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 1998-2000 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
  20 static void             split(char *line, int splitchar, char **left, char **right);
  21 static void             access_append(Access **l, Access *a);
  22 static void             acl_usage(void) LDAP_GCCATTR((noreturn));
  23
  24 #ifdef LDAP_DEBUG
  25 static void             print_acl(Backend *be, AccessControl *a);
  26 static void             print_access(Access *b);
  27 #endif
  28
  29 static int
  30 regtest(const char *fname, int lineno, char *pat) {
  31         int e;
  32         regex_t re;
  33
  34         char buf[512];
  35         unsigned size;
  36
  37         char *sp;
  38         char *dp;
  39         int  flag;
  40
  41         sp = pat;
  42         dp = buf;
  43         size = 0;
  44         buf[0] = '\0';
  45
  46         for (size = 0, flag = 0; (size < sizeof(buf)) && *sp; sp++) {
  47                 if (flag) {
  48                         if (*sp == '$'|| (*sp >= '0' && *sp <= '9')) {
  49                                 *dp++ = *sp;
  50                                 size++;
  51                         }
  52                         flag = 0;
  53
  54                 } else {
  55                         if (*sp == '$') {
  56                                 flag = 1;
  57                         } else {
  58                                 *dp++ = *sp;
  59                                 size++;
  60                         }
  61                 }
  62         }
  63
  64         *dp = '\0';
  65         if ( size >= (sizeof(buf)-1) ) {
  66                 fprintf( stderr,
  67                         "%s: line %d: regular expression \"%s\" too large\n",
  68                         fname, lineno, pat );
  69                 acl_usage();
  70         }
  71
  72         if ((e = regcomp(&re, buf, REG_EXTENDED|REG_ICASE))) {
  73                 char error[512];
  74                 regerror(e, &re, error, sizeof(error));
  75                 fprintf( stderr,
  76                         "%s: line %d: regular expression \"%s\" bad because of %s\n",
  77                         fname, lineno, pat, error );
  78                 acl_usage();
  79                 return(0);
  80         }
  81         regfree(&re);
  82         return(1);
  83 }
  84
  85 void
  86 parse_acl(
  87     Backend     *be,
  88     const char  *fname,
  89     int         lineno,
  90     int         argc,
  91     char        **argv
  92 )
  93 {
  94         int             i;
  95         char            *left, *right, *style;
  96         AccessControl   *a;
  97         Access  *b;
  98         int rc;
  99         const char *text;
 100
 101         a = NULL;
 102         for ( i = 1; i < argc; i++ ) {
 103                 /* to clause - select which entries are protected */
 104                 if ( strcasecmp( argv[i], "to" ) == 0 ) {
 105                         if ( a != NULL ) {
 106                                 fprintf( stderr,
 107                 "%s: line %d: only one to clause allowed in access line\n",
 108                                     fname, lineno );
 109                                 acl_usage();
 110                         }
 111                         a = (AccessControl *) ch_calloc( 1, sizeof(AccessControl) );
 112                         a->acl_filter = NULL;
 113                         a->acl_dn_pat = NULL;
 114                         a->acl_attrs  = NULL;
 115                         a->acl_access = NULL;
 116                         a->acl_next   = NULL;
 117                         for ( ++i; i < argc; i++ ) {
 118                                 if ( strcasecmp( argv[i], "by" ) == 0 ) {
 119                                         i--;
 120                                         break;
 121                                 }
 122
 123                                 if ( strcasecmp( argv[i], "*" ) == 0 ) {
 124                                         if( a->acl_dn_pat != NULL ) {
 125                                                 fprintf( stderr,
 126                                                         "%s: line %d: dn pattern"
 127                                                         " already specified in to clause.\n",
 128                                                         fname, lineno );
 129                                                 acl_usage();
 130                                         }
 131
 132                                         a->acl_dn_pat = ch_strdup( "*" );
 133                                         continue;
 134                                 }
 135
 136                                 split( argv[i], '=', &left, &right );
 137                                 split( left, '.', &left, &style );
 138
 139                                 if ( right == NULL || *right == '\0' ) {
 140                                         fprintf( stderr,
 141         "%s: line %d: missing \"=\" in (or value after) \"%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 != NULL ) {
 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                                                 if ( strcmp(right, "*") == 0
 160                                                         || strcmp(right, ".*") == 0
 161                                                         || strcmp(right, ".*$") == 0
 162                                                         || strcmp(right, "^.*") == 0
 163                                                         || strcmp(right, "^.*$$") == 0
 164                                                         || strcmp(right, ".*$$") == 0
 165                                                         || strcmp(right, "^.*$$") == 0 )
 166                                                 {
 167                                                         a->acl_dn_pat = ch_strdup( "*" );
 168
 169                                                 } else {
 170                                                         a->acl_dn_pat = ch_strdup( right );
 171                                                 }
 172                                         } else if ( strcasecmp( style, "base" ) == 0 ) {
 173                                                 a->acl_dn_style = ACL_STYLE_BASE;
 174                                                 a->acl_dn_pat = ch_strdup( right );
 175
 176                                         } else if ( strcasecmp( style, "one" ) == 0 ) {
 177                                                 a->acl_dn_style = ACL_STYLE_ONE;
 178                                                 a->acl_dn_pat = ch_strdup( right );
 179
 180                                         } else if ( strcasecmp( style, "subtree" ) == 0 ) {
 181                                                 a->acl_dn_style = ACL_STYLE_SUBTREE;
 182                                                 a->acl_dn_pat = ch_strdup( right );
 183
 184                                         } else if ( strcasecmp( style, "children" ) == 0 ) {
 185                                                 a->acl_dn_style = ACL_STYLE_CHILDREN;
 186                                                 a->acl_dn_pat = ch_strdup( right );
 187
 188                                         } else {
 189                                                 fprintf( stderr,
 190         "%s: line %d: unknown dn style \"%s\" in to clause\n",
 191                                                     fname, lineno, style );
 192                                                 acl_usage();
 193                                         }
 194
 195                                         continue;
 196                                 }
 197
 198                                 if ( strcasecmp( left, "filter" ) == 0 ) {
 199                                         if ( (a->acl_filter = str2filter(
 200                                             right )) == NULL ) {
 201                                                 fprintf( stderr,
 202                                 "%s: line %d: bad filter \"%s\" in to clause\n",
 203                                                     fname, lineno, right );
 204                                                 acl_usage();
 205                                         }
 206
 207                                 } else if ( strncasecmp( left, "attr", 4 ) == 0 ) {
 208                                         char    **alist;
 209
 210                                         alist = str2charray( right, "," );
 211                                         charray_merge( &a->acl_attrs, alist );
 212                                         charray_free( alist );
 213
 214                                 } else {
 215                                         fprintf( stderr,
 216                                                 "%s: line %d: expecting <what> got \"%s\"\n",
 217                                             fname, lineno, left );
 218                                         acl_usage();
 219                                 }
 220                         }
 221
 222                         if ( a->acl_dn_pat != NULL && strcmp(a->acl_dn_pat, "*") == 0) {
 223                                 free( a->acl_dn_pat );
 224                                 a->acl_dn_pat = NULL;
 225                         }
 226
 227                         if( a->acl_dn_pat != NULL ) {
 228                                 if ( a->acl_dn_style != ACL_STYLE_REGEX )
 229                                 {
 230                                         dn_normalize(a->acl_dn_pat);
 231
 232                                 } else {
 233                                         int e = regcomp( &a->acl_dn_re, a->acl_dn_pat,
 234                                                          REG_EXTENDED | REG_ICASE );
 235                                         if ( e ) {
 236                                                 char buf[512];
 237                                                 regerror( e, &a->acl_dn_re, buf, sizeof(buf) );
 238                                                 fprintf( stderr,
 239                                         "%s: line %d: regular expression \"%s\" bad because of %s\n",
 240                                                          fname, lineno, right, buf );
 241                                                 acl_usage();
 242                                         }
 243                                 }
 244                         }
 245
 246                 /* by clause - select who has what access to entries */
 247                 } else if ( strcasecmp( argv[i], "by" ) == 0 ) {
 248                         if ( a == NULL ) {
 249                                 fprintf( stderr,
 250                                         "%s: line %d: to clause required before by clause in access line\n",
 251                                     fname, lineno );
 252                                 acl_usage();
 253                         }
 254
 255                         /*
 256                          * by clause consists of <who> and <access>
 257                          */
 258
 259                         b = (Access *) ch_calloc( 1, sizeof(Access) );
 260
 261                         ACL_INVALIDATE( b->a_mask );
 262
 263                         if ( ++i == argc ) {
 264                                 fprintf( stderr,
 265                             "%s: line %d: premature eol: expecting <who>\n",
 266                                     fname, lineno );
 267                                 acl_usage();
 268                         }
 269
 270                         /* get <who> */
 271                         for ( ; i < argc; i++ ) {
 272                                 char *pat;
 273                                 slap_style_t sty = ACL_STYLE_REGEX;
 274
 275                                 split( argv[i], '=', &left, &right );
 276                                 split( left, '.', &left, &style );
 277                                 if ( style == NULL || *style == '\0'
 278                                         || strcasecmp( style, "regex" ) == 0 )
 279                                 {
 280                                         sty = ACL_STYLE_REGEX;
 281                                 } else if ( strcasecmp( style, "exact" ) == 0 ) {
 282                                         sty = ACL_STYLE_EXACT;
 283                                 } else if ( strcasecmp( style, "base" ) == 0 ) {
 284                                         sty = ACL_STYLE_BASE;
 285                                 } else if ( strcasecmp( style, "one" ) == 0 ) {
 286                                         sty = ACL_STYLE_ONE;
 287                                 } else if ( strcasecmp( style, "subtree" ) == 0 ) {
 288                                         sty = ACL_STYLE_SUBTREE;
 289                                 } else if ( strcasecmp( style, "children" ) == 0 ) {
 290                                         sty = ACL_STYLE_CHILDREN;
 291                                 } else {
 292                                         fprintf( stderr,
 293                                                 "%s: line %d: unknown style \"%s\" in by clause\n",
 294                                             fname, lineno, style );
 295                                         acl_usage();
 296                                 }
 297
 298                                 if ( strcasecmp( argv[i], "*" ) == 0 ) {
 299                                         pat = ch_strdup( "*" );
 300
 301                                 } else if ( strcasecmp( argv[i], "anonymous" ) == 0 ) {
 302                                         pat = ch_strdup( "anonymous" );
 303
 304                                 } else if ( strcasecmp( argv[i], "self" ) == 0 ) {
 305                                         pat = ch_strdup( "self" );
 306
 307                                 } else if ( strcasecmp( argv[i], "users" ) == 0 ) {
 308                                         pat = ch_strdup( "users" );
 309
 310                                 } else if ( strcasecmp( left, "dn" ) == 0 ) {
 311                                         if ( sty == ACL_STYLE_REGEX ) {
 312                                                 b->a_dn_style = ACL_STYLE_REGEX;
 313                                                 if( right == NULL ) {
 314                                                         /* no '=' */
 315                                                         pat = ch_strdup( "users" );
 316
 317                                                 } else if (*right == '\0' ) {
 318                                                         /* dn="" */
 319                                                         pat = ch_strdup( "anonymous" );
 320
 321                                                 } else if ( strcmp( right, "*" ) == 0 ) {
 322                                                         /* dn=* */
 323                                                         /* any or users?  users for now */
 324                                                         pat = ch_strdup( "users" );
 325
 326                                                 } else if ( strcmp( right, ".+" ) == 0
 327                                                         || strcmp( right, "^.+" ) == 0
 328                                                         || strcmp( right, ".+$" ) == 0
 329                                                         || strcmp( right, "^.+$" ) == 0
 330                                                         || strcmp( right, ".+$$" ) == 0
 331                                                         || strcmp( right, "^.+$$" ) == 0 )
 332                                                 {
 333                                                         pat = ch_strdup( "users" );
 334
 335                                                 } else if ( strcmp( right, ".*" ) == 0
 336                                                         || strcmp( right, "^.*" ) == 0
 337                                                         || strcmp( right, ".*$" ) == 0
 338                                                         || strcmp( right, "^.*$" ) == 0
 339                                                         || strcmp( right, ".*$$" ) == 0
 340                                                         || strcmp( right, "^.*$$" ) == 0 )
 341                                                 {
 342                                                         pat = ch_strdup( "*" );
 343
 344                                                 } else {
 345                                                         regtest(fname, lineno, right);
 346                                                         pat = ch_strdup( right );
 347                                                 }
 348                                         } else if ( right == NULL || *right == '\0' ) {
 349                                                 fprintf( stderr,
 350                                                         "%s: line %d: missing \"=\" in (or value after) \"%s\" in by clause\n",
 351                                                     fname, lineno, left );
 352                                                 acl_usage();
 353
 354                                         } else {
 355                                                 pat = ch_strdup( right );
 356                                         }
 357
 358                                 } else {
 359                                         pat = NULL;
 360                                 }
 361
 362                                 if( pat != NULL ) {
 363                                         if( b->a_dn_pat != NULL ) {
 364                                                 fprintf( stderr,
 365                                                     "%s: line %d: dn pattern already specified.\n",
 366                                                     fname, lineno );
 367                                                 acl_usage();
 368                                         }
 369
 370                                         b->a_dn_pat = pat;
 371                                         b->a_dn_style = sty;
 372                                         if ( sty != ACL_STYLE_REGEX )
 373                                                 dn_normalize(pat);
 374                                         continue;
 375                                 }
 376
 377                                 if ( strcasecmp( left, "dnattr" ) == 0 ) {
 378                                         if( b->a_dn_at != NULL ) {
 379                                                 fprintf( stderr,
 380                                                         "%s: line %d: dnattr already specified.\n",
 381                                                         fname, lineno );
 382                                                 acl_usage();
 383                                         }
 384
 385                                         rc = slap_str2ad( right, &b->a_dn_at, &text );
 386
 387                                         if( rc != LDAP_SUCCESS ) {
 388                                                 fprintf( stderr,
 389                                                         "%s: line %d: dnattr \"%s\": %s\n",
 390                                                         fname, lineno, right, text );
 391                                                 acl_usage();
 392                                         }
 393
 394
 395                                         if( !is_at_syntax( b->a_dn_at->ad_type,
 396                                                 SLAPD_DN_SYNTAX ) )
 397                                         {
 398                                                 fprintf( stderr,
 399                                                         "%s: line %d: dnattr \"%s\": "
 400                                                         "inappropriate syntax: %s\n",
 401                                                         fname, lineno, right,
 402                                                         b->a_dn_at->ad_type->sat_syntax_oid );
 403                                                 acl_usage();
 404                                         }
 405
 406                                         continue;
 407                                 }
 408
 409                                 if (sty != ACL_STYLE_REGEX && sty != ACL_STYLE_BASE) {
 410                                         fprintf( stderr,
 411                                                 "%s: line %d: inappropriate style \"%s\" in by clause\n",
 412                                             fname, lineno, style );
 413                                         acl_usage();
 414                                 }
 415
 416                                 if ( strncasecmp( left, "group", sizeof("group")-1 ) == 0 ) {
 417                                         char *name = NULL;
 418                                         char *value = NULL;
 419
 420                                         if( b->a_group_pat != NULL ) {
 421                                                 fprintf( stderr,
 422                                                         "%s: line %d: group pattern already specified.\n",
 423                                                         fname, lineno );
 424                                                 acl_usage();
 425                                         }
 426
 427                                         /* format of string is "group/objectClassValue/groupAttrName" */
 428                                         if ((value = strchr(left, '/')) != NULL) {
 429                                                 *value++ = '\0';
 430                                                 if (*value
 431                                                         && (name = strchr(value, '/')) != NULL)
 432                                                 {
 433                                                         *name++ = '\0';
 434                                                 }
 435                                         }
 436
 437                                         b->a_group_style = sty;
 438                                         if (sty == ACL_STYLE_REGEX) {
 439                                                 regtest(fname, lineno, right);
 440                                                 b->a_group_pat = ch_strdup( right );
 441                                         } else {
 442                                                 b->a_group_pat = ch_strdup( right );
 443                                                 dn_normalize(b->a_group_pat);
 444                                         }
 445
 446                                         if (value && *value) {
 447                                                 b->a_group_oc = oc_find( value );
 448                                                 *--value = '/';
 449
 450                                                 if( b->a_group_oc == NULL ) {
 451                                                         fprintf( stderr,
 452                                                                 "%s: line %d: group objectclass "
 453                                                                 "\"%s\" unknown\n",
 454                                                                 fname, lineno, value );
 455                                                         acl_usage();
 456                                                 }
 457                                         } else {
 458                                                 b->a_group_oc = oc_find(SLAPD_GROUP_CLASS);
 459
 460                                                 if( b->a_group_oc == NULL ) {
 461                                                         fprintf( stderr,
 462                                                                 "%s: line %d: group default objectclass "
 463                                                                 "\"%s\" unknown\n",
 464                                                                 fname, lineno, SLAPD_GROUP_CLASS );
 465                                                         acl_usage();
 466                                                 }
 467                                         }
 468
 469                                         if( is_object_subclass( b->a_group_oc,
 470                                                 slap_schema.si_oc_referral ) )
 471                                         {
 472                                                 fprintf( stderr,
 473                                                         "%s: line %d: group objectclass \"%s\" "
 474                                                         "is subclass of referral\n",
 475                                                         fname, lineno, value );
 476                                                 acl_usage();
 477                                         }
 478
 479                                         if( is_object_subclass( b->a_group_oc,
 480                                                 slap_schema.si_oc_alias ) )
 481                                         {
 482                                                 fprintf( stderr,
 483                                                         "%s: line %d: group objectclass \"%s\" "
 484                                                         "is subclass of alias\n",
 485                                                         fname, lineno, value );
 486                                                 acl_usage();
 487                                         }
 488
 489                                         if (name && *name) {
 490                                                 rc = slap_str2ad( name, &b->a_group_at, &text );
 491
 492                                                 if( rc != LDAP_SUCCESS ) {
 493                                                         fprintf( stderr,
 494                                                                 "%s: line %d: group \"%s\": %s\n",
 495                                                                 fname, lineno, right, text );
 496                                                         acl_usage();
 497                                                 }
 498                                                 *--name = '/';
 499                                         } else {
 500                                                 rc = slap_str2ad( SLAPD_GROUP_ATTR, &b->a_group_at, &text );
 501
 502                                                 if( rc != LDAP_SUCCESS ) {
 503                                                         fprintf( stderr,
 504                                                                 "%s: line %d: group \"%s\": %s\n",
 505                                                                 fname, lineno, SLAPD_GROUP_ATTR, text );
 506                                                         acl_usage();
 507                                                 }
 508                                         }
 509
 510                                         if( !is_at_syntax( b->a_group_at->ad_type,
 511                                                 SLAPD_DN_SYNTAX ) )
 512                                         {
 513                                                 fprintf( stderr,
 514                                                         "%s: line %d: group \"%s\": inappropriate syntax: %s\n",
 515                                                         fname, lineno, right,
 516                                                         b->a_group_at->ad_type->sat_syntax_oid );
 517                                                 acl_usage();
 518                                         }
 519
 520
 521                                         {
 522                                                 int rc;
 523                                                 struct berval val;
 524                                                 struct berval *vals[2];
 525
 526                                                 val.bv_val = b->a_group_oc->soc_oid;
 527                                                 val.bv_len = strlen(val.bv_val);
 528                                                 vals[0] = &val;
 529                                                 vals[1] = NULL;
 530
 531
 532                                                 rc = oc_check_allowed( b->a_group_at->ad_type, vals );
 533
 534                                                 if( rc != 0 ) {
 535                                                         fprintf( stderr,
 536                                                                 "%s: line %d: group: \"%s\" not allowed by \"%s\"\n",
 537                                                                 fname, lineno,
 538                                                                 b->a_group_at->ad_cname->bv_val,
 539                                                                 b->a_group_oc->soc_oid );
 540                                                         acl_usage();
 541                                                 }
 542                                         }
 543                                         continue;
 544                                 }
 545
 546                                 if ( strcasecmp( left, "peername" ) == 0 ) {
 547                                         if( b->a_peername_pat != NULL ) {
 548                                                 fprintf( stderr,
 549                                                         "%s: line %d: peername pattern already specified.\n",
 550                                                         fname, lineno );
 551                                                 acl_usage();
 552                                         }
 553
 554                                         b->a_peername_style = sty;
 555                                         if (sty == ACL_STYLE_REGEX) {
 556                                                 regtest(fname, lineno, right);
 557                                         }
 558                                         b->a_peername_pat = ch_strdup( right );
 559                                         continue;
 560                                 }
 561
 562                                 if ( strcasecmp( left, "sockname" ) == 0 ) {
 563                                         if( b->a_sockname_pat != NULL ) {
 564                                                 fprintf( stderr,
 565                                                         "%s: line %d: sockname pattern already specified.\n",
 566                                                         fname, lineno );
 567                                                 acl_usage();
 568                                         }
 569
 570                                         b->a_sockname_style = sty;
 571                                         if (sty == ACL_STYLE_REGEX) {
 572                                                 regtest(fname, lineno, right);
 573                                         }
 574                                         b->a_sockname_pat = ch_strdup( right );
 575                                         continue;
 576                                 }
 577
 578                                 if ( strcasecmp( left, "domain" ) == 0 ) {
 579                                         if( b->a_domain_pat != NULL ) {
 580                                                 fprintf( stderr,
 581                                                         "%s: line %d: domain pattern already specified.\n",
 582                                                         fname, lineno );
 583                                                 acl_usage();
 584                                         }
 585
 586                                         b->a_domain_style = sty;
 587                                         if (sty == ACL_STYLE_REGEX) {
 588                                                 regtest(fname, lineno, right);
 589                                         }
 590                                         b->a_domain_pat = ch_strdup( right );
 591                                         continue;
 592                                 }
 593
 594                                 if ( strcasecmp( left, "sockurl" ) == 0 ) {
 595                                         if( b->a_sockurl_pat != NULL ) {
 596                                                 fprintf( stderr,
 597                                                         "%s: line %d: sockurl pattern already specified.\n",
 598                                                         fname, lineno );
 599                                                 acl_usage();
 600                                         }
 601
 602                                         b->a_sockurl_style = sty;
 603                                         if (sty == ACL_STYLE_REGEX) {
 604                                                 regtest(fname, lineno, right);
 605                                         }
 606                                         b->a_sockurl_pat = ch_strdup( right );
 607                                         continue;
 608                                 }
 609
 610                                 if ( strcasecmp( left, "set" ) == 0 ) {
 611                                         if( b->a_set_pat != NULL ) {
 612                                                 fprintf( stderr,
 613                                                         "%s: line %d: set attribute already specified.\n",
 614                                                         fname, lineno );
 615                                                 acl_usage();
 616                                         }
 617
 618                                         if ( right == NULL || *right == '\0' ) {
 619                                                 fprintf( stderr,
 620                                                         "%s: line %d: no set is defined\n",
 621                                                         fname, lineno );
 622                                                 acl_usage();
 623                                         }
 624
 625                                         b->a_set_style = sty;
 626                                         b->a_set_pat = ch_strdup(right);
 627
 628                                         continue;
 629                                 }
 630
 631 #ifdef SLAPD_ACI_ENABLED
 632                                 if ( strcasecmp( left, "aci" ) == 0 ) {
 633                                         if( b->a_aci_at != NULL ) {
 634                                                 fprintf( stderr,
 635                                                         "%s: line %d: aci attribute already specified.\n",
 636                                                         fname, lineno );
 637                                                 acl_usage();
 638                                         }
 639
 640                                         if ( right != NULL && *right != '\0' ) {
 641                                                 rc = slap_str2ad( right, &b->a_aci_at, &text );
 642
 643                                                 if( rc != LDAP_SUCCESS ) {
 644                                                         fprintf( stderr,
 645                                                                 "%s: line %d: aci \"%s\": %s\n",
 646                                                                 fname, lineno, right, text );
 647                                                         acl_usage();
 648                                                 }
 649
 650                                         } else {
 651                                                 rc = slap_str2ad( SLAPD_ACI_ATTR, &b->a_aci_at, &text );
 652
 653                                                 if( rc != LDAP_SUCCESS ) {
 654                                                         fprintf( stderr,
 655                                                                 "%s: line %d: aci \"%s\": %s\n",
 656                                                                 fname, lineno, SLAPD_ACI_ATTR, text );
 657                                                         acl_usage();
 658                                                 }
 659                                         }
 660
 661                                         if( !is_at_syntax( b->a_aci_at->ad_type,
 662                                                 SLAPD_ACI_SYNTAX) )
 663                                         {
 664                                                 fprintf( stderr,
 665                                                         "%s: line %d: aci \"%s\": inappropriate syntax: %s\n",
 666                                                         fname, lineno, right,
 667                                                         b->a_aci_at->ad_type->sat_syntax_oid );
 668                                                 acl_usage();
 669                                         }
 670
 671                                         continue;
 672                                 }
 673 #endif /* SLAPD_ACI_ENABLED */
 674
 675                                 if( right != NULL ) {
 676                                         /* unsplit */
 677                                         right[-1] = '=';
 678                                 }
 679                                 break;
 680                         }
 681
 682                         if( i == argc || ( strcasecmp( left, "stop" ) == 0 )) {
 683                                 /* out of arguments or plain stop */
 684
 685                                 ACL_PRIV_ASSIGN(b->a_mask, ACL_PRIV_ADDITIVE);
 686                                 b->a_type = ACL_STOP;
 687
 688                                 access_append( &a->acl_access, b );
 689                                 continue;
 690                         }
 691
 692                         if( strcasecmp( left, "continue" ) == 0 ) {
 693                                 /* plain continue */
 694
 695                                 ACL_PRIV_ASSIGN(b->a_mask, ACL_PRIV_ADDITIVE);
 696                                 b->a_type = ACL_CONTINUE;
 697
 698                                 access_append( &a->acl_access, b );
 699                                 continue;
 700                         }
 701
 702                         if( strcasecmp( left, "break" ) == 0 ) {
 703                                 /* plain continue */
 704
 705                                 ACL_PRIV_ASSIGN(b->a_mask, ACL_PRIV_ADDITIVE);
 706                                 b->a_type = ACL_BREAK;
 707
 708                                 access_append( &a->acl_access, b );
 709                                 continue;
 710                         }
 711
 712                         if ( strcasecmp( left, "by" ) == 0 ) {
 713                                 /* we've gone too far */
 714                                 --i;
 715                                 ACL_PRIV_ASSIGN(b->a_mask, ACL_PRIV_ADDITIVE);
 716                                 b->a_type = ACL_STOP;
 717
 718                                 access_append( &a->acl_access, b );
 719                                 continue;
 720                         }
 721
 722                         /* get <access> */
 723                         if( strncasecmp( left, "self", 4 ) == 0 ) {
 724                                 b->a_dn_self = 1;
 725                                 ACL_PRIV_ASSIGN( b->a_mask, str2accessmask( &left[4] ) );
 726
 727                         } else {
 728                                 ACL_PRIV_ASSIGN( b->a_mask, str2accessmask( left ) );
 729                         }
 730
 731                         if( ACL_IS_INVALID( b->a_mask ) ) {
 732                                 fprintf( stderr,
 733                                         "%s: line %d: expecting <access> got \"%s\"\n",
 734                                         fname, lineno, left );
 735                                 acl_usage();
 736                         }
 737
 738                         b->a_type = ACL_STOP;
 739
 740                         if( ++i == argc ) {
 741                                 /* out of arguments or plain stop */
 742                                 access_append( &a->acl_access, b );
 743                                 continue;
 744                         }
 745
 746                         if( strcasecmp( argv[i], "continue" ) == 0 ) {
 747                                 /* plain continue */
 748                                 b->a_type = ACL_CONTINUE;
 749
 750                         } else if( strcasecmp( argv[i], "break" ) == 0 ) {
 751                                 /* plain continue */
 752                                 b->a_type = ACL_BREAK;
 753
 754                         } else if ( strcasecmp( argv[i], "stop" ) != 0 ) {
 755                                 /* gone to far */
 756                                 i--;
 757                         }
 758
 759                         access_append( &a->acl_access, b );
 760
 761                 } else {
 762                         fprintf( stderr,
 763                     "%s: line %d: expecting \"to\" or \"by\" got \"%s\"\n",
 764                             fname, lineno, argv[i] );
 765                         acl_usage();
 766                 }
 767         }
 768
 769         /* if we have no real access clause, complain and do nothing */
 770         if ( a == NULL ) {
 771                         fprintf( stderr,
 772                                 "%s: line %d: warning: no access clause(s) specified in access line\n",
 773                             fname, lineno );
 774
 775         } else {
 776 #ifdef LDAP_DEBUG
 777                 if (ldap_debug & LDAP_DEBUG_ACL)
 778                         print_acl(be, a);
 779 #endif
 780
 781                 if ( a->acl_access == NULL ) {
 782                         fprintf( stderr,
 783                         "%s: line %d: warning: no by clause(s) specified in access line\n",
 784                             fname, lineno );
 785                 }
 786
 787                 if ( be != NULL ) {
 788                         acl_append( &be->be_acl, a );
 789                 } else {
 790                         acl_append( &global_acl, a );
 791                 }
 792         }
 793 }
 794
 795 char *
 796 accessmask2str( slap_access_mask_t mask, char *buf )
 797 {
 798         int none=1;
 799
 800         assert( buf != NULL );
 801
 802         if ( ACL_IS_INVALID( mask ) ) {
 803                 return "invalid";
 804         }
 805
 806         buf[0] = '\0';
 807
 808         if ( ACL_IS_LEVEL( mask ) ) {
 809                 if ( ACL_LVL_IS_NONE(mask) ) {
 810                         strcat( buf, "none" );
 811
 812                 } else if ( ACL_LVL_IS_AUTH(mask) ) {
 813                         strcat( buf, "auth" );
 814
 815                 } else if ( ACL_LVL_IS_COMPARE(mask) ) {
 816                         strcat( buf, "compare" );
 817
 818                 } else if ( ACL_LVL_IS_SEARCH(mask) ) {
 819                         strcat( buf, "search" );
 820
 821                 } else if ( ACL_LVL_IS_READ(mask) ) {
 822                         strcat( buf, "read" );
 823
 824                 } else if ( ACL_LVL_IS_WRITE(mask) ) {
 825                         strcat( buf, "write" );
 826                 } else {
 827                         strcat( buf, "unknown" );
 828                 }
 829
 830                 strcat(buf, " (");
 831         }
 832
 833         if( ACL_IS_ADDITIVE( mask ) ) {
 834                 strcat( buf, "+" );
 835
 836         } else if( ACL_IS_SUBTRACTIVE( mask ) ) {
 837                 strcat( buf, "-" );
 838
 839         } else {
 840                 strcat( buf, "=" );
 841         }
 842
 843         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_WRITE) ) {
 844                 none = 0;
 845                 strcat( buf, "w" );
 846         }
 847
 848         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_READ) ) {
 849                 none = 0;
 850                 strcat( buf, "r" );
 851         }
 852
 853         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_SEARCH) ) {
 854                 none = 0;
 855                 strcat( buf, "s" );
 856         }
 857
 858         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_COMPARE) ) {
 859                 none = 0;
 860                 strcat( buf, "c" );
 861         }
 862
 863         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_AUTH) ) {
 864                 none = 0;
 865                 strcat( buf, "x" );
 866         }
 867
 868         if ( none && ACL_PRIV_ISSET(mask, ACL_PRIV_NONE) ) {
 869                 none = 0;
 870                 strcat( buf, "n" );
 871         }
 872
 873         if ( none ) {
 874                 strcat( buf, "0" );
 875         }
 876
 877         if ( ACL_IS_LEVEL( mask ) ) {
 878                 strcat(buf, ")");
 879         }
 880         return buf;
 881 }
 882
 883 slap_access_mask_t
 884 str2accessmask( const char *str )
 885 {
 886         slap_access_mask_t      mask;
 887
 888         if( !ASCII_ALPHA(str[0]) ) {
 889                 int i;
 890
 891                 if ( str[0] == '=' ) {
 892                         ACL_INIT(mask);
 893
 894                 } else if( str[0] == '+' ) {
 895                         ACL_PRIV_ASSIGN(mask, ACL_PRIV_ADDITIVE);
 896
 897                 } else if( str[0] == '-' ) {
 898                         ACL_PRIV_ASSIGN(mask, ACL_PRIV_SUBSTRACTIVE);
 899
 900                 } else {
 901                         ACL_INVALIDATE(mask);
 902                         return mask;
 903                 }
 904
 905                 for( i=1; str[i] != '\0'; i++ ) {
 906                         if( TOLOWER(str[i]) == 'w' ) {
 907                                 ACL_PRIV_SET(mask, ACL_PRIV_WRITE);
 908
 909                         } else if( TOLOWER(str[i]) == 'r' ) {
 910                                 ACL_PRIV_SET(mask, ACL_PRIV_READ);
 911
 912                         } else if( TOLOWER(str[i]) == 's' ) {
 913                                 ACL_PRIV_SET(mask, ACL_PRIV_SEARCH);
 914
 915                         } else if( TOLOWER(str[i]) == 'c' ) {
 916                                 ACL_PRIV_SET(mask, ACL_PRIV_COMPARE);
 917
 918                         } else if( TOLOWER(str[i]) == 'x' ) {
 919                                 ACL_PRIV_SET(mask, ACL_PRIV_AUTH);
 920
 921                         } else if( str[i] != '0' ) {
 922                                 ACL_INVALIDATE(mask);
 923                                 return mask;
 924                         }
 925                 }
 926
 927                 return mask;
 928         }
 929
 930         if ( strcasecmp( str, "none" ) == 0 ) {
 931                 ACL_LVL_ASSIGN_NONE(mask);
 932
 933         } else if ( strcasecmp( str, "auth" ) == 0 ) {
 934                 ACL_LVL_ASSIGN_AUTH(mask);
 935
 936         } else if ( strcasecmp( str, "compare" ) == 0 ) {
 937                 ACL_LVL_ASSIGN_COMPARE(mask);
 938
 939         } else if ( strcasecmp( str, "search" ) == 0 ) {
 940                 ACL_LVL_ASSIGN_SEARCH(mask);
 941
 942         } else if ( strcasecmp( str, "read" ) == 0 ) {
 943                 ACL_LVL_ASSIGN_READ(mask);
 944
 945         } else if ( strcasecmp( str, "write" ) == 0 ) {
 946                 ACL_LVL_ASSIGN_WRITE(mask);
 947
 948         } else {
 949                 ACL_INVALIDATE( mask );
 950         }
 951
 952         return mask;
 953 }
 954
 955 static void
 956 acl_usage( void )
 957 {
 958         fprintf( stderr, "\n"
 959                 "<access clause> ::= access to <what> "
 960                                 "[ by <who> <access> <control> ]+ \n"
 961                 "<what> ::= * | [dn=<regex>] [filter=<ldapfilter>] [attrs=<attrlist>]\n"
 962                 "<attrlist> ::= <attr> | <attr> , <attrlist>\n"
 963                 "<attr> ::= <attrname> | entry | children\n"
 964                 "<who> ::= [ * | anonymous | users | self | dn=<regex> ]\n"
 965                         "\t[dnattr=<attrname>]\n"
 966                         "\t[group[/<objectclass>[/<attrname>]]=<regex>]\n"
 967                         "\t[peername=<regex>] [sockname=<regex>]\n"
 968                         "\t[domain=<regex>] [sockurl=<regex>]\n"
 969 #ifdef SLAPD_ACI_ENABLED
 970                         "\t[aci=<attrname>]\n"
 971 #endif
 972                 "<access> ::= [self]{<level>|<priv>}\n"
 973                 "<level> ::= none | auth | compare | search | read | write\n"
 974                 "<priv> ::= {=|+|-}{w|r|s|c|x}+\n"
 975                 "<control> ::= [ stop | continue | break ]\n"
 976                 );
 977         exit( EXIT_FAILURE );
 978 }
 979
 980 static void
 981 split(
 982     char        *line,
 983     int         splitchar,
 984     char        **left,
 985     char        **right
 986 )
 987 {
 988         *left = line;
 989         if ( (*right = strchr( line, splitchar )) != NULL ) {
 990                 *((*right)++) = '\0';
 991         }
 992 }
 993
 994 static void
 995 access_append( Access **l, Access *a )
 996 {
 997         for ( ; *l != NULL; l = &(*l)->a_next )
 998                 ;       /* NULL */
 999
1000         *l = a;
1001 }
1002
1003 void
1004 acl_append( AccessControl **l, AccessControl *a )
1005 {
1006         for ( ; *l != NULL; l = &(*l)->acl_next )
1007                 ;       /* NULL */
1008
1009         *l = a;
1010 }
1011
1012 char *
1013 access2str( slap_access_t access )
1014 {
1015         if ( access == ACL_NONE ) {
1016                 return "none";
1017
1018         } else if ( access == ACL_AUTH ) {
1019                 return "auth";
1020
1021         } else if ( access == ACL_COMPARE ) {
1022                 return "compare";
1023
1024         } else if ( access == ACL_SEARCH ) {
1025                 return "search";
1026
1027         } else if ( access == ACL_READ ) {
1028                 return "read";
1029
1030         } else if ( access == ACL_WRITE ) {
1031                 return "write";
1032         }
1033
1034         return "unknown";
1035 }
1036
1037 slap_access_t
1038 str2access( const char *str )
1039 {
1040         if ( strcasecmp( str, "none" ) == 0 ) {
1041                 return ACL_NONE;
1042
1043         } else if ( strcasecmp( str, "auth" ) == 0 ) {
1044                 return ACL_AUTH;
1045
1046         } else if ( strcasecmp( str, "compare" ) == 0 ) {
1047                 return ACL_COMPARE;
1048
1049         } else if ( strcasecmp( str, "search" ) == 0 ) {
1050                 return ACL_SEARCH;
1051
1052         } else if ( strcasecmp( str, "read" ) == 0 ) {
1053                 return ACL_READ;
1054
1055         } else if ( strcasecmp( str, "write" ) == 0 ) {
1056                 return ACL_WRITE;
1057         }
1058
1059         return( ACL_INVALID_ACCESS );
1060 }
1061
1062 #ifdef LDAP_DEBUG
1063
1064 static char *style_strings[5] = {
1065                         "regex",
1066                         "base",
1067                         "one",
1068                         "subtree",
1069                         "children"
1070                 };
1071
1072
1073 static void
1074 print_access( Access *b )
1075 {
1076         char maskbuf[ACCESSMASK_MAXLEN];
1077
1078         fprintf( stderr, "\tby" );
1079
1080         if ( b->a_dn_pat != NULL ) {
1081                 if( strcmp(b->a_dn_pat, "*") == 0
1082                         || strcmp(b->a_dn_pat, "users") == 0
1083                         || strcmp(b->a_dn_pat, "anonymous") == 0
1084                         || strcmp(b->a_dn_pat, "self") == 0 )
1085                 {
1086                         fprintf( stderr, " %s", b->a_dn_pat );
1087
1088                 } else {
1089                         fprintf( stderr, " dn.%s=%s", style_strings[b->a_dn_style], b->a_dn_pat );
1090                 }
1091         }
1092
1093         if ( b->a_dn_at != NULL ) {
1094                 fprintf( stderr, " dnattr=%s", b->a_dn_at->ad_cname->bv_val );
1095         }
1096
1097         if ( b->a_group_pat != NULL ) {
1098                 fprintf( stderr, " group=%s", b->a_group_pat );
1099
1100                 if ( b->a_group_oc ) {
1101                         fprintf( stderr, " objectClass: %s",
1102                                 b->a_group_oc->soc_oclass.oc_oid );
1103
1104                         if ( b->a_group_at ) {
1105                                 fprintf( stderr, " attributeType: %s", b->a_group_at->ad_cname->bv_val );
1106                         }
1107                 }
1108     }
1109
1110         if ( b->a_peername_pat != NULL ) {
1111                 fprintf( stderr, " peername=%s", b->a_peername_pat );
1112         }
1113
1114         if ( b->a_sockname_pat != NULL ) {
1115                 fprintf( stderr, " sockname=%s", b->a_sockname_pat );
1116         }
1117
1118         if ( b->a_domain_pat != NULL ) {
1119                 fprintf( stderr, " domain=%s", b->a_domain_pat );
1120         }
1121
1122         if ( b->a_sockurl_pat != NULL ) {
1123                 fprintf( stderr, " sockurl=%s", b->a_sockurl_pat );
1124         }
1125
1126 #ifdef SLAPD_ACI_ENABLED
1127         if ( b->a_aci_at != NULL ) {
1128                 fprintf( stderr, " aci=%s", b->a_aci_at->ad_cname->bv_val );
1129         }
1130 #endif
1131
1132         fprintf( stderr, " %s%s",
1133                 b->a_dn_self ? "self" : "",
1134                 accessmask2str( b->a_mask, maskbuf ) );
1135
1136         if( b->a_type == ACL_BREAK ) {
1137                 fprintf( stderr, " break" );
1138
1139         } else if( b->a_type == ACL_CONTINUE ) {
1140                 fprintf( stderr, " continue" );
1141
1142         } else if( b->a_type != ACL_STOP ) {
1143                 fprintf( stderr, " unknown-control" );
1144         }
1145
1146         fprintf( stderr, "\n" );
1147 }
1148
1149
1150 static void
1151 print_acl( Backend *be, AccessControl *a )
1152 {
1153         int             to = 0;
1154         Access  *b;
1155
1156         fprintf( stderr, "%s ACL: access to",
1157                 be == NULL ? "Global" : "Backend" );
1158
1159         if ( a->acl_dn_pat != NULL ) {
1160                 to++;
1161                 fprintf( stderr, " dn.%s=%s\n",
1162                         style_strings[a->acl_dn_style], a->acl_dn_pat );
1163         }
1164
1165         if ( a->acl_filter != NULL ) {
1166                 to++;
1167                 fprintf( stderr, " filter=" );
1168                 filter_print( a->acl_filter );
1169                 fprintf( stderr, "\n" );
1170         }
1171
1172         if ( a->acl_attrs != NULL ) {
1173                 int     i, first = 1;
1174                 to++;
1175
1176                 fprintf( stderr, " attrs=" );
1177                 for ( i = 0; a->acl_attrs[i] != NULL; i++ ) {
1178                         if ( ! first ) {
1179                                 fprintf( stderr, "," );
1180                         }
1181                         fprintf( stderr, a->acl_attrs[i] );
1182                         first = 0;
1183                 }
1184                 fprintf(  stderr, "\n" );
1185         }
1186
1187         if( !to ) {
1188                 fprintf( stderr, " *\n" );
1189         }
1190
1191         for ( b = a->acl_access; b != NULL; b = b->a_next ) {
1192                 print_access( b );
1193         }
1194
1195         fprintf( stderr, "\n" );
1196 }
1197
1198 #endif /* LDAP_DEBUG */