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_BASE;
 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( right, &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 #ifdef SLAPD_ACI_ENABLED
 611                                 if ( strcasecmp( left, "aci" ) == 0 ) {
 612                                         if( b->a_aci_at != NULL ) {
 613                                                 fprintf( stderr,
 614                                                         "%s: line %d: aci attribute already specified.\n",
 615                                                         fname, lineno );
 616                                                 acl_usage();
 617                                         }
 618
 619                                         if ( right != NULL && *right != '\0' ) {
 620                                                 rc = slap_str2ad( right, &b->a_aci_at, &text );
 621
 622                                                 if( rc != LDAP_SUCCESS ) {
 623                                                         fprintf( stderr,
 624                                                                 "%s: line %d: aci \"%s\": %s\n",
 625                                                                 fname, lineno, right, text );
 626                                                         acl_usage();
 627                                                 }
 628
 629                                         } else {
 630                                                 rc = slap_str2ad( SLAPD_ACI_ATTR, &b->a_aci_at, &text );
 631
 632                                                 if( rc != LDAP_SUCCESS ) {
 633                                                         fprintf( stderr,
 634                                                                 "%s: line %d: aci \"%s\": %s\n",
 635                                                                 fname, lineno, SLAPD_ACI_ATTR, text );
 636                                                         acl_usage();
 637                                                 }
 638                                         }
 639
 640                                         if( !is_at_syntax( b->a_aci_at->ad_type,
 641                                                 SLAPD_ACI_SYNTAX) )
 642                                         {
 643                                                 fprintf( stderr,
 644                                                         "%s: line %d: aci \"%s\": inappropriate syntax: %s\n",
 645                                                         fname, lineno, right,
 646                                                         b->a_aci_at->ad_type->sat_syntax_oid );
 647                                                 acl_usage();
 648                                         }
 649
 650                                         continue;
 651                                 }
 652 #endif /* SLAPD_ACI_ENABLED */
 653
 654                                 if( right != NULL ) {
 655                                         /* unsplit */
 656                                         right[-1] = '=';
 657                                 }
 658                                 break;
 659                         }
 660
 661                         if( i == argc || ( strcasecmp( left, "stop" ) == 0 )) {
 662                                 /* out of arguments or plain stop */
 663
 664                                 ACL_PRIV_ASSIGN(b->a_mask, ACL_PRIV_ADDITIVE);
 665                                 b->a_type = ACL_STOP;
 666
 667                                 access_append( &a->acl_access, b );
 668                                 continue;
 669                         }
 670
 671                         if( strcasecmp( left, "continue" ) == 0 ) {
 672                                 /* plain continue */
 673
 674                                 ACL_PRIV_ASSIGN(b->a_mask, ACL_PRIV_ADDITIVE);
 675                                 b->a_type = ACL_CONTINUE;
 676
 677                                 access_append( &a->acl_access, b );
 678                                 continue;
 679                         }
 680
 681                         if( strcasecmp( left, "break" ) == 0 ) {
 682                                 /* plain continue */
 683
 684                                 ACL_PRIV_ASSIGN(b->a_mask, ACL_PRIV_ADDITIVE);
 685                                 b->a_type = ACL_BREAK;
 686
 687                                 access_append( &a->acl_access, b );
 688                                 continue;
 689                         }
 690
 691                         if ( strcasecmp( left, "by" ) == 0 ) {
 692                                 /* we've gone too far */
 693                                 --i;
 694                                 ACL_PRIV_ASSIGN(b->a_mask, ACL_PRIV_ADDITIVE);
 695                                 b->a_type = ACL_STOP;
 696
 697                                 access_append( &a->acl_access, b );
 698                                 continue;
 699                         }
 700
 701                         /* get <access> */
 702                         if( strncasecmp( left, "self", 4 ) == 0 ) {
 703                                 b->a_dn_self = 1;
 704                                 ACL_PRIV_ASSIGN( b->a_mask, str2accessmask( &left[4] ) );
 705
 706                         } else {
 707                                 ACL_PRIV_ASSIGN( b->a_mask, str2accessmask( left ) );
 708                         }
 709
 710                         if( ACL_IS_INVALID( b->a_mask ) ) {
 711                                 fprintf( stderr,
 712                                         "%s: line %d: expecting <access> got \"%s\"\n",
 713                                         fname, lineno, left );
 714                                 acl_usage();
 715                         }
 716
 717                         b->a_type = ACL_STOP;
 718
 719                         if( ++i == argc ) {
 720                                 /* out of arguments or plain stop */
 721                                 access_append( &a->acl_access, b );
 722                                 continue;
 723                         }
 724
 725                         if( strcasecmp( argv[i], "continue" ) == 0 ) {
 726                                 /* plain continue */
 727                                 b->a_type = ACL_CONTINUE;
 728
 729                         } else if( strcasecmp( argv[i], "break" ) == 0 ) {
 730                                 /* plain continue */
 731                                 b->a_type = ACL_BREAK;
 732
 733                         } else if ( strcasecmp( argv[i], "stop" ) != 0 ) {
 734                                 /* gone to far */
 735                                 i--;
 736                         }
 737
 738                         access_append( &a->acl_access, b );
 739
 740                 } else {
 741                         fprintf( stderr,
 742                     "%s: line %d: expecting \"to\" or \"by\" got \"%s\"\n",
 743                             fname, lineno, argv[i] );
 744                         acl_usage();
 745                 }
 746         }
 747
 748         /* if we have no real access clause, complain and do nothing */
 749         if ( a == NULL ) {
 750                         fprintf( stderr,
 751                                 "%s: line %d: warning: no access clause(s) specified in access line\n",
 752                             fname, lineno );
 753
 754         } else {
 755 #ifdef LDAP_DEBUG
 756                 if (ldap_debug & LDAP_DEBUG_ACL)
 757                         print_acl(be, a);
 758 #endif
 759
 760                 if ( a->acl_access == NULL ) {
 761                         fprintf( stderr,
 762                         "%s: line %d: warning: no by clause(s) specified in access line\n",
 763                             fname, lineno );
 764                 }
 765
 766                 if ( be != NULL ) {
 767                         acl_append( &be->be_acl, a );
 768                 } else {
 769                         acl_append( &global_acl, a );
 770                 }
 771         }
 772 }
 773
 774 char *
 775 accessmask2str( slap_access_mask_t mask, char *buf )
 776 {
 777         int none=1;
 778
 779         assert( buf != NULL );
 780
 781         if ( ACL_IS_INVALID( mask ) ) {
 782                 return "invalid";
 783         }
 784
 785         buf[0] = '\0';
 786
 787         if ( ACL_IS_LEVEL( mask ) ) {
 788                 if ( ACL_LVL_IS_NONE(mask) ) {
 789                         strcat( buf, "none" );
 790
 791                 } else if ( ACL_LVL_IS_AUTH(mask) ) {
 792                         strcat( buf, "auth" );
 793
 794                 } else if ( ACL_LVL_IS_COMPARE(mask) ) {
 795                         strcat( buf, "compare" );
 796
 797                 } else if ( ACL_LVL_IS_SEARCH(mask) ) {
 798                         strcat( buf, "search" );
 799
 800                 } else if ( ACL_LVL_IS_READ(mask) ) {
 801                         strcat( buf, "read" );
 802
 803                 } else if ( ACL_LVL_IS_WRITE(mask) ) {
 804                         strcat( buf, "write" );
 805                 } else {
 806                         strcat( buf, "unknown" );
 807                 }
 808
 809                 strcat(buf, " (");
 810         }
 811
 812         if( ACL_IS_ADDITIVE( mask ) ) {
 813                 strcat( buf, "+" );
 814
 815         } else if( ACL_IS_SUBTRACTIVE( mask ) ) {
 816                 strcat( buf, "-" );
 817
 818         } else {
 819                 strcat( buf, "=" );
 820         }
 821
 822         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_WRITE) ) {
 823                 none = 0;
 824                 strcat( buf, "w" );
 825         }
 826
 827         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_READ) ) {
 828                 none = 0;
 829                 strcat( buf, "r" );
 830         }
 831
 832         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_SEARCH) ) {
 833                 none = 0;
 834                 strcat( buf, "s" );
 835         }
 836
 837         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_COMPARE) ) {
 838                 none = 0;
 839                 strcat( buf, "c" );
 840         }
 841
 842         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_AUTH) ) {
 843                 none = 0;
 844                 strcat( buf, "x" );
 845         }
 846
 847         if ( none && ACL_PRIV_ISSET(mask, ACL_PRIV_NONE) ) {
 848                 none = 0;
 849                 strcat( buf, "n" );
 850         }
 851
 852         if ( none ) {
 853                 strcat( buf, "0" );
 854         }
 855
 856         if ( ACL_IS_LEVEL( mask ) ) {
 857                 strcat(buf, ")");
 858         }
 859         return buf;
 860 }
 861
 862 slap_access_mask_t
 863 str2accessmask( const char *str )
 864 {
 865         slap_access_mask_t      mask;
 866
 867         if( !ASCII_ALPHA(str[0]) ) {
 868                 int i;
 869
 870                 if ( str[0] == '=' ) {
 871                         ACL_INIT(mask);
 872
 873                 } else if( str[0] == '+' ) {
 874                         ACL_PRIV_ASSIGN(mask, ACL_PRIV_ADDITIVE);
 875
 876                 } else if( str[0] == '-' ) {
 877                         ACL_PRIV_ASSIGN(mask, ACL_PRIV_SUBSTRACTIVE);
 878
 879                 } else {
 880                         ACL_INVALIDATE(mask);
 881                         return mask;
 882                 }
 883
 884                 for( i=1; str[i] != '\0'; i++ ) {
 885                         if( TOLOWER(str[i]) == 'w' ) {
 886                                 ACL_PRIV_SET(mask, ACL_PRIV_WRITE);
 887
 888                         } else if( TOLOWER(str[i]) == 'r' ) {
 889                                 ACL_PRIV_SET(mask, ACL_PRIV_READ);
 890
 891                         } else if( TOLOWER(str[i]) == 's' ) {
 892                                 ACL_PRIV_SET(mask, ACL_PRIV_SEARCH);
 893
 894                         } else if( TOLOWER(str[i]) == 'c' ) {
 895                                 ACL_PRIV_SET(mask, ACL_PRIV_COMPARE);
 896
 897                         } else if( TOLOWER(str[i]) == 'x' ) {
 898                                 ACL_PRIV_SET(mask, ACL_PRIV_AUTH);
 899
 900                         } else if( str[i] != '0' ) {
 901                                 ACL_INVALIDATE(mask);
 902                                 return mask;
 903                         }
 904                 }
 905
 906                 return mask;
 907         }
 908
 909         if ( strcasecmp( str, "none" ) == 0 ) {
 910                 ACL_LVL_ASSIGN_NONE(mask);
 911
 912         } else if ( strcasecmp( str, "auth" ) == 0 ) {
 913                 ACL_LVL_ASSIGN_AUTH(mask);
 914
 915         } else if ( strcasecmp( str, "compare" ) == 0 ) {
 916                 ACL_LVL_ASSIGN_COMPARE(mask);
 917
 918         } else if ( strcasecmp( str, "search" ) == 0 ) {
 919                 ACL_LVL_ASSIGN_SEARCH(mask);
 920
 921         } else if ( strcasecmp( str, "read" ) == 0 ) {
 922                 ACL_LVL_ASSIGN_READ(mask);
 923
 924         } else if ( strcasecmp( str, "write" ) == 0 ) {
 925                 ACL_LVL_ASSIGN_WRITE(mask);
 926
 927         } else {
 928                 ACL_INVALIDATE( mask );
 929         }
 930
 931         return mask;
 932 }
 933
 934 static void
 935 acl_usage( void )
 936 {
 937         fprintf( stderr, "\n"
 938                 "<access clause> ::= access to <what> "
 939                                 "[ by <who> <access> <control> ]+ \n"
 940                 "<what> ::= * | [dn=<regex>] [filter=<ldapfilter>] [attrs=<attrlist>]\n"
 941                 "<attrlist> ::= <attr> | <attr> , <attrlist>\n"
 942                 "<attr> ::= <attrname> | entry | children\n"
 943                 "<who> ::= [ * | anonymous | users | self | dn=<regex> ]\n"
 944                         "\t[dnattr=<attrname>]\n"
 945                         "\t[group[/<objectclass>[/<attrname>]]=<regex>]\n"
 946                         "\t[peername=<regex>] [sockname=<regex>]\n"
 947                         "\t[domain=<regex>] [sockurl=<regex>]\n"
 948 #ifdef SLAPD_ACI_ENABLED
 949                         "\t[aci=<attrname>]\n"
 950 #endif
 951                 "<access> ::= [self]{<level>|<priv>}\n"
 952                 "<level> ::= none | auth | compare | search | read | write\n"
 953                 "<priv> ::= {=|+|-}{w|r|s|c|x}+\n"
 954                 "<control> ::= [ stop | continue | break ]\n"
 955                 );
 956         exit( EXIT_FAILURE );
 957 }
 958
 959 static void
 960 split(
 961     char        *line,
 962     int         splitchar,
 963     char        **left,
 964     char        **right
 965 )
 966 {
 967         *left = line;
 968         if ( (*right = strchr( line, splitchar )) != NULL ) {
 969                 *((*right)++) = '\0';
 970         }
 971 }
 972
 973 static void
 974 access_append( Access **l, Access *a )
 975 {
 976         for ( ; *l != NULL; l = &(*l)->a_next )
 977                 ;       /* NULL */
 978
 979         *l = a;
 980 }
 981
 982 void
 983 acl_append( AccessControl **l, AccessControl *a )
 984 {
 985         for ( ; *l != NULL; l = &(*l)->acl_next )
 986                 ;       /* NULL */
 987
 988         *l = a;
 989 }
 990
 991 char *
 992 access2str( slap_access_t access )
 993 {
 994         if ( access == ACL_NONE ) {
 995                 return "none";
 996
 997         } else if ( access == ACL_AUTH ) {
 998                 return "auth";
 999
1000         } else if ( access == ACL_COMPARE ) {
1001                 return "compare";
1002
1003         } else if ( access == ACL_SEARCH ) {
1004                 return "search";
1005
1006         } else if ( access == ACL_READ ) {
1007                 return "read";
1008
1009         } else if ( access == ACL_WRITE ) {
1010                 return "write";
1011         }
1012
1013         return "unknown";
1014 }
1015
1016 slap_access_t
1017 str2access( const char *str )
1018 {
1019         if ( strcasecmp( str, "none" ) == 0 ) {
1020                 return ACL_NONE;
1021
1022         } else if ( strcasecmp( str, "auth" ) == 0 ) {
1023                 return ACL_AUTH;
1024
1025         } else if ( strcasecmp( str, "compare" ) == 0 ) {
1026                 return ACL_COMPARE;
1027
1028         } else if ( strcasecmp( str, "search" ) == 0 ) {
1029                 return ACL_SEARCH;
1030
1031         } else if ( strcasecmp( str, "read" ) == 0 ) {
1032                 return ACL_READ;
1033
1034         } else if ( strcasecmp( str, "write" ) == 0 ) {
1035                 return ACL_WRITE;
1036         }
1037
1038         return( ACL_INVALID_ACCESS );
1039 }
1040
1041 #ifdef LDAP_DEBUG
1042
1043 static char *style_strings[5] = {
1044                         "regex",
1045                         "base",
1046                         "one",
1047                         "subtree",
1048                         "children"
1049                 };
1050
1051
1052 static void
1053 print_access( Access *b )
1054 {
1055         char maskbuf[ACCESSMASK_MAXLEN];
1056
1057         fprintf( stderr, "\tby" );
1058
1059         if ( b->a_dn_pat != NULL ) {
1060                 if( strcmp(b->a_dn_pat, "*") == 0
1061                         || strcmp(b->a_dn_pat, "users") == 0
1062                         || strcmp(b->a_dn_pat, "anonymous") == 0
1063                         || strcmp(b->a_dn_pat, "self") == 0 )
1064                 {
1065                         fprintf( stderr, " %s", b->a_dn_pat );
1066
1067                 } else {
1068                         fprintf( stderr, " dn.%s=%s", style_strings[b->a_dn_style], b->a_dn_pat );
1069                 }
1070         }
1071
1072         if ( b->a_dn_at != NULL ) {
1073                 fprintf( stderr, " dnattr=%s", b->a_dn_at->ad_cname->bv_val );
1074         }
1075
1076         if ( b->a_group_pat != NULL ) {
1077                 fprintf( stderr, " group=%s", b->a_group_pat );
1078
1079                 if ( b->a_group_oc ) {
1080                         fprintf( stderr, " objectClass: %s",
1081                                 b->a_group_oc->soc_oclass.oc_oid );
1082
1083                         if ( b->a_group_at ) {
1084                                 fprintf( stderr, " attributeType: %s", b->a_group_at->ad_cname->bv_val );
1085                         }
1086                 }
1087     }
1088
1089         if ( b->a_peername_pat != NULL ) {
1090                 fprintf( stderr, " peername=%s", b->a_peername_pat );
1091         }
1092
1093         if ( b->a_sockname_pat != NULL ) {
1094                 fprintf( stderr, " sockname=%s", b->a_sockname_pat );
1095         }
1096
1097         if ( b->a_domain_pat != NULL ) {
1098                 fprintf( stderr, " domain=%s", b->a_domain_pat );
1099         }
1100
1101         if ( b->a_sockurl_pat != NULL ) {
1102                 fprintf( stderr, " sockurl=%s", b->a_sockurl_pat );
1103         }
1104
1105 #ifdef SLAPD_ACI_ENABLED
1106         if ( b->a_aci_at != NULL ) {
1107                 fprintf( stderr, " aci=%s", b->a_aci_at->ad_cname->bv_val );
1108         }
1109 #endif
1110
1111         fprintf( stderr, " %s%s",
1112                 b->a_dn_self ? "self" : "",
1113                 accessmask2str( b->a_mask, maskbuf ) );
1114
1115         if( b->a_type == ACL_BREAK ) {
1116                 fprintf( stderr, " break" );
1117
1118         } else if( b->a_type == ACL_CONTINUE ) {
1119                 fprintf( stderr, " continue" );
1120
1121         } else if( b->a_type != ACL_STOP ) {
1122                 fprintf( stderr, " unknown-control" );
1123         }
1124
1125         fprintf( stderr, "\n" );
1126 }
1127
1128
1129 static void
1130 print_acl( Backend *be, AccessControl *a )
1131 {
1132         int             to = 0;
1133         Access  *b;
1134
1135         fprintf( stderr, "%s ACL: access to",
1136                 be == NULL ? "Global" : "Backend" );
1137
1138         if ( a->acl_dn_pat != NULL ) {
1139                 to++;
1140                 fprintf( stderr, " dn.%s=%s\n",
1141                         style_strings[a->acl_dn_style], a->acl_dn_pat );
1142         }
1143
1144         if ( a->acl_filter != NULL ) {
1145                 to++;
1146                 fprintf( stderr, " filter=" );
1147                 filter_print( a->acl_filter );
1148                 fprintf( stderr, "\n" );
1149         }
1150
1151         if ( a->acl_attrs != NULL ) {
1152                 int     i, first = 1;
1153                 to++;
1154
1155                 fprintf( stderr, " attrs=" );
1156                 for ( i = 0; a->acl_attrs[i] != NULL; i++ ) {
1157                         if ( ! first ) {
1158                                 fprintf( stderr, "," );
1159                         }
1160                         fprintf( stderr, a->acl_attrs[i] );
1161                         first = 0;
1162                 }
1163                 fprintf(  stderr, "\n" );
1164         }
1165
1166         if( !to ) {
1167                 fprintf( stderr, " *\n" );
1168         }
1169
1170         for ( b = a->acl_access; b != NULL; b = b->a_next ) {
1171                 print_access( b );
1172         }
1173
1174         fprintf( stderr, "\n" );
1175 }
1176
1177 #endif /* LDAP_DEBUG */