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 0
 470                                         if( is_object_subclass( b->a_group_oc,
 471                                                 slap_schema.si_oc_referral ) )
 472                                         {
 473                                                 fprintf( stderr,
 474                                                         "%s: line %d: group objectclass \"%s\" "
 475                                                         "is subclass of referral\n",
 476                                                         fname, lineno, value );
 477                                                 acl_usage();
 478                                         }
 479
 480                                         if( is_object_subclass( b->a_group_oc,
 481                                                 slap_schema.si_oc_alias ) )
 482                                         {
 483                                                 fprintf( stderr,
 484                                                         "%s: line %d: group objectclass \"%s\" "
 485                                                         "is subclass of alias\n",
 486                                                         fname, lineno, value );
 487                                                 acl_usage();
 488                                         }
 489 #endif
 490
 491                                         if (name && *name) {
 492                                                 rc = slap_str2ad( right, &b->a_group_at, &text );
 493
 494                                                 if( rc != LDAP_SUCCESS ) {
 495                                                         fprintf( stderr,
 496                                                                 "%s: line %d: group \"%s\": %s\n",
 497                                                                 fname, lineno, right, text );
 498                                                         acl_usage();
 499                                                 }
 500                                                 *--name = '/';
 501                                         } else {
 502                                                 rc = slap_str2ad( SLAPD_GROUP_ATTR, &b->a_group_at, &text );
 503
 504                                                 if( rc != LDAP_SUCCESS ) {
 505                                                         fprintf( stderr,
 506                                                                 "%s: line %d: group \"%s\": %s\n",
 507                                                                 fname, lineno, SLAPD_GROUP_ATTR, text );
 508                                                         acl_usage();
 509                                                 }
 510                                         }
 511
 512                                         if( !is_at_syntax( b->a_group_at->ad_type,
 513                                                 SLAPD_DN_SYNTAX ) )
 514                                         {
 515                                                 fprintf( stderr,
 516                                                         "%s: line %d: group \"%s\": inappropriate syntax: %s\n",
 517                                                         fname, lineno, right,
 518                                                         b->a_group_at->ad_type->sat_syntax_oid );
 519                                                 acl_usage();
 520                                         }
 521
 522
 523                                         {
 524                                                 int rc;
 525                                                 struct berval val;
 526                                                 struct berval *vals[2];
 527
 528                                                 val.bv_val = b->a_group_oc->soc_oid;
 529                                                 val.bv_len = strlen(val.bv_val);
 530                                                 vals[0] = &val;
 531                                                 vals[1] = NULL;
 532
 533
 534                                                 rc = oc_check_allowed( b->a_group_at->ad_type, vals );
 535
 536                                                 if( rc != 0 ) {
 537                                                         fprintf( stderr,
 538                                                                 "%s: line %d: group: \"%s\" not allowed by \"%s\"\n",
 539                                                                 fname, lineno,
 540                                                                 b->a_group_at->ad_cname->bv_val,
 541                                                                 b->a_group_oc->soc_oid );
 542                                                         acl_usage();
 543                                                 }
 544                                         }
 545                                         continue;
 546                                 }
 547
 548                                 if ( strcasecmp( left, "peername" ) == 0 ) {
 549                                         if( b->a_peername_pat != NULL ) {
 550                                                 fprintf( stderr,
 551                                                         "%s: line %d: peername pattern already specified.\n",
 552                                                         fname, lineno );
 553                                                 acl_usage();
 554                                         }
 555
 556                                         b->a_peername_style = sty;
 557                                         if (sty == ACL_STYLE_REGEX) {
 558                                                 regtest(fname, lineno, right);
 559                                         }
 560                                         b->a_peername_pat = ch_strdup( right );
 561                                         continue;
 562                                 }
 563
 564                                 if ( strcasecmp( left, "sockname" ) == 0 ) {
 565                                         if( b->a_sockname_pat != NULL ) {
 566                                                 fprintf( stderr,
 567                                                         "%s: line %d: sockname pattern already specified.\n",
 568                                                         fname, lineno );
 569                                                 acl_usage();
 570                                         }
 571
 572                                         b->a_sockname_style = sty;
 573                                         if (sty == ACL_STYLE_REGEX) {
 574                                                 regtest(fname, lineno, right);
 575                                         }
 576                                         b->a_sockname_pat = ch_strdup( right );
 577                                         continue;
 578                                 }
 579
 580                                 if ( strcasecmp( left, "domain" ) == 0 ) {
 581                                         if( b->a_domain_pat != NULL ) {
 582                                                 fprintf( stderr,
 583                                                         "%s: line %d: domain pattern already specified.\n",
 584                                                         fname, lineno );
 585                                                 acl_usage();
 586                                         }
 587
 588                                         b->a_domain_style = sty;
 589                                         if (sty == ACL_STYLE_REGEX) {
 590                                                 regtest(fname, lineno, right);
 591                                         }
 592                                         b->a_domain_pat = ch_strdup( right );
 593                                         continue;
 594                                 }
 595
 596                                 if ( strcasecmp( left, "sockurl" ) == 0 ) {
 597                                         if( b->a_sockurl_pat != NULL ) {
 598                                                 fprintf( stderr,
 599                                                         "%s: line %d: sockurl pattern already specified.\n",
 600                                                         fname, lineno );
 601                                                 acl_usage();
 602                                         }
 603
 604                                         b->a_sockurl_style = sty;
 605                                         if (sty == ACL_STYLE_REGEX) {
 606                                                 regtest(fname, lineno, right);
 607                                         }
 608                                         b->a_sockurl_pat = ch_strdup( right );
 609                                         continue;
 610                                 }
 611
 612 #ifdef SLAPD_ACI_ENABLED
 613                                 if ( strcasecmp( left, "aci" ) == 0 ) {
 614                                         if( b->a_aci_at != NULL ) {
 615                                                 fprintf( stderr,
 616                                                         "%s: line %d: aci attribute already specified.\n",
 617                                                         fname, lineno );
 618                                                 acl_usage();
 619                                         }
 620
 621                                         if ( right != NULL && *right != '\0' ) {
 622                                                 rc = slap_str2ad( right, &b->a_aci_at, &text );
 623
 624                                                 if( rc != LDAP_SUCCESS ) {
 625                                                         fprintf( stderr,
 626                                                                 "%s: line %d: aci \"%s\": %s\n",
 627                                                                 fname, lineno, right, text );
 628                                                         acl_usage();
 629                                                 }
 630
 631                                         } else {
 632                                                 rc = slap_str2ad( SLAPD_ACI_ATTR, &b->a_aci_at, &text );
 633
 634                                                 if( rc != LDAP_SUCCESS ) {
 635                                                         fprintf( stderr,
 636                                                                 "%s: line %d: aci \"%s\": %s\n",
 637                                                                 fname, lineno, SLAPD_ACI_ATTR, text );
 638                                                         acl_usage();
 639                                                 }
 640                                         }
 641
 642                                         if( !is_at_syntax( b->a_aci_at->ad_type,
 643                                                 SLAPD_ACI_SYNTAX) )
 644                                         {
 645                                                 fprintf( stderr,
 646                                                         "%s: line %d: aci \"%s\": inappropriate syntax: %s\n",
 647                                                         fname, lineno, right,
 648                                                         b->a_aci_at->ad_type->sat_syntax_oid );
 649                                                 acl_usage();
 650                                         }
 651
 652                                         continue;
 653                                 }
 654 #endif /* SLAPD_ACI_ENABLED */
 655
 656                                 if( right != NULL ) {
 657                                         /* unsplit */
 658                                         right[-1] = '=';
 659                                 }
 660                                 break;
 661                         }
 662
 663                         if( i == argc || ( strcasecmp( left, "stop" ) == 0 )) {
 664                                 /* out of arguments or plain stop */
 665
 666                                 ACL_PRIV_ASSIGN(b->a_mask, ACL_PRIV_ADDITIVE);
 667                                 b->a_type = ACL_STOP;
 668
 669                                 access_append( &a->acl_access, b );
 670                                 continue;
 671                         }
 672
 673                         if( strcasecmp( left, "continue" ) == 0 ) {
 674                                 /* plain continue */
 675
 676                                 ACL_PRIV_ASSIGN(b->a_mask, ACL_PRIV_ADDITIVE);
 677                                 b->a_type = ACL_CONTINUE;
 678
 679                                 access_append( &a->acl_access, b );
 680                                 continue;
 681                         }
 682
 683                         if( strcasecmp( left, "break" ) == 0 ) {
 684                                 /* plain continue */
 685
 686                                 ACL_PRIV_ASSIGN(b->a_mask, ACL_PRIV_ADDITIVE);
 687                                 b->a_type = ACL_BREAK;
 688
 689                                 access_append( &a->acl_access, b );
 690                                 continue;
 691                         }
 692
 693                         if ( strcasecmp( left, "by" ) == 0 ) {
 694                                 /* we've gone too far */
 695                                 --i;
 696                                 ACL_PRIV_ASSIGN(b->a_mask, ACL_PRIV_ADDITIVE);
 697                                 b->a_type = ACL_STOP;
 698
 699                                 access_append( &a->acl_access, b );
 700                                 continue;
 701                         }
 702
 703                         /* get <access> */
 704                         if( strncasecmp( left, "self", 4 ) == 0 ) {
 705                                 b->a_dn_self = 1;
 706                                 ACL_PRIV_ASSIGN( b->a_mask, str2accessmask( &left[4] ) );
 707
 708                         } else {
 709                                 ACL_PRIV_ASSIGN( b->a_mask, str2accessmask( left ) );
 710                         }
 711
 712                         if( ACL_IS_INVALID( b->a_mask ) ) {
 713                                 fprintf( stderr,
 714                                         "%s: line %d: expecting <access> got \"%s\"\n",
 715                                         fname, lineno, left );
 716                                 acl_usage();
 717                         }
 718
 719                         b->a_type = ACL_STOP;
 720
 721                         if( ++i == argc ) {
 722                                 /* out of arguments or plain stop */
 723                                 access_append( &a->acl_access, b );
 724                                 continue;
 725                         }
 726
 727                         if( strcasecmp( argv[i], "continue" ) == 0 ) {
 728                                 /* plain continue */
 729                                 b->a_type = ACL_CONTINUE;
 730
 731                         } else if( strcasecmp( argv[i], "break" ) == 0 ) {
 732                                 /* plain continue */
 733                                 b->a_type = ACL_BREAK;
 734
 735                         } else if ( strcasecmp( argv[i], "stop" ) != 0 ) {
 736                                 /* gone to far */
 737                                 i--;
 738                         }
 739
 740                         access_append( &a->acl_access, b );
 741
 742                 } else {
 743                         fprintf( stderr,
 744                     "%s: line %d: expecting \"to\" or \"by\" got \"%s\"\n",
 745                             fname, lineno, argv[i] );
 746                         acl_usage();
 747                 }
 748         }
 749
 750         /* if we have no real access clause, complain and do nothing */
 751         if ( a == NULL ) {
 752                         fprintf( stderr,
 753                                 "%s: line %d: warning: no access clause(s) specified in access line\n",
 754                             fname, lineno );
 755
 756         } else {
 757 #ifdef LDAP_DEBUG
 758                 if (ldap_debug & LDAP_DEBUG_ACL)
 759                         print_acl(be, a);
 760 #endif
 761
 762                 if ( a->acl_access == NULL ) {
 763                         fprintf( stderr,
 764                         "%s: line %d: warning: no by clause(s) specified in access line\n",
 765                             fname, lineno );
 766                 }
 767
 768                 if ( be != NULL ) {
 769                         acl_append( &be->be_acl, a );
 770                 } else {
 771                         acl_append( &global_acl, a );
 772                 }
 773         }
 774 }
 775
 776 char *
 777 accessmask2str( slap_access_mask_t mask, char *buf )
 778 {
 779         int none=1;
 780
 781         assert( buf != NULL );
 782
 783         if ( ACL_IS_INVALID( mask ) ) {
 784                 return "invalid";
 785         }
 786
 787         buf[0] = '\0';
 788
 789         if ( ACL_IS_LEVEL( mask ) ) {
 790                 if ( ACL_LVL_IS_NONE(mask) ) {
 791                         strcat( buf, "none" );
 792
 793                 } else if ( ACL_LVL_IS_AUTH(mask) ) {
 794                         strcat( buf, "auth" );
 795
 796                 } else if ( ACL_LVL_IS_COMPARE(mask) ) {
 797                         strcat( buf, "compare" );
 798
 799                 } else if ( ACL_LVL_IS_SEARCH(mask) ) {
 800                         strcat( buf, "search" );
 801
 802                 } else if ( ACL_LVL_IS_READ(mask) ) {
 803                         strcat( buf, "read" );
 804
 805                 } else if ( ACL_LVL_IS_WRITE(mask) ) {
 806                         strcat( buf, "write" );
 807                 } else {
 808                         strcat( buf, "unknown" );
 809                 }
 810
 811                 strcat(buf, " (");
 812         }
 813
 814         if( ACL_IS_ADDITIVE( mask ) ) {
 815                 strcat( buf, "+" );
 816
 817         } else if( ACL_IS_SUBTRACTIVE( mask ) ) {
 818                 strcat( buf, "-" );
 819
 820         } else {
 821                 strcat( buf, "=" );
 822         }
 823
 824         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_WRITE) ) {
 825                 none = 0;
 826                 strcat( buf, "w" );
 827         }
 828
 829         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_READ) ) {
 830                 none = 0;
 831                 strcat( buf, "r" );
 832         }
 833
 834         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_SEARCH) ) {
 835                 none = 0;
 836                 strcat( buf, "s" );
 837         }
 838
 839         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_COMPARE) ) {
 840                 none = 0;
 841                 strcat( buf, "c" );
 842         }
 843
 844         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_AUTH) ) {
 845                 none = 0;
 846                 strcat( buf, "x" );
 847         }
 848
 849         if ( none && ACL_PRIV_ISSET(mask, ACL_PRIV_NONE) ) {
 850                 none = 0;
 851                 strcat( buf, "n" );
 852         }
 853
 854         if ( none ) {
 855                 strcat( buf, "0" );
 856         }
 857
 858         if ( ACL_IS_LEVEL( mask ) ) {
 859                 strcat(buf, ")");
 860         }
 861         return buf;
 862 }
 863
 864 slap_access_mask_t
 865 str2accessmask( const char *str )
 866 {
 867         slap_access_mask_t      mask;
 868
 869         if( !isalpha(str[0]) ) {
 870                 int i;
 871
 872                 if ( str[0] == '=' ) {
 873                         ACL_INIT(mask);
 874
 875                 } else if( str[0] == '+' ) {
 876                         ACL_PRIV_ASSIGN(mask, ACL_PRIV_ADDITIVE);
 877
 878                 } else if( str[0] == '-' ) {
 879                         ACL_PRIV_ASSIGN(mask, ACL_PRIV_SUBSTRACTIVE);
 880
 881                 } else {
 882                         ACL_INVALIDATE(mask);
 883                         return mask;
 884                 }
 885
 886                 for( i=1; str[i] != '\0'; i++ ) {
 887                         if( TOLOWER(str[i]) == 'w' ) {
 888                                 ACL_PRIV_SET(mask, ACL_PRIV_WRITE);
 889
 890                         } else if( TOLOWER(str[i]) == 'r' ) {
 891                                 ACL_PRIV_SET(mask, ACL_PRIV_READ);
 892
 893                         } else if( TOLOWER(str[i]) == 's' ) {
 894                                 ACL_PRIV_SET(mask, ACL_PRIV_SEARCH);
 895
 896                         } else if( TOLOWER(str[i]) == 'c' ) {
 897                                 ACL_PRIV_SET(mask, ACL_PRIV_COMPARE);
 898
 899                         } else if( TOLOWER(str[i]) == 'x' ) {
 900                                 ACL_PRIV_SET(mask, ACL_PRIV_AUTH);
 901
 902                         } else if( str[i] != '0' ) {
 903                                 ACL_INVALIDATE(mask);
 904                                 return mask;
 905                         }
 906                 }
 907
 908                 return mask;
 909         }
 910
 911         if ( strcasecmp( str, "none" ) == 0 ) {
 912                 ACL_LVL_ASSIGN_NONE(mask);
 913
 914         } else if ( strcasecmp( str, "auth" ) == 0 ) {
 915                 ACL_LVL_ASSIGN_AUTH(mask);
 916
 917         } else if ( strcasecmp( str, "compare" ) == 0 ) {
 918                 ACL_LVL_ASSIGN_COMPARE(mask);
 919
 920         } else if ( strcasecmp( str, "search" ) == 0 ) {
 921                 ACL_LVL_ASSIGN_SEARCH(mask);
 922
 923         } else if ( strcasecmp( str, "read" ) == 0 ) {
 924                 ACL_LVL_ASSIGN_READ(mask);
 925
 926         } else if ( strcasecmp( str, "write" ) == 0 ) {
 927                 ACL_LVL_ASSIGN_WRITE(mask);
 928
 929         } else {
 930                 ACL_INVALIDATE( mask );
 931         }
 932
 933         return mask;
 934 }
 935
 936 static void
 937 acl_usage( void )
 938 {
 939         fprintf( stderr, "\n"
 940                 "<access clause> ::= access to <what> "
 941                                 "[ by <who> <access> <control> ]+ \n"
 942                 "<what> ::= * | [dn=<regex>] [filter=<ldapfilter>] [attrs=<attrlist>]\n"
 943                 "<attrlist> ::= <attr> | <attr> , <attrlist>\n"
 944                 "<attr> ::= <attrname> | entry | children\n"
 945                 "<who> ::= [ * | anonymous | users | self | dn=<regex> ]\n"
 946                         "\t[dnattr=<attrname>]\n"
 947                         "\t[group[/<objectclass>[/<attrname>]]=<regex>]\n"
 948                         "\t[peername=<regex>] [sockname=<regex>]\n"
 949                         "\t[domain=<regex>] [sockurl=<regex>]\n"
 950 #ifdef SLAPD_ACI_ENABLED
 951                         "\t[aci=<attrname>]\n"
 952 #endif
 953                 "<access> ::= [self]{<level>|<priv>}\n"
 954                 "<level> ::= none | auth | compare | search | read | write\n"
 955                 "<priv> ::= {=|+|-}{w|r|s|c|x}+\n"
 956                 "<control> ::= [ stop | continue | break ]\n"
 957                 );
 958         exit( EXIT_FAILURE );
 959 }
 960
 961 static void
 962 split(
 963     char        *line,
 964     int         splitchar,
 965     char        **left,
 966     char        **right
 967 )
 968 {
 969         *left = line;
 970         if ( (*right = strchr( line, splitchar )) != NULL ) {
 971                 *((*right)++) = '\0';
 972         }
 973 }
 974
 975 static void
 976 access_append( Access **l, Access *a )
 977 {
 978         for ( ; *l != NULL; l = &(*l)->a_next )
 979                 ;       /* NULL */
 980
 981         *l = a;
 982 }
 983
 984 void
 985 acl_append( AccessControl **l, AccessControl *a )
 986 {
 987         for ( ; *l != NULL; l = &(*l)->acl_next )
 988                 ;       /* NULL */
 989
 990         *l = a;
 991 }
 992
 993 char *
 994 access2str( slap_access_t access )
 995 {
 996         if ( access == ACL_NONE ) {
 997                 return "none";
 998
 999         } else if ( access == ACL_AUTH ) {
1000                 return "auth";
1001
1002         } else if ( access == ACL_COMPARE ) {
1003                 return "compare";
1004
1005         } else if ( access == ACL_SEARCH ) {
1006                 return "search";
1007
1008         } else if ( access == ACL_READ ) {
1009                 return "read";
1010
1011         } else if ( access == ACL_WRITE ) {
1012                 return "write";
1013         }
1014
1015         return "unknown";
1016 }
1017
1018 slap_access_t
1019 str2access( const char *str )
1020 {
1021         if ( strcasecmp( str, "none" ) == 0 ) {
1022                 return ACL_NONE;
1023
1024         } else if ( strcasecmp( str, "auth" ) == 0 ) {
1025                 return ACL_AUTH;
1026
1027         } else if ( strcasecmp( str, "compare" ) == 0 ) {
1028                 return ACL_COMPARE;
1029
1030         } else if ( strcasecmp( str, "search" ) == 0 ) {
1031                 return ACL_SEARCH;
1032
1033         } else if ( strcasecmp( str, "read" ) == 0 ) {
1034                 return ACL_READ;
1035
1036         } else if ( strcasecmp( str, "write" ) == 0 ) {
1037                 return ACL_WRITE;
1038         }
1039
1040         return( ACL_INVALID_ACCESS );
1041 }
1042
1043 #ifdef LDAP_DEBUG
1044
1045 static char *style_strings[5] = {
1046                         "regex",
1047                         "base",
1048                         "one",
1049                         "subtree",
1050                         "children"
1051                 };
1052
1053
1054 static void
1055 print_access( Access *b )
1056 {
1057         char maskbuf[ACCESSMASK_MAXLEN];
1058
1059         fprintf( stderr, "\tby" );
1060
1061         if ( b->a_dn_pat != NULL ) {
1062                 if( strcmp(b->a_dn_pat, "*") == 0
1063                         || strcmp(b->a_dn_pat, "users") == 0
1064                         || strcmp(b->a_dn_pat, "anonymous") == 0
1065                         || strcmp(b->a_dn_pat, "self") == 0 )
1066                 {
1067                         fprintf( stderr, " %s", b->a_dn_pat );
1068
1069                 } else {
1070                         fprintf( stderr, " dn.%s=%s", style_strings[b->a_dn_style], b->a_dn_pat );
1071                 }
1072         }
1073
1074         if ( b->a_dn_at != NULL ) {
1075                 fprintf( stderr, " dnattr=%s", b->a_dn_at->ad_cname->bv_val );
1076         }
1077
1078         if ( b->a_group_pat != NULL ) {
1079                 fprintf( stderr, " group=%s", b->a_group_pat );
1080
1081                 if ( b->a_group_oc ) {
1082                         fprintf( stderr, " objectClass: %s",
1083                                 b->a_group_oc->soc_oclass.oc_oid );
1084
1085                         if ( b->a_group_at ) {
1086                                 fprintf( stderr, " attributeType: %s", b->a_group_at->ad_cname->bv_val );
1087                         }
1088                 }
1089     }
1090
1091         if ( b->a_peername_pat != NULL ) {
1092                 fprintf( stderr, " peername=%s", b->a_peername_pat );
1093         }
1094
1095         if ( b->a_sockname_pat != NULL ) {
1096                 fprintf( stderr, " sockname=%s", b->a_sockname_pat );
1097         }
1098
1099         if ( b->a_domain_pat != NULL ) {
1100                 fprintf( stderr, " domain=%s", b->a_domain_pat );
1101         }
1102
1103         if ( b->a_sockurl_pat != NULL ) {
1104                 fprintf( stderr, " sockurl=%s", b->a_sockurl_pat );
1105         }
1106
1107 #ifdef SLAPD_ACI_ENABLED
1108         if ( b->a_aci_at != NULL ) {
1109                 fprintf( stderr, " aci=%s", b->a_aci_at->ad_cname->bv_val );
1110         }
1111 #endif
1112
1113         fprintf( stderr, " %s%s",
1114                 b->a_dn_self ? "self" : "",
1115                 accessmask2str( b->a_mask, maskbuf ) );
1116
1117         if( b->a_type == ACL_BREAK ) {
1118                 fprintf( stderr, " break" );
1119
1120         } else if( b->a_type == ACL_CONTINUE ) {
1121                 fprintf( stderr, " continue" );
1122
1123         } else if( b->a_type != ACL_STOP ) {
1124                 fprintf( stderr, " unknown-control" );
1125         }
1126
1127         fprintf( stderr, "\n" );
1128 }
1129
1130
1131 static void
1132 print_acl( Backend *be, AccessControl *a )
1133 {
1134         int             to = 0;
1135         Access  *b;
1136
1137         fprintf( stderr, "%s ACL: access to",
1138                 be == NULL ? "Global" : "Backend" );
1139
1140         if ( a->acl_dn_pat != NULL ) {
1141                 to++;
1142                 fprintf( stderr, " dn.%s=%s\n",
1143                         style_strings[a->acl_dn_style], a->acl_dn_pat );
1144         }
1145
1146         if ( a->acl_filter != NULL ) {
1147                 to++;
1148                 fprintf( stderr, " filter=" );
1149                 filter_print( a->acl_filter );
1150                 fprintf( stderr, "\n" );
1151         }
1152
1153         if ( a->acl_attrs != NULL ) {
1154                 int     i, first = 1;
1155                 to++;
1156
1157                 fprintf( stderr, " attrs=" );
1158                 for ( i = 0; a->acl_attrs[i] != NULL; i++ ) {
1159                         if ( ! first ) {
1160                                 fprintf( stderr, "," );
1161                         }
1162                         fprintf( stderr, a->acl_attrs[i] );
1163                         first = 0;
1164                 }
1165                 fprintf(  stderr, "\n" );
1166         }
1167
1168         if( !to ) {
1169                 fprintf( stderr, " *\n" );
1170         }
1171
1172         for ( b = a->acl_access; b != NULL; b = b->a_next ) {
1173                 print_access( b );
1174         }
1175
1176         fprintf( stderr, "\n" );
1177 }
1178
1179 #endif /* LDAP_DEBUG */