 577                                                 acl_usage();
 578                                         }
 579
 580
 581                                         {
 582                                                 int rc;
 583                                                 struct berval vals[2];
 584
 585                                                 vals[0].bv_val = b->a_group_oc->soc_oid;
 586                                                 vals[0].bv_len = strlen(vals[0].bv_val);
 587                                                 vals[1].bv_val = NULL;
 588
 589
 590                                                 rc = oc_check_allowed( b->a_group_at->ad_type, vals, NULL );
 591
 592                                                 if( rc != 0 ) {
 593                                                         fprintf( stderr,
 594                                                                 "%s: line %d: group: \"%s\" not allowed by \"%s\"\n",
 595                                                                 fname, lineno,
 596                                                                 b->a_group_at->ad_cname.bv_val,
 597                                                                 b->a_group_oc->soc_oid );
 598                                                         acl_usage();
 599                                                 }
 600                                         }
 601                                         continue;
 602                                 }
 603
 604                                 if ( strcasecmp( left, "peername" ) == 0 ) {
 605                                         if (sty != ACL_STYLE_REGEX && sty != ACL_STYLE_BASE) {
 606                                                 fprintf( stderr,
 607                                                         "%s: line %d: inappropriate style \"%s\" in by clause\n",
 608                                                     fname, lineno, style );
 609                                                 acl_usage();
 610                                         }
 611
 612                                         if ( right == NULL || right[ 0 ] == '\0' ) {
 613                                                 fprintf( stderr,
 614                                                         "%s: line %d: missing \"=\" in (or value after) \"%s\" in by clause\n",
 615                                                         fname, lineno, left );
 616                                                 acl_usage();
 617                                         }
 618
 619                                         if( b->a_peername_pat.bv_len ) {
 620                                                 fprintf( stderr,
 621                                                         "%s: line %d: peername pattern already specified.\n",
 622                                                         fname, lineno );
 623                                                 acl_usage();
 624                                         }
 625
 626                                         b->a_peername_style = sty;
 627                                         if (sty == ACL_STYLE_REGEX) {
 628                                                 bv.bv_val = right;
 629                                                 acl_regex_normalized_dn( &bv );
 630                                                 if ( !ber_bvccmp( &bv, '*' ) ) {
 631                                                         regtest(fname, lineno, bv.bv_val);
 632                                                 }
 633                                                 b->a_peername_pat = bv;
 634                                         } else {
 635                                                 ber_str2bv( right, 0, 1, &b->a_peername_pat );
 636                                         }
 637                                         continue;
 638                                 }
 639
 640                                 if ( strcasecmp( left, "sockname" ) == 0 ) {
 641                                         if (sty != ACL_STYLE_REGEX && sty != ACL_STYLE_BASE) {
 642                                                 fprintf( stderr,
 643                                                         "%s: line %d: inappropriate style \"%s\" in by clause\n",
 644                                                     fname, lineno, style );
 645                                                 acl_usage();
 646                                         }
 647
 648                                         if ( right == NULL || right[ 0 ] == '\0' ) {
 649                                                 fprintf( stderr,
 650                                                         "%s: line %d: missing \"=\" in (or value after) \"%s\" in by clause\n",
 651                                                         fname, lineno, left );
 652                                                 acl_usage();
 653                                         }
 654
 655                                         if( b->a_sockname_pat.bv_len ) {
 656                                                 fprintf( stderr,
 657                                                         "%s: line %d: sockname pattern already specified.\n",
 658                                                         fname, lineno );
 659                                                 acl_usage();
 660                                         }
 661
 662                                         b->a_sockname_style = sty;
 663                                         if (sty == ACL_STYLE_REGEX) {
 664                                                 bv.bv_val = right;
 665                                                 acl_regex_normalized_dn( &bv );
 666                                                 if ( !ber_bvccmp( &bv, '*' ) ) {
 667                                                         regtest(fname, lineno, bv.bv_val);
 668                                                 }
 669                                                 b->a_sockname_pat = bv;
 670                                         } else {
 671                                                 ber_str2bv( right, 0, 1, &b->a_sockname_pat );
 672                                         }
 673                                         continue;
 674                                 }
 675
 676                                 if ( strcasecmp( left, "domain" ) == 0 ) {
 677                                         switch ( sty ) {
 678                                         case ACL_STYLE_REGEX:
 679                                         case ACL_STYLE_BASE:
 680                                         case ACL_STYLE_SUBTREE:
 681                                                 break;
 682
 683                                         default:
 684                                                 fprintf( stderr,
 685                                                         "%s: line %d: inappropriate style \"%s\" in by clause\n",
 686                                                     fname, lineno, style );
 687                                                 acl_usage();
 688                                         }
 689
 690                                         if ( right == NULL || right[ 0 ] == '\0' ) {
 691                                                 fprintf( stderr,
 692                                                         "%s: line %d: missing \"=\" in (or value after) \"%s\" in by clause\n",
 693                                                         fname, lineno, left );
 694                                                 acl_usage();
 695                                         }
 696
 697                                         if( b->a_domain_pat.bv_len ) {
 698                                                 fprintf( stderr,
 699                                                         "%s: line %d: domain pattern already specified.\n",
 700                                                         fname, lineno );
 701                                                 acl_usage();
 702                                         }
 703
 704                                         b->a_domain_style = sty;
 705                                         b->a_domain_expand = expand;
 706                                         if (sty == ACL_STYLE_REGEX) {
 707                                                 bv.bv_val = right;
 708                                                 acl_regex_normalized_dn( &bv );
 709                                                 if ( !ber_bvccmp( &bv, '*' ) ) {
 710                                                         regtest(fname, lineno, bv.bv_val);
 711                                                 }
 712                                                 b->a_domain_pat = bv;
 713                                         } else {
 714                                                 ber_str2bv( right, 0, 1, &b->a_domain_pat );
 715                                         }
 716                                         continue;
 717                                 }
 718
 719                                 if ( strcasecmp( left, "sockurl" ) == 0 ) {
 720                                         if (sty != ACL_STYLE_REGEX && sty != ACL_STYLE_BASE) {
 721                                                 fprintf( stderr,
 722                                                         "%s: line %d: inappropriate style \"%s\" in by clause\n",
 723                                                     fname, lineno, style );
 724                                                 acl_usage();
 725                                         }
 726
 727                                         if ( right == NULL || right[ 0 ] == '\0' ) {
 728                                                 fprintf( stderr,
 729                                                         "%s: line %d: missing \"=\" in (or value after) \"%s\" in by clause\n",
 730                                                         fname, lineno, left );
 731                                                 acl_usage();
 732                                         }
 733
 734                                         if( b->a_sockurl_pat.bv_len ) {
 735                                                 fprintf( stderr,
 736                                                         "%s: line %d: sockurl pattern already specified.\n",
 737                                                         fname, lineno );
 738                                                 acl_usage();
 739                                         }
 740
 741                                         b->a_sockurl_style = sty;
 742                                         if (sty == ACL_STYLE_REGEX) {
 743                                                 bv.bv_val = right;
 744                                                 acl_regex_normalized_dn( &bv );
 745                                                 if ( !ber_bvccmp( &bv, '*' ) ) {
 746                                                         regtest(fname, lineno, bv.bv_val);
 747                                                 }
 748                                                 b->a_sockurl_pat = bv;
 749                                         } else {
 750                                                 ber_str2bv( right, 0, 1, &b->a_sockurl_pat );
 751                                         }
 752                                         continue;
 753                                 }
 754
 755                                 if ( strcasecmp( left, "set" ) == 0 ) {
 756                                         if (sty != ACL_STYLE_REGEX && sty != ACL_STYLE_BASE) {
 757                                                 fprintf( stderr,
 758                                                         "%s: line %d: inappropriate style \"%s\" in by clause\n",
 759                                                     fname, lineno, style );
 760                                                 acl_usage();
 761                                         }
 762
 763                                         if( b->a_set_pat.bv_len != 0 ) {
 764                                                 fprintf( stderr,
 765                                                         "%s: line %d: set attribute already specified.\n",
 766                                                         fname, lineno );
 767                                                 acl_usage();
 768                                         }
 769
 770                                         if ( right == NULL || *right == '\0' ) {
 771                                                 fprintf( stderr,
 772                                                         "%s: line %d: no set is defined\n",
 773                                                         fname, lineno );
 774                                                 acl_usage();
 775                                         }
 776
 777                                         b->a_set_style = sty;
 778                                         ber_str2bv( right, 0, 1, &b->a_set_pat );
 779
 780                                         continue;
 781                                 }
 782
 783 #ifdef SLAPD_ACI_ENABLED
 784                                 if ( strcasecmp( left, "aci" ) == 0 ) {
 785                                         if (sty != ACL_STYLE_REGEX && sty != ACL_STYLE_BASE) {
 786                                                 fprintf( stderr,
 787                                                         "%s: line %d: inappropriate style \"%s\" in by clause\n",
 788                                                     fname, lineno, style );
 789                                                 acl_usage();
 790                                         }
 791
 792                                         if( b->a_aci_at != NULL ) {
 793                                                 fprintf( stderr,
 794                                                         "%s: line %d: aci attribute already specified.\n",
 795                                                         fname, lineno );
 796                                                 acl_usage();
 797                                         }
 798
 799                                         if ( right != NULL && *right != '\0' ) {
 800                                                 rc = slap_str2ad( right, &b->a_aci_at, &text );
 801
 802                                                 if( rc != LDAP_SUCCESS ) {
 803                                                         fprintf( stderr,
 804                                                                 "%s: line %d: aci \"%s\": %s\n",
 805                                                                 fname, lineno, right, text );
 806                                                         acl_usage();
 807                                                 }
 808
 809                                         } else {
 810                                                 b->a_aci_at = slap_schema.si_ad_aci;
 811                                         }
 812
 813                                         if( !is_at_syntax( b->a_aci_at->ad_type,
 814                                                 SLAPD_ACI_SYNTAX) )
 815                                         {
 816                                                 fprintf( stderr,
 817                                                         "%s: line %d: aci \"%s\": inappropriate syntax: %s\n",
 818                                                         fname, lineno, right,
 819                                                         b->a_aci_at->ad_type->sat_syntax_oid );
 820                                                 acl_usage();
 821                                         }
 822
 823                                         continue;
 824                                 }
 825 #endif /* SLAPD_ACI_ENABLED */
 826
 827                                 if ( strcasecmp( left, "ssf" ) == 0 ) {
 828                                         if (sty != ACL_STYLE_REGEX && sty != ACL_STYLE_BASE) {
 829                                                 fprintf( stderr,
 830                                                         "%s: line %d: inappropriate style \"%s\" in by clause\n",
 831                                                     fname, lineno, style );
 832                                                 acl_usage();
 833                                         }
 834
 835                                         if( b->a_authz.sai_ssf ) {
 836                                                 fprintf( stderr,
 837                                                         "%s: line %d: ssf attribute already specified.\n",
 838                                                         fname, lineno );
 839                                                 acl_usage();
 840                                         }
 841
 842                                         if ( right == NULL || *right == '\0' ) {
 843                                                 fprintf( stderr,
 844                                                         "%s: line %d: no ssf is defined\n",
 845                                                         fname, lineno );
 846                                                 acl_usage();
 847                                         }
 848
 849                                         b->a_authz.sai_ssf = atoi( right );
 850
 851                                         if( !b->a_authz.sai_ssf ) {
 852                                                 fprintf( stderr,
 853                                                         "%s: line %d: invalid ssf value (%s)\n",
 854                                                         fname, lineno, right );
 855                                                 acl_usage();
 856                                         }
 857                                         continue;
 858                                 }
 859
 860                                 if ( strcasecmp( left, "transport_ssf" ) == 0 ) {
 861                                         if (sty != ACL_STYLE_REGEX && sty != ACL_STYLE_BASE) {
 862                                                 fprintf( stderr,
 863                                                         "%s: line %d: inappropriate style \"%s\" in by clause\n",
 864                                                     fname, lineno, style );
 865                                                 acl_usage();
 866                                         }
 867
 868                                         if( b->a_authz.sai_transport_ssf ) {
 869                                                 fprintf( stderr,
 870                                                         "%s: line %d: transport_ssf attribute already specified.\n",
 871                                                         fname, lineno );
 872                                                 acl_usage();
 873                                         }
 874
 875                                         if ( right == NULL || *right == '\0' ) {
 876                                                 fprintf( stderr,
 877                                                         "%s: line %d: no transport_ssf is defined\n",
 878                                                         fname, lineno );
 879                                                 acl_usage();
 880                                         }
 881
 882                                         b->a_authz.sai_transport_ssf = atoi( right );
 883
 884                                         if( !b->a_authz.sai_transport_ssf ) {
 885                                                 fprintf( stderr,
 886                                                         "%s: line %d: invalid transport_ssf value (%s)\n",
 887                                                         fname, lineno, right );
 888                                                 acl_usage();
 889                                         }
 890                                         continue;
 891                                 }
 892
 893                                 if ( strcasecmp( left, "tls_ssf" ) == 0 ) {
 894                                         if (sty != ACL_STYLE_REGEX && sty != ACL_STYLE_BASE) {
 895                                                 fprintf( stderr,
 896                                                         "%s: line %d: inappropriate style \"%s\" in by clause\n",
 897                                                     fname, lineno, style );
 898                                                 acl_usage();
 899                                         }
 900
 901                                         if( b->a_authz.sai_tls_ssf ) {
 902                                                 fprintf( stderr,
 903                                                         "%s: line %d: tls_ssf attribute already specified.\n",
 904                                                         fname, lineno );
 905                                                 acl_usage();
 906                                         }
 907
 908                                         if ( right == NULL || *right == '\0' ) {
 909                                                 fprintf( stderr,
 910                                                         "%s: line %d: no tls_ssf is defined\n",
 911                                                         fname, lineno );
 912                                                 acl_usage();
 913                                         }
 914
 915                                         b->a_authz.sai_tls_ssf = atoi( right );
 916
 917                                         if( !b->a_authz.sai_tls_ssf ) {
 918                                                 fprintf( stderr,
 919                                                         "%s: line %d: invalid tls_ssf value (%s)\n",
 920                                                         fname, lineno, right );
 921                                                 acl_usage();
 922                                         }
 923                                         continue;
 924                                 }
 925
 926                                 if ( strcasecmp( left, "sasl_ssf" ) == 0 ) {
 927                                         if (sty != ACL_STYLE_REGEX && sty != ACL_STYLE_BASE) {
 928                                                 fprintf( stderr,
 929                                                         "%s: line %d: inappropriate style \"%s\" in by clause\n",
 930                                                     fname, lineno, style );
 931                                                 acl_usage();
 932                                         }
 933
 934                                         if( b->a_authz.sai_sasl_ssf ) {
 935                                                 fprintf( stderr,
 936                                                         "%s: line %d: sasl_ssf attribute already specified.\n",
 937                                                         fname, lineno );
 938                                                 acl_usage();
 939                                         }
 940
 941                                         if ( right == NULL || *right == '\0' ) {
 942                                                 fprintf( stderr,
 943                                                         "%s: line %d: no sasl_ssf is defined\n",
 944                                                         fname, lineno );
 945                                                 acl_usage();
 946                                         }
 947
 948                                         b->a_authz.sai_sasl_ssf = atoi( right );
 949
 950                                         if( !b->a_authz.sai_sasl_ssf ) {
 951                                                 fprintf( stderr,
 952                                                         "%s: line %d: invalid sasl_ssf value (%s)\n",
 953                                                         fname, lineno, right );
 954                                                 acl_usage();
 955                                         }
 956                                         continue;
 957                                 }
 958
 959                                 if( right != NULL ) {
 960                                         /* unsplit */
 961                                         right[-1] = '=';
 962                                 }
 963                                 break;
 964                         }
 965
 966                         if( i == argc || ( strcasecmp( left, "stop" ) == 0 )) {
 967                                 /* out of arguments or plain stop */
 968
 969                                 ACL_PRIV_ASSIGN(b->a_access_mask, ACL_PRIV_ADDITIVE);
 970                                 b->a_type = ACL_STOP;
 971
 972                                 access_append( &a->acl_access, b );
 973                                 continue;
 974                         }
 975
 976                         if( strcasecmp( left, "continue" ) == 0 ) {
 977                                 /* plain continue */
 978
 979                                 ACL_PRIV_ASSIGN(b->a_access_mask, ACL_PRIV_ADDITIVE);
 980                                 b->a_type = ACL_CONTINUE;
 981
 982                                 access_append( &a->acl_access, b );
 983                                 continue;
 984                         }
 985
 986                         if( strcasecmp( left, "break" ) == 0 ) {
 987                                 /* plain continue */
 988
 989                                 ACL_PRIV_ASSIGN(b->a_access_mask, ACL_PRIV_ADDITIVE);
 990                                 b->a_type = ACL_BREAK;
 991
 992                                 access_append( &a->acl_access, b );
 993                                 continue;
 994                         }
 995
 996                         if ( strcasecmp( left, "by" ) == 0 ) {
 997                                 /* we've gone too far */
 998                                 --i;
 999                                 ACL_PRIV_ASSIGN(b->a_access_mask, ACL_PRIV_ADDITIVE);
1000                                 b->a_type = ACL_STOP;
1001
1002                                 access_append( &a->acl_access, b );
1003                                 continue;
1004                         }
1005
1006                         /* get <access> */
1007                         if( strncasecmp( left, "self", 4 ) == 0 ) {
1008                                 b->a_dn_self = 1;
1009                                 ACL_PRIV_ASSIGN( b->a_access_mask, str2accessmask( &left[4] ) );
1010
1011                         } else {
1012                                 ACL_PRIV_ASSIGN( b->a_access_mask, str2accessmask( left ) );
1013                         }
1014
1015                         if( ACL_IS_INVALID( b->a_access_mask ) ) {
1016                                 fprintf( stderr,
1017                                         "%s: line %d: expecting <access> got \"%s\"\n",
1018                                         fname, lineno, left );
1019                                 acl_usage();
1020                         }
1021
1022                         b->a_type = ACL_STOP;
1023
1024                         if( ++i == argc ) {
1025                                 /* out of arguments or plain stop */
1026                                 access_append( &a->acl_access, b );
1027                                 continue;
1028                         }
1029
1030                         if( strcasecmp( argv[i], "continue" ) == 0 ) {
1031                                 /* plain continue */
1032                                 b->a_type = ACL_CONTINUE;
1033
1034                         } else if( strcasecmp( argv[i], "break" ) == 0 ) {
1035                                 /* plain continue */
1036                                 b->a_type = ACL_BREAK;
1037
1038                         } else if ( strcasecmp( argv[i], "stop" ) != 0 ) {
1039                                 /* gone to far */
1040                                 i--;
1041                         }
1042
1043                         access_append( &a->acl_access, b );
1044
1045                 } else {
1046                         fprintf( stderr,
1047                     "%s: line %d: expecting \"to\" or \"by\" got \"%s\"\n",
1048                             fname, lineno, argv[i] );
1049                         acl_usage();
1050                 }
1051         }
1052
1053         /* if we have no real access clause, complain and do nothing */
1054         if ( a == NULL ) {
1055                         fprintf( stderr,
1056                                 "%s: line %d: warning: no access clause(s) specified in access line\n",
1057                             fname, lineno );
1058
1059         } else {
1060 #ifdef LDAP_DEBUG
1061                 if (ldap_debug & LDAP_DEBUG_ACL)
1062                         print_acl(be, a);
1063 #endif
1064
1065                 if ( a->acl_access == NULL ) {
1066                         fprintf( stderr,
1067                         "%s: line %d: warning: no by clause(s) specified in access line\n",
1068                             fname, lineno );
1069                 }
1070
1071                 if ( be != NULL ) {
1072                         acl_append( &be->be_acl, a );
1073                 } else {
1074                         acl_append( &global_acl, a );
1075                 }
1076         }
1077 }
1078
1079 char *
1080 accessmask2str( slap_mask_t mask, char *buf )
1081 {
1082         int none=1;
1083         char *ptr = buf;
1084
1085         assert( buf != NULL );
1086
1087         if ( ACL_IS_INVALID( mask ) ) {
1088                 return "invalid";
1089         }
1090
1091         buf[0] = '\0';
1092
1093         if ( ACL_IS_LEVEL( mask ) ) {
1094                 if ( ACL_LVL_IS_NONE(mask) ) {
1095                         ptr = slap_strcopy( ptr, "none" );
1096
1097                 } else if ( ACL_LVL_IS_AUTH(mask) ) {
1098                         ptr = slap_strcopy( ptr, "auth" );
1099
1100                 } else if ( ACL_LVL_IS_COMPARE(mask) ) {
1101                         ptr = slap_strcopy( ptr, "compare" );
1102
1103                 } else if ( ACL_LVL_IS_SEARCH(mask) ) {
1104                         ptr = slap_strcopy( ptr, "search" );
1105
1106                 } else if ( ACL_LVL_IS_READ(mask) ) {
1107                         ptr = slap_strcopy( ptr, "read" );
1108
1109                 } else if ( ACL_LVL_IS_WRITE(mask) ) {
1110                         ptr = slap_strcopy( ptr, "write" );
1111                 } else {
1112                         ptr = slap_strcopy( ptr, "unknown" );
1113                 }
1114
1115                 *ptr++ = '(';
1116         }
1117
1118         if( ACL_IS_ADDITIVE( mask ) ) {
1119                 *ptr++ = '+';
1120
1121         } else if( ACL_IS_SUBTRACTIVE( mask ) ) {
1122                 *ptr++ = '-';
1123
1124         } else {
1125                 *ptr++ = '=';
1126         }
1127
1128         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_WRITE) ) {
1129                 none = 0;
1130                 *ptr++ = 'w';
1131         }
1132
1133         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_READ) ) {
1134                 none = 0;
1135                 *ptr++ = 'r';
1136         }
1137
1138         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_SEARCH) ) {
1139                 none = 0;
1140                 *ptr++ = 's';
1141         }
1142
1143         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_COMPARE) ) {
1144                 none = 0;
1145                 *ptr++ = 'c';
1146         }
1147
1148         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_AUTH) ) {
1149                 none = 0;
1150                 *ptr++ = 'x';
1151         }
1152
1153         if ( none && ACL_PRIV_ISSET(mask, ACL_PRIV_NONE) ) {
1154                 none = 0;
1155                 *ptr++ = 'n';
1156         }
1157
1158         if ( none ) {
1159                 *ptr++ = '0';
1160         }
1161
1162         if ( ACL_IS_LEVEL( mask ) ) {
1163                 *ptr++ = ')';
1164         }
1165
1166         *ptr = '\0';
1167
1168         return buf;
1169 }
1170
1171 slap_mask_t
1172 str2accessmask( const char *str )
1173 {
1174         slap_mask_t     mask;
1175
1176         if( !ASCII_ALPHA(str[0]) ) {
1177                 int i;
1178
1179                 if ( str[0] == '=' ) {
1180                         ACL_INIT(mask);
1181
1182                 } else if( str[0] == '+' ) {
1183                         ACL_PRIV_ASSIGN(mask, ACL_PRIV_ADDITIVE);
1184
1185                 } else if( str[0] == '-' ) {
1186                         ACL_PRIV_ASSIGN(mask, ACL_PRIV_SUBSTRACTIVE);
1187
1188                 } else {
1189                         ACL_INVALIDATE(mask);
1190                         return mask;
1191                 }
1192
1193                 for( i=1; str[i] != '\0'; i++ ) {
1194                         if( TOLOWER(str[i]) == 'w' ) {
1195                                 ACL_PRIV_SET(mask, ACL_PRIV_WRITE);
1196
1197                         } else if( TOLOWER(str[i]) == 'r' ) {
1198                                 ACL_PRIV_SET(mask, ACL_PRIV_READ);
1199
1200                         } else if( TOLOWER(str[i]) == 's' ) {
1201                                 ACL_PRIV_SET(mask, ACL_PRIV_SEARCH);
1202
1203                         } else if( TOLOWER(str[i]) == 'c' ) {
1204                                 ACL_PRIV_SET(mask, ACL_PRIV_COMPARE);
1205
1206                         } else if( TOLOWER(str[i]) == 'x' ) {
1207                                 ACL_PRIV_SET(mask, ACL_PRIV_AUTH);
1208
1209                         } else if( str[i] != '0' ) {
1210                                 ACL_INVALIDATE(mask);
1211                                 return mask;
1212                         }
1213                 }
1214
1215                 return mask;
1216         }
1217
1218         if ( strcasecmp( str, "none" ) == 0 ) {
1219                 ACL_LVL_ASSIGN_NONE(mask);
1220
1221         } else if ( strcasecmp( str, "auth" ) == 0 ) {
1222                 ACL_LVL_ASSIGN_AUTH(mask);
1223
1224         } else if ( strcasecmp( str, "compare" ) == 0 ) {
1225                 ACL_LVL_ASSIGN_COMPARE(mask);
1226
1227         } else if ( strcasecmp( str, "search" ) == 0 ) {
1228                 ACL_LVL_ASSIGN_SEARCH(mask);
1229
1230         } else if ( strcasecmp( str, "read" ) == 0 ) {
1231                 ACL_LVL_ASSIGN_READ(mask);
1232
1233         } else if ( strcasecmp( str, "write" ) == 0 ) {
1234                 ACL_LVL_ASSIGN_WRITE(mask);
1235
1236         } else {
1237                 ACL_INVALIDATE( mask );
1238         }
1239
1240         return mask;
1241 }
1242
1243 static void
1244 acl_usage( void )
1245 {
1246         fprintf( stderr, "\n"
1247                 "<access clause> ::= access to <what> "
1248                                 "[ by <who> <access> [ <control> ] ]+ \n"
1249                 "<what> ::= * | [dn[.<dnstyle>]=<regex>] [filter=<ldapfilter>] [attrs=<attrlist>]\n"
1250                 "<attrlist> ::= <attr> | <attr> , <attrlist>\n"
1251                 "<attr> ::= <attrname> | entry | children\n"
1252                 "<who> ::= [ * | anonymous | users | self | dn[.<dnstyle>]=<regex> ]\n"
1253                         "\t[dnattr=<attrname>]\n"
1254                         "\t[group[/<objectclass>[/<attrname>]][.<style>]=<regex>]\n"
1255                         "\t[peername[.<style>]=<regex>] [sockname[.<style>]=<regex>]\n"
1256                         "\t[domain[.<style>]=<regex>] [sockurl[.<style>]=<regex>]\n"
1257 #ifdef SLAPD_ACI_ENABLED
1258                         "\t[aci=<attrname>]\n"
1259 #endif
1260                         "\t[ssf=<n>] [transport_ssf=<n>] [tls_ssf=<n>] [sasl_ssf=<n>]\n"
1261                 "<dnstyle> ::= regex | base | exact (alias of base) | one | sub | children\n"
1262                 "<style> ::= regex | base | exact (alias of base)\n"
1263                 "<groupflags> ::= R\n"
1264                 "<access> ::= [self]{<level>|<priv>}\n"
1265                 "<level> ::= none | auth | compare | search | read | write\n"
1266                 "<priv> ::= {=|+|-}{w|r|s|c|x}+\n"
1267                 "<control> ::= [ stop | continue | break ]\n"
1268                 );
1269         exit( EXIT_FAILURE );
1270 }
1271
1272 /*
1273  * At present it simply eats the (optional) space after
1274  * a RDN separator (,)
1275  * Eventually will evolve in a more complete normalization
1276  *
1277  * Note that the input berval only needs bv_val, it ignores
1278  * the input bv_len and sets it on return.
1279  */
1280 static void
1281 acl_regex_normalized_dn(
1282         struct berval *pattern
1283 )
1284 {
1285         char *str, *p;
1286
1287         str = ch_strdup( pattern->bv_val );
1288
1289         for ( p = str; p && p[ 0 ]; p++ ) {
1290                 /* escape */
1291                 if ( p[ 0 ] == '\\' ) {
1292                         /*
1293                          * if escaping a hex pair we should
1294                          * increment p twice; however, in that
1295                          * case the second hex number does
1296                          * no harm
1297                          */
1298                         p++;
1299                 }
1300
1301                 if ( p[ 0 ] == ',' ) {
1302                         if ( p[ 1 ] == ' ' ) {
1303                                 char *q;
1304
1305                                 /*
1306                                  * too much space should be
1307                                  * an error if we are pedantic
1308                                  */
1309                                 for ( q = &p[ 2 ]; q[ 0 ] == ' '; q++ ) {
1310                                         /* DO NOTHING */ ;
1311                                 }
1312                                 AC_MEMCPY( p+1, q, pattern->bv_len-(q-str)+1);
1313                         }
1314                 }
1315         }
1316         pattern->bv_val = str;
1317         pattern->bv_len = p-str;
1318
1319         return;
1320 }
1321
1322 static void
1323 split(
1324     char        *line,
1325     int         splitchar,
1326     char        **left,
1327     char        **right
1328 )
1329 {
1330         *left = line;
1331         if ( (*right = strchr( line, splitchar )) != NULL ) {
1332                 *((*right)++) = '\0';
1333         }
1334 }
1335
1336 static void
1337 access_append( Access **l, Access *a )
1338 {
1339         for ( ; *l != NULL; l = &(*l)->a_next )
1340                 ;       /* NULL */
1341
1342         *l = a;
1343 }
1344
1345 void
1346 acl_append( AccessControl **l, AccessControl *a )
1347 {
1348         for ( ; *l != NULL; l = &(*l)->acl_next )
1349                 ;       /* NULL */
1350
1351         *l = a;
1352 }
1353
1354 static void
1355 access_free( Access *a )
1356 {
1357         if ( a->a_dn_pat.bv_val )
1358                 free ( a->a_dn_pat.bv_val );
1359         if ( a->a_peername_pat.bv_val )
1360                 free ( a->a_peername_pat.bv_val );
1361         if ( a->a_sockname_pat.bv_val )
1362                 free ( a->a_sockname_pat.bv_val );
1363         if ( a->a_domain_pat.bv_val )
1364                 free ( a->a_domain_pat.bv_val );
1365         if ( a->a_sockurl_pat.bv_val )
1366                 free ( a->a_sockurl_pat.bv_val );
1367         if ( a->a_set_pat.bv_len )
1368                 free ( a->a_set_pat.bv_val );
1369         if ( a->a_group_pat.bv_len )
1370                 free ( a->a_group_pat.bv_val );
1371         free( a );
1372 }
1373
1374 void
1375 acl_free( AccessControl *a )
1376 {
1377         Access *n;
1378         AttributeName *an;
1379
1380         if ( a->acl_filter )
1381                 filter_free( a->acl_filter );
1382         if ( a->acl_dn_pat.bv_len )
1383                 free ( a->acl_dn_pat.bv_val );
1384         if ( a->acl_attrs ) {
1385                 for ( an = a->acl_attrs; an->an_name.bv_val; an++ ) {
1386                         free( an->an_name.bv_val );
1387                 }
1388                 free( a->acl_attrs );
1389         }
1390         for (; a->acl_access; a->acl_access = n) {
1391                 n = a->acl_access->a_next;
1392                 access_free( a->acl_access );
1393         }
1394         free( a );
1395 }
1396
1397 /* Because backend_startup uses acl_append to tack on the global_acl to
1398  * the end of each backend's acl, we cannot just take one argument and
1399  * merrily free our way to the end of the list. backend_destroy calls us
1400  * with the be_acl in arg1, and global_acl in arg2 to give us a stopping
1401  * point. config_destroy calls us with global_acl in arg1 and NULL in
1402  * arg2, so we then proceed to polish off the global_acl.
1403  */
1404 void
1405 acl_destroy( AccessControl *a, AccessControl *end )
1406 {
1407         AccessControl *n;
1408
1409         for (; a && a!= end; a=n) {
1410                 n = a->acl_next;
1411                 acl_free( a );
1412         }
1413 }
1414
1415 char *
1416 access2str( slap_access_t access )
1417 {
1418         if ( access == ACL_NONE ) {
1419                 return "none";
1420
1421         } else if ( access == ACL_AUTH ) {
1422                 return "auth";
1423
1424         } else if ( access == ACL_COMPARE ) {
1425                 return "compare";
1426
1427         } else if ( access == ACL_SEARCH ) {
1428                 return "search";
1429
1430         } else if ( access == ACL_READ ) {
1431                 return "read";
1432
1433         } else if ( access == ACL_WRITE ) {
1434                 return "write";
1435         }
1436
1437         return "unknown";
1438 }
1439
1440 slap_access_t
1441 str2access( const char *str )
1442 {
1443         if ( strcasecmp( str, "none" ) == 0 ) {
1444                 return ACL_NONE;
1445
1446         } else if ( strcasecmp( str, "auth" ) == 0 ) {
1447                 return ACL_AUTH;
1448
1449         } else if ( strcasecmp( str, "compare" ) == 0 ) {
1450                 return ACL_COMPARE;
1451
1452         } else if ( strcasecmp( str, "search" ) == 0 ) {
1453                 return ACL_SEARCH;
1454
1455         } else if ( strcasecmp( str, "read" ) == 0 ) {
1456                 return ACL_READ;
1457
1458         } else if ( strcasecmp( str, "write" ) == 0 ) {
1459                 return ACL_WRITE;
1460         }
1461
1462         return( ACL_INVALID_ACCESS );
1463 }
1464
1465 #ifdef LDAP_DEBUG
1466
1467 static char *style_strings[5] = {
1468                         "regex",
1469                         "base",
1470                         "one",
1471                         "subtree",
1472                         "children"
1473                 };
1474
1475
1476 static void
1477 print_access( Access *b )
1478 {
1479         char maskbuf[ACCESSMASK_MAXLEN];
1480
1481         fprintf( stderr, "\tby" );
1482
1483         if ( b->a_dn_pat.bv_len != 0 ) {
1484                 if( strcmp(b->a_dn_pat.bv_val, "*") == 0
1485                         || strcmp(b->a_dn_pat.bv_val, "users") == 0
1486                         || strcmp(b->a_dn_pat.bv_val, "anonymous") == 0
1487                         || strcmp(b->a_dn_pat.bv_val, "self") == 0 )
1488                 {
1489                         fprintf( stderr, " %s", b->a_dn_pat.bv_val );
1490
1491                 } else {
1492                         fprintf( stderr, " dn.%s=%s",
1493                                 style_strings[b->a_dn_style], b->a_dn_pat.bv_val );
1494                 }
1495         }
1496
1497         if ( b->a_dn_at != NULL ) {
1498                 fprintf( stderr, " dnattr=%s", b->a_dn_at->ad_cname.bv_val );
1499         }
1500
1501         if ( b->a_group_pat.bv_len ) {
1502                 fprintf( stderr, " group=%s", b->a_group_pat.bv_val );
1503
1504                 if ( b->a_group_oc ) {
1505                         fprintf( stderr, " objectClass: %s",
1506                                 b->a_group_oc->soc_oclass.oc_oid );
1507
1508                         if ( b->a_group_at ) {
1509                                 fprintf( stderr, " attributeType: %s", b->a_group_at->ad_cname.bv_val );
1510                         }
1511                 }
1512     }
1513
1514         if ( b->a_peername_pat.bv_len != 0 ) {
1515                 fprintf( stderr, " peername=%s", b->a_peername_pat.bv_val );
1516         }
1517
1518         if ( b->a_sockname_pat.bv_len != 0 ) {
1519                 fprintf( stderr, " sockname=%s", b->a_sockname_pat.bv_val );
1520         }
1521
1522         if ( b->a_domain_pat.bv_len != 0 ) {
1523                 fprintf( stderr, " domain=%s", b->a_domain_pat.bv_val );
1524         }
1525
1526         if ( b->a_sockurl_pat.bv_len != 0 ) {
1527                 fprintf( stderr, " sockurl=%s", b->a_sockurl_pat.bv_val );
1528         }
1529
1530 #ifdef SLAPD_ACI_ENABLED
1531         if ( b->a_aci_at != NULL ) {
1532                 fprintf( stderr, " aci=%s", b->a_aci_at->ad_cname.bv_val );
1533         }
1534 #endif
1535
1536         /* Security Strength Factors */
1537         if ( b->a_authz.sai_ssf ) {
1538                 fprintf( stderr, " ssf=%u",
1539                         b->a_authz.sai_ssf );
1540         }
1541         if ( b->a_authz.sai_transport_ssf ) {
1542                 fprintf( stderr, " transport_ssf=%u",
1543                         b->a_authz.sai_transport_ssf );
1544         }
1545         if ( b->a_authz.sai_tls_ssf ) {
1546                 fprintf( stderr, " tls_ssf=%u",
1547                         b->a_authz.sai_tls_ssf );
1548         }
1549         if ( b->a_authz.sai_sasl_ssf ) {
1550                 fprintf( stderr, " sasl_ssf=%u",
1551                         b->a_authz.sai_sasl_ssf );
1552         }
1553
1554         fprintf( stderr, " %s%s",
1555                 b->a_dn_self ? "self" : "",
1556                 accessmask2str( b->a_access_mask, maskbuf ) );
1557
1558         if( b->a_type == ACL_BREAK ) {
1559                 fprintf( stderr, " break" );
1560
1561         } else if( b->a_type == ACL_CONTINUE ) {
1562                 fprintf( stderr, " continue" );
1563
1564         } else if( b->a_type != ACL_STOP ) {
1565                 fprintf( stderr, " unknown-control" );
1566         }
1567
1568         fprintf( stderr, "\n" );
1569 }
1570
1571
1572 static void
1573 print_acl( Backend *be, AccessControl *a )
1574 {
1575         int             to = 0;
1576         Access  *b;
1577
1578         fprintf( stderr, "%s ACL: access to",
1579                 be == NULL ? "Global" : "Backend" );
1580
1581         if ( a->acl_dn_pat.bv_len != 0 ) {
1582                 to++;
1583                 fprintf( stderr, " dn.%s=%s\n",
1584                         style_strings[a->acl_dn_style], a->acl_dn_pat.bv_val );
1585         }
1586
1587         if ( a->acl_filter != NULL ) {
1588                 struct berval bv = { 0, NULL };
1589                 to++;
1590                 filter2bv( a->acl_filter, &bv );
1591                 fprintf( stderr, " filter=%s\n", bv.bv_val );
1592                 ch_free( bv.bv_val );
1593         }
1594
1595         if ( a->acl_attrs != NULL ) {
1596                 int     first = 1;
1597                 AttributeName *an;
1598                 to++;
1599
1600                 fprintf( stderr, " attrs=" );
1601                 for ( an = a->acl_attrs; an && an->an_name.bv_val; an++ ) {
1602                         if ( ! first ) {
1603                                 fprintf( stderr, "," );
1604                         }
1605                         fputs( an->an_name.bv_val, stderr );
1606                         first = 0;
1607                 }
1608                 fprintf(  stderr, "\n" );
1609         }
1610
1611         if( !to ) {
1612                 fprintf( stderr, " *\n" );
1613         }
1614
1615         for ( b = a->acl_access; b != NULL; b = b->a_next ) {
1616                 print_access( b );
1617         }
1618
1619         fprintf( stderr, "\n" );
1620 }
1621
1622 #endif /* LDAP_DEBUG */