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_access_mask );
 262
 263                         if ( ++i == argc ) {
 264                                 fprintf( stderr,
 265                             "%s: line %d: premature eol: expecting <who>\n",
 266                                     fname, lineno );
 267                                 acl_usage();
 268                         }
 269
 270                         /* get <who> */
 271                         for ( ; i < argc; i++ ) {
 272                                 char *pat;
 273                                 slap_style_t sty = ACL_STYLE_REGEX;
 274
 275                                 split( argv[i], '=', &left, &right );
 276                                 split( left, '.', &left, &style );
 277                                 if ( style == NULL || *style == '\0'
 278                                         || strcasecmp( style, "regex" ) == 0 )
 279                                 {
 280                                         sty = ACL_STYLE_REGEX;
 281                                 } else if ( strcasecmp( style, "exact" ) == 0 ) {
 282                                         sty = ACL_STYLE_EXACT;
 283                                 } else if ( strcasecmp( style, "base" ) == 0 ) {
 284                                         sty = ACL_STYLE_BASE;
 285                                 } else if ( strcasecmp( style, "one" ) == 0 ) {
 286                                         sty = ACL_STYLE_ONE;
 287                                 } else if ( strcasecmp( style, "subtree" ) == 0 ) {
 288                                         sty = ACL_STYLE_SUBTREE;
 289                                 } else if ( strcasecmp( style, "children" ) == 0 ) {
 290                                         sty = ACL_STYLE_CHILDREN;
 291                                 } else {
 292                                         fprintf( stderr,
 293                                                 "%s: line %d: unknown style \"%s\" in by clause\n",
 294                                             fname, lineno, style );
 295                                         acl_usage();
 296                                 }
 297
 298                                 if ( strcasecmp( argv[i], "*" ) == 0 ) {
 299                                         pat = ch_strdup( "*" );
 300
 301                                 } else if ( strcasecmp( argv[i], "anonymous" ) == 0 ) {
 302                                         pat = ch_strdup( "anonymous" );
 303
 304                                 } else if ( strcasecmp( argv[i], "self" ) == 0 ) {
 305                                         pat = ch_strdup( "self" );
 306
 307                                 } else if ( strcasecmp( argv[i], "users" ) == 0 ) {
 308                                         pat = ch_strdup( "users" );
 309
 310                                 } else if ( strcasecmp( left, "dn" ) == 0 ) {
 311                                         if ( sty == ACL_STYLE_REGEX ) {
 312                                                 b->a_dn_style = ACL_STYLE_REGEX;
 313                                                 if( right == NULL ) {
 314                                                         /* no '=' */
 315                                                         pat = ch_strdup( "users" );
 316
 317                                                 } else if (*right == '\0' ) {
 318                                                         /* dn="" */
 319                                                         pat = ch_strdup( "anonymous" );
 320
 321                                                 } else if ( strcmp( right, "*" ) == 0 ) {
 322                                                         /* dn=* */
 323                                                         /* any or users?  users for now */
 324                                                         pat = ch_strdup( "users" );
 325
 326                                                 } else if ( strcmp( right, ".+" ) == 0
 327                                                         || strcmp( right, "^.+" ) == 0
 328                                                         || strcmp( right, ".+$" ) == 0
 329                                                         || strcmp( right, "^.+$" ) == 0
 330                                                         || strcmp( right, ".+$$" ) == 0
 331                                                         || strcmp( right, "^.+$$" ) == 0 )
 332                                                 {
 333                                                         pat = ch_strdup( "users" );
 334
 335                                                 } else if ( strcmp( right, ".*" ) == 0
 336                                                         || strcmp( right, "^.*" ) == 0
 337                                                         || strcmp( right, ".*$" ) == 0
 338                                                         || strcmp( right, "^.*$" ) == 0
 339                                                         || strcmp( right, ".*$$" ) == 0
 340                                                         || strcmp( right, "^.*$$" ) == 0 )
 341                                                 {
 342                                                         pat = ch_strdup( "*" );
 343
 344                                                 } else {
 345                                                         regtest(fname, lineno, right);
 346                                                         pat = ch_strdup( right );
 347                                                 }
 348                                         } else if ( right == NULL || *right == '\0' ) {
 349                                                 fprintf( stderr,
 350                                                         "%s: line %d: missing \"=\" in (or value after) \"%s\" in by clause\n",
 351                                                     fname, lineno, left );
 352                                                 acl_usage();
 353
 354                                         } else {
 355                                                 pat = ch_strdup( right );
 356                                         }
 357
 358                                 } else {
 359                                         pat = NULL;
 360                                 }
 361
 362                                 if( pat != NULL ) {
 363                                         if( b->a_dn_pat != NULL ) {
 364                                                 fprintf( stderr,
 365                                                     "%s: line %d: dn pattern already specified.\n",
 366                                                     fname, lineno );
 367                                                 acl_usage();
 368                                         }
 369
 370                                         b->a_dn_pat = pat;
 371                                         b->a_dn_style = sty;
 372                                         if ( sty != ACL_STYLE_REGEX )
 373                                                 dn_normalize(pat);
 374                                         continue;
 375                                 }
 376
 377                                 if ( strcasecmp( left, "dnattr" ) == 0 ) {
 378                                         if( b->a_dn_at != NULL ) {
 379                                                 fprintf( stderr,
 380                                                         "%s: line %d: dnattr already specified.\n",
 381                                                         fname, lineno );
 382                                                 acl_usage();
 383                                         }
 384
 385                                         rc = slap_str2ad( right, &b->a_dn_at, &text );
 386
 387                                         if( rc != LDAP_SUCCESS ) {
 388                                                 fprintf( stderr,
 389                                                         "%s: line %d: dnattr \"%s\": %s\n",
 390                                                         fname, lineno, right, text );
 391                                                 acl_usage();
 392                                         }
 393
 394
 395                                         if( !is_at_syntax( b->a_dn_at->ad_type,
 396                                                 SLAPD_DN_SYNTAX ) )
 397                                         {
 398                                                 fprintf( stderr,
 399                                                         "%s: line %d: dnattr \"%s\": "
 400                                                         "inappropriate syntax: %s\n",
 401                                                         fname, lineno, right,
 402                                                         b->a_dn_at->ad_type->sat_syntax_oid );
 403                                                 acl_usage();
 404                                         }
 405
 406                                         continue;
 407                                 }
 408
 409                                 if (sty != ACL_STYLE_REGEX && sty != ACL_STYLE_BASE) {
 410                                         fprintf( stderr,
 411                                                 "%s: line %d: inappropriate style \"%s\" in by clause\n",
 412                                             fname, lineno, style );
 413                                         acl_usage();
 414                                 }
 415
 416                                 if ( strncasecmp( left, "group", sizeof("group")-1 ) == 0 ) {
 417                                         char *name = NULL;
 418                                         char *value = NULL;
 419
 420                                         if( b->a_group_pat != NULL ) {
 421                                                 fprintf( stderr,
 422                                                         "%s: line %d: group pattern already specified.\n",
 423                                                         fname, lineno );
 424                                                 acl_usage();
 425                                         }
 426
 427                                         /* format of string is "group/objectClassValue/groupAttrName" */
 428                                         if ((value = strchr(left, '/')) != NULL) {
 429                                                 *value++ = '\0';
 430                                                 if (*value
 431                                                         && (name = strchr(value, '/')) != NULL)
 432                                                 {
 433                                                         *name++ = '\0';
 434                                                 }
 435                                         }
 436
 437                                         b->a_group_style = sty;
 438                                         if (sty == ACL_STYLE_REGEX) {
 439                                                 regtest(fname, lineno, right);
 440                                                 b->a_group_pat = ch_strdup( right );
 441                                         } else {
 442                                                 b->a_group_pat = ch_strdup( right );
 443                                                 dn_normalize(b->a_group_pat);
 444                                         }
 445
 446                                         if (value && *value) {
 447                                                 b->a_group_oc = oc_find( value );
 448                                                 *--value = '/';
 449
 450                                                 if( b->a_group_oc == NULL ) {
 451                                                         fprintf( stderr,
 452                                                                 "%s: line %d: group objectclass "
 453                                                                 "\"%s\" unknown\n",
 454                                                                 fname, lineno, value );
 455                                                         acl_usage();
 456                                                 }
 457                                         } else {
 458                                                 b->a_group_oc = oc_find(SLAPD_GROUP_CLASS);
 459
 460                                                 if( b->a_group_oc == NULL ) {
 461                                                         fprintf( stderr,
 462                                                                 "%s: line %d: group default objectclass "
 463                                                                 "\"%s\" unknown\n",
 464                                                                 fname, lineno, SLAPD_GROUP_CLASS );
 465                                                         acl_usage();
 466                                                 }
 467                                         }
 468
 469                                         if( is_object_subclass( b->a_group_oc,
 470                                                 slap_schema.si_oc_referral ) )
 471                                         {
 472                                                 fprintf( stderr,
 473                                                         "%s: line %d: group objectclass \"%s\" "
 474                                                         "is subclass of referral\n",
 475                                                         fname, lineno, value );
 476                                                 acl_usage();
 477                                         }
 478
 479                                         if( is_object_subclass( b->a_group_oc,
 480                                                 slap_schema.si_oc_alias ) )
 481                                         {
 482                                                 fprintf( stderr,
 483                                                         "%s: line %d: group objectclass \"%s\" "
 484                                                         "is subclass of alias\n",
 485                                                         fname, lineno, value );
 486                                                 acl_usage();
 487                                         }
 488
 489                                         if (name && *name) {
 490                                                 rc = slap_str2ad( name, &b->a_group_at, &text );
 491
 492                                                 if( rc != LDAP_SUCCESS ) {
 493                                                         fprintf( stderr,
 494                                                                 "%s: line %d: group \"%s\": %s\n",
 495                                                                 fname, lineno, right, text );
 496                                                         acl_usage();
 497                                                 }
 498                                                 *--name = '/';
 499                                         } else {
 500                                                 rc = slap_str2ad( SLAPD_GROUP_ATTR, &b->a_group_at, &text );
 501
 502                                                 if( rc != LDAP_SUCCESS ) {
 503                                                         fprintf( stderr,
 504                                                                 "%s: line %d: group \"%s\": %s\n",
 505                                                                 fname, lineno, SLAPD_GROUP_ATTR, text );
 506                                                         acl_usage();
 507                                                 }
 508                                         }
 509
 510                                         if( !is_at_syntax( b->a_group_at->ad_type,
 511                                                 SLAPD_DN_SYNTAX ) &&
 512                                             !is_at_syntax( b->a_group_at->ad_type,
 513                                                 SLAPD_NAMEUID_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                                 if ( strcasecmp( left, "set" ) == 0 ) {
 613                                         if( b->a_set_pat != NULL ) {
 614                                                 fprintf( stderr,
 615                                                         "%s: line %d: set attribute already specified.\n",
 616                                                         fname, lineno );
 617                                                 acl_usage();
 618                                         }
 619
 620                                         if ( right == NULL || *right == '\0' ) {
 621                                                 fprintf( stderr,
 622                                                         "%s: line %d: no set is defined\n",
 623                                                         fname, lineno );
 624                                                 acl_usage();
 625                                         }
 626
 627                                         b->a_set_style = sty;
 628                                         b->a_set_pat = ch_strdup(right);
 629
 630                                         continue;
 631                                 }
 632
 633 #ifdef SLAPD_ACI_ENABLED
 634                                 if ( strcasecmp( left, "aci" ) == 0 ) {
 635                                         if( b->a_aci_at != NULL ) {
 636                                                 fprintf( stderr,
 637                                                         "%s: line %d: aci attribute already specified.\n",
 638                                                         fname, lineno );
 639                                                 acl_usage();
 640                                         }
 641
 642                                         if ( right != NULL && *right != '\0' ) {
 643                                                 rc = slap_str2ad( right, &b->a_aci_at, &text );
 644
 645                                                 if( rc != LDAP_SUCCESS ) {
 646                                                         fprintf( stderr,
 647                                                                 "%s: line %d: aci \"%s\": %s\n",
 648                                                                 fname, lineno, right, text );
 649                                                         acl_usage();
 650                                                 }
 651
 652                                         } else {
 653                                                 rc = slap_str2ad( SLAPD_ACI_ATTR, &b->a_aci_at, &text );
 654
 655                                                 if( rc != LDAP_SUCCESS ) {
 656                                                         fprintf( stderr,
 657                                                                 "%s: line %d: aci \"%s\": %s\n",
 658                                                                 fname, lineno, SLAPD_ACI_ATTR, text );
 659                                                         acl_usage();
 660                                                 }
 661                                         }
 662
 663                                         if( !is_at_syntax( b->a_aci_at->ad_type,
 664                                                 SLAPD_ACI_SYNTAX) )
 665                                         {
 666                                                 fprintf( stderr,
 667                                                         "%s: line %d: aci \"%s\": inappropriate syntax: %s\n",
 668                                                         fname, lineno, right,
 669                                                         b->a_aci_at->ad_type->sat_syntax_oid );
 670                                                 acl_usage();
 671                                         }
 672
 673                                         continue;
 674                                 }
 675 #endif /* SLAPD_ACI_ENABLED */
 676
 677                                 if ( strcasecmp( left, "ssf" ) == 0 ) {
 678                                         if( b->a_authz.sai_ssf ) {
 679                                                 fprintf( stderr,
 680                                                         "%s: line %d: ssf attribute already specified.\n",
 681                                                         fname, lineno );
 682                                                 acl_usage();
 683                                         }
 684
 685                                         if ( right == NULL || *right == '\0' ) {
 686                                                 fprintf( stderr,
 687                                                         "%s: line %d: no ssf is defined\n",
 688                                                         fname, lineno );
 689                                                 acl_usage();
 690                                         }
 691
 692                                         b->a_authz.sai_ssf = atoi( right );
 693
 694                                         if( !b->a_authz.sai_ssf ) {
 695                                                 fprintf( stderr,
 696                                                         "%s: line %d: invalid ssf value (%s)\n",
 697                                                         fname, lineno, right );
 698                                                 acl_usage();
 699                                         }
 700                                         continue;
 701                                 }
 702
 703                                 if ( strcasecmp( left, "transport_ssf" ) == 0 ) {
 704                                         if( b->a_authz.sai_transport_ssf ) {
 705                                                 fprintf( stderr,
 706                                                         "%s: line %d: transport_ssf attribute already specified.\n",
 707                                                         fname, lineno );
 708                                                 acl_usage();
 709                                         }
 710
 711                                         if ( right == NULL || *right == '\0' ) {
 712                                                 fprintf( stderr,
 713                                                         "%s: line %d: no transport_ssf is defined\n",
 714                                                         fname, lineno );
 715                                                 acl_usage();
 716                                         }
 717
 718                                         b->a_authz.sai_transport_ssf = atoi( right );
 719
 720                                         if( !b->a_authz.sai_transport_ssf ) {
 721                                                 fprintf( stderr,
 722                                                         "%s: line %d: invalid transport_ssf value (%s)\n",
 723                                                         fname, lineno, right );
 724                                                 acl_usage();
 725                                         }
 726                                         continue;
 727                                 }
 728
 729                                 if ( strcasecmp( left, "tls_ssf" ) == 0 ) {
 730                                         if( b->a_authz.sai_tls_ssf ) {
 731                                                 fprintf( stderr,
 732                                                         "%s: line %d: tls_ssf attribute already specified.\n",
 733                                                         fname, lineno );
 734                                                 acl_usage();
 735                                         }
 736
 737                                         if ( right == NULL || *right == '\0' ) {
 738                                                 fprintf( stderr,
 739                                                         "%s: line %d: no tls_ssf is defined\n",
 740                                                         fname, lineno );
 741                                                 acl_usage();
 742                                         }
 743
 744                                         b->a_authz.sai_tls_ssf = atoi( right );
 745
 746                                         if( !b->a_authz.sai_tls_ssf ) {
 747                                                 fprintf( stderr,
 748                                                         "%s: line %d: invalid tls_ssf value (%s)\n",
 749                                                         fname, lineno, right );
 750                                                 acl_usage();
 751                                         }
 752                                         continue;
 753                                 }
 754
 755                                 if ( strcasecmp( left, "sasl_ssf" ) == 0 ) {
 756                                         if( b->a_authz.sai_sasl_ssf ) {
 757                                                 fprintf( stderr,
 758                                                         "%s: line %d: sasl_ssf attribute already specified.\n",
 759                                                         fname, lineno );
 760                                                 acl_usage();
 761                                         }
 762
 763                                         if ( right == NULL || *right == '\0' ) {
 764                                                 fprintf( stderr,
 765                                                         "%s: line %d: no sasl_ssf is defined\n",
 766                                                         fname, lineno );
 767                                                 acl_usage();
 768                                         }
 769
 770                                         b->a_authz.sai_sasl_ssf = atoi( right );
 771
 772                                         if( !b->a_authz.sai_sasl_ssf ) {
 773                                                 fprintf( stderr,
 774                                                         "%s: line %d: invalid sasl_ssf value (%s)\n",
 775                                                         fname, lineno, right );
 776                                                 acl_usage();
 777                                         }
 778                                         continue;
 779                                 }
 780
 781                                 if( right != NULL ) {
 782                                         /* unsplit */
 783                                         right[-1] = '=';
 784                                 }
 785                                 break;
 786                         }
 787
 788                         if( i == argc || ( strcasecmp( left, "stop" ) == 0 )) {
 789                                 /* out of arguments or plain stop */
 790
 791                                 ACL_PRIV_ASSIGN(b->a_access_mask, ACL_PRIV_ADDITIVE);
 792                                 b->a_type = ACL_STOP;
 793
 794                                 access_append( &a->acl_access, b );
 795                                 continue;
 796                         }
 797
 798                         if( strcasecmp( left, "continue" ) == 0 ) {
 799                                 /* plain continue */
 800
 801                                 ACL_PRIV_ASSIGN(b->a_access_mask, ACL_PRIV_ADDITIVE);
 802                                 b->a_type = ACL_CONTINUE;
 803
 804                                 access_append( &a->acl_access, b );
 805                                 continue;
 806                         }
 807
 808                         if( strcasecmp( left, "break" ) == 0 ) {
 809                                 /* plain continue */
 810
 811                                 ACL_PRIV_ASSIGN(b->a_access_mask, ACL_PRIV_ADDITIVE);
 812                                 b->a_type = ACL_BREAK;
 813
 814                                 access_append( &a->acl_access, b );
 815                                 continue;
 816                         }
 817
 818                         if ( strcasecmp( left, "by" ) == 0 ) {
 819                                 /* we've gone too far */
 820                                 --i;
 821                                 ACL_PRIV_ASSIGN(b->a_access_mask, ACL_PRIV_ADDITIVE);
 822                                 b->a_type = ACL_STOP;
 823
 824                                 access_append( &a->acl_access, b );
 825                                 continue;
 826                         }
 827
 828                         /* get <access> */
 829                         if( strncasecmp( left, "self", 4 ) == 0 ) {
 830                                 b->a_dn_self = 1;
 831                                 ACL_PRIV_ASSIGN( b->a_access_mask, str2accessmask( &left[4] ) );
 832
 833                         } else {
 834                                 ACL_PRIV_ASSIGN( b->a_access_mask, str2accessmask( left ) );
 835                         }
 836
 837                         if( ACL_IS_INVALID( b->a_access_mask ) ) {
 838                                 fprintf( stderr,
 839                                         "%s: line %d: expecting <access> got \"%s\"\n",
 840                                         fname, lineno, left );
 841                                 acl_usage();
 842                         }
 843
 844                         b->a_type = ACL_STOP;
 845
 846                         if( ++i == argc ) {
 847                                 /* out of arguments or plain stop */
 848                                 access_append( &a->acl_access, b );
 849                                 continue;
 850                         }
 851
 852                         if( strcasecmp( argv[i], "continue" ) == 0 ) {
 853                                 /* plain continue */
 854                                 b->a_type = ACL_CONTINUE;
 855
 856                         } else if( strcasecmp( argv[i], "break" ) == 0 ) {
 857                                 /* plain continue */
 858                                 b->a_type = ACL_BREAK;
 859
 860                         } else if ( strcasecmp( argv[i], "stop" ) != 0 ) {
 861                                 /* gone to far */
 862                                 i--;
 863                         }
 864
 865                         access_append( &a->acl_access, b );
 866
 867                 } else {
 868                         fprintf( stderr,
 869                     "%s: line %d: expecting \"to\" or \"by\" got \"%s\"\n",
 870                             fname, lineno, argv[i] );
 871                         acl_usage();
 872                 }
 873         }
 874
 875         /* if we have no real access clause, complain and do nothing */
 876         if ( a == NULL ) {
 877                         fprintf( stderr,
 878                                 "%s: line %d: warning: no access clause(s) specified in access line\n",
 879                             fname, lineno );
 880
 881         } else {
 882 #ifdef LDAP_DEBUG
 883                 if (ldap_debug & LDAP_DEBUG_ACL)
 884                         print_acl(be, a);
 885 #endif
 886
 887                 if ( a->acl_access == NULL ) {
 888                         fprintf( stderr,
 889                         "%s: line %d: warning: no by clause(s) specified in access line\n",
 890                             fname, lineno );
 891                 }
 892
 893                 if ( be != NULL ) {
 894                         acl_append( &be->be_acl, a );
 895                 } else {
 896                         acl_append( &global_acl, a );
 897                 }
 898         }
 899 }
 900
 901 char *
 902 accessmask2str( slap_mask_t mask, char *buf )
 903 {
 904         int none=1;
 905
 906         assert( buf != NULL );
 907
 908         if ( ACL_IS_INVALID( mask ) ) {
 909                 return "invalid";
 910         }
 911
 912         buf[0] = '\0';
 913
 914         if ( ACL_IS_LEVEL( mask ) ) {
 915                 if ( ACL_LVL_IS_NONE(mask) ) {
 916                         strcat( buf, "none" );
 917
 918                 } else if ( ACL_LVL_IS_AUTH(mask) ) {
 919                         strcat( buf, "auth" );
 920
 921                 } else if ( ACL_LVL_IS_COMPARE(mask) ) {
 922                         strcat( buf, "compare" );
 923
 924                 } else if ( ACL_LVL_IS_SEARCH(mask) ) {
 925                         strcat( buf, "search" );
 926
 927                 } else if ( ACL_LVL_IS_READ(mask) ) {
 928                         strcat( buf, "read" );
 929
 930                 } else if ( ACL_LVL_IS_WRITE(mask) ) {
 931                         strcat( buf, "write" );
 932                 } else {
 933                         strcat( buf, "unknown" );
 934                 }
 935
 936                 strcat(buf, " (");
 937         }
 938
 939         if( ACL_IS_ADDITIVE( mask ) ) {
 940                 strcat( buf, "+" );
 941
 942         } else if( ACL_IS_SUBTRACTIVE( mask ) ) {
 943                 strcat( buf, "-" );
 944
 945         } else {
 946                 strcat( buf, "=" );
 947         }
 948
 949         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_WRITE) ) {
 950                 none = 0;
 951                 strcat( buf, "w" );
 952         }
 953
 954         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_READ) ) {
 955                 none = 0;
 956                 strcat( buf, "r" );
 957         }
 958
 959         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_SEARCH) ) {
 960                 none = 0;
 961                 strcat( buf, "s" );
 962         }
 963
 964         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_COMPARE) ) {
 965                 none = 0;
 966                 strcat( buf, "c" );
 967         }
 968
 969         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_AUTH) ) {
 970                 none = 0;
 971                 strcat( buf, "x" );
 972         }
 973
 974         if ( none && ACL_PRIV_ISSET(mask, ACL_PRIV_NONE) ) {
 975                 none = 0;
 976                 strcat( buf, "n" );
 977         }
 978
 979         if ( none ) {
 980                 strcat( buf, "0" );
 981         }
 982
 983         if ( ACL_IS_LEVEL( mask ) ) {
 984                 strcat(buf, ")");
 985         }
 986         return buf;
 987 }
 988
 989 slap_mask_t
 990 str2accessmask( const char *str )
 991 {
 992         slap_mask_t     mask;
 993
 994         if( !ASCII_ALPHA(str[0]) ) {
 995                 int i;
 996
 997                 if ( str[0] == '=' ) {
 998                         ACL_INIT(mask);
 999
1000                 } else if( str[0] == '+' ) {
1001                         ACL_PRIV_ASSIGN(mask, ACL_PRIV_ADDITIVE);
1002
1003                 } else if( str[0] == '-' ) {
1004                         ACL_PRIV_ASSIGN(mask, ACL_PRIV_SUBSTRACTIVE);
1005
1006                 } else {
1007                         ACL_INVALIDATE(mask);
1008                         return mask;
1009                 }
1010
1011                 for( i=1; str[i] != '\0'; i++ ) {
1012                         if( TOLOWER(str[i]) == 'w' ) {
1013                                 ACL_PRIV_SET(mask, ACL_PRIV_WRITE);
1014
1015                         } else if( TOLOWER(str[i]) == 'r' ) {
1016                                 ACL_PRIV_SET(mask, ACL_PRIV_READ);
1017
1018                         } else if( TOLOWER(str[i]) == 's' ) {
1019                                 ACL_PRIV_SET(mask, ACL_PRIV_SEARCH);
1020
1021                         } else if( TOLOWER(str[i]) == 'c' ) {
1022                                 ACL_PRIV_SET(mask, ACL_PRIV_COMPARE);
1023
1024                         } else if( TOLOWER(str[i]) == 'x' ) {
1025                                 ACL_PRIV_SET(mask, ACL_PRIV_AUTH);
1026
1027                         } else if( str[i] != '0' ) {
1028                                 ACL_INVALIDATE(mask);
1029                                 return mask;
1030                         }
1031                 }
1032
1033                 return mask;
1034         }
1035
1036         if ( strcasecmp( str, "none" ) == 0 ) {
1037                 ACL_LVL_ASSIGN_NONE(mask);
1038
1039         } else if ( strcasecmp( str, "auth" ) == 0 ) {
1040                 ACL_LVL_ASSIGN_AUTH(mask);
1041
1042         } else if ( strcasecmp( str, "compare" ) == 0 ) {
1043                 ACL_LVL_ASSIGN_COMPARE(mask);
1044
1045         } else if ( strcasecmp( str, "search" ) == 0 ) {
1046                 ACL_LVL_ASSIGN_SEARCH(mask);
1047
1048         } else if ( strcasecmp( str, "read" ) == 0 ) {
1049                 ACL_LVL_ASSIGN_READ(mask);
1050
1051         } else if ( strcasecmp( str, "write" ) == 0 ) {
1052                 ACL_LVL_ASSIGN_WRITE(mask);
1053
1054         } else {
1055                 ACL_INVALIDATE( mask );
1056         }
1057
1058         return mask;
1059 }
1060
1061 static void
1062 acl_usage( void )
1063 {
1064         fprintf( stderr, "\n"
1065                 "<access clause> ::= access to <what> "
1066                                 "[ by <who> <access> <control> ]+ \n"
1067                 "<what> ::= * | [dn=<regex>] [filter=<ldapfilter>] [attrs=<attrlist>]\n"
1068                 "<attrlist> ::= <attr> | <attr> , <attrlist>\n"
1069                 "<attr> ::= <attrname> | entry | children\n"
1070                 "<who> ::= [ * | anonymous | users | self | dn=<regex> ]\n"
1071                         "\t[dnattr=<attrname>]\n"
1072                         "\t[group[/<objectclass>[/<attrname>]]=<regex>]\n"
1073                         "\t[peername=<regex>] [sockname=<regex>]\n"
1074                         "\t[domain=<regex>] [sockurl=<regex>]\n"
1075 #ifdef SLAPD_ACI_ENABLED
1076                         "\t[aci=<attrname>]\n"
1077 #endif
1078                         "\t[ssf=<n>] [transport_ssf=<n>] [tls_ssf=<n>] [sasl_ssf=<n>]\n"
1079                 "<access> ::= [self]{<level>|<priv>}\n"
1080                 "<level> ::= none | auth | compare | search | read | write\n"
1081                 "<priv> ::= {=|+|-}{w|r|s|c|x}+\n"
1082                 "<control> ::= [ stop | continue | break ]\n"
1083                 );
1084         exit( EXIT_FAILURE );
1085 }
1086
1087 static void
1088 split(
1089     char        *line,
1090     int         splitchar,
1091     char        **left,
1092     char        **right
1093 )
1094 {
1095         *left = line;
1096         if ( (*right = strchr( line, splitchar )) != NULL ) {
1097                 *((*right)++) = '\0';
1098         }
1099 }
1100
1101 static void
1102 access_append( Access **l, Access *a )
1103 {
1104         for ( ; *l != NULL; l = &(*l)->a_next )
1105                 ;       /* NULL */
1106
1107         *l = a;
1108 }
1109
1110 void
1111 acl_append( AccessControl **l, AccessControl *a )
1112 {
1113         for ( ; *l != NULL; l = &(*l)->acl_next )
1114                 ;       /* NULL */
1115
1116         *l = a;
1117 }
1118
1119 char *
1120 access2str( slap_access_t access )
1121 {
1122         if ( access == ACL_NONE ) {
1123                 return "none";
1124
1125         } else if ( access == ACL_AUTH ) {
1126                 return "auth";
1127
1128         } else if ( access == ACL_COMPARE ) {
1129                 return "compare";
1130
1131         } else if ( access == ACL_SEARCH ) {
1132                 return "search";
1133
1134         } else if ( access == ACL_READ ) {
1135                 return "read";
1136
1137         } else if ( access == ACL_WRITE ) {
1138                 return "write";
1139         }
1140
1141         return "unknown";
1142 }
1143
1144 slap_access_t
1145 str2access( const char *str )
1146 {
1147         if ( strcasecmp( str, "none" ) == 0 ) {
1148                 return ACL_NONE;
1149
1150         } else if ( strcasecmp( str, "auth" ) == 0 ) {
1151                 return ACL_AUTH;
1152
1153         } else if ( strcasecmp( str, "compare" ) == 0 ) {
1154                 return ACL_COMPARE;
1155
1156         } else if ( strcasecmp( str, "search" ) == 0 ) {
1157                 return ACL_SEARCH;
1158
1159         } else if ( strcasecmp( str, "read" ) == 0 ) {
1160                 return ACL_READ;
1161
1162         } else if ( strcasecmp( str, "write" ) == 0 ) {
1163                 return ACL_WRITE;
1164         }
1165
1166         return( ACL_INVALID_ACCESS );
1167 }
1168
1169 #ifdef LDAP_DEBUG
1170
1171 static char *style_strings[5] = {
1172                         "regex",
1173                         "base",
1174                         "one",
1175                         "subtree",
1176                         "children"
1177                 };
1178
1179
1180 static void
1181 print_access( Access *b )
1182 {
1183         char maskbuf[ACCESSMASK_MAXLEN];
1184
1185         fprintf( stderr, "\tby" );
1186
1187         if ( b->a_dn_pat != NULL ) {
1188                 if( strcmp(b->a_dn_pat, "*") == 0
1189                         || strcmp(b->a_dn_pat, "users") == 0
1190                         || strcmp(b->a_dn_pat, "anonymous") == 0
1191                         || strcmp(b->a_dn_pat, "self") == 0 )
1192                 {
1193                         fprintf( stderr, " %s", b->a_dn_pat );
1194
1195                 } else {
1196                         fprintf( stderr, " dn.%s=%s", style_strings[b->a_dn_style], b->a_dn_pat );
1197                 }
1198         }
1199
1200         if ( b->a_dn_at != NULL ) {
1201                 fprintf( stderr, " dnattr=%s", b->a_dn_at->ad_cname->bv_val );
1202         }
1203
1204         if ( b->a_group_pat != NULL ) {
1205                 fprintf( stderr, " group=%s", b->a_group_pat );
1206
1207                 if ( b->a_group_oc ) {
1208                         fprintf( stderr, " objectClass: %s",
1209                                 b->a_group_oc->soc_oclass.oc_oid );
1210
1211                         if ( b->a_group_at ) {
1212                                 fprintf( stderr, " attributeType: %s", b->a_group_at->ad_cname->bv_val );
1213                         }
1214                 }
1215     }
1216
1217         if ( b->a_peername_pat != NULL ) {
1218                 fprintf( stderr, " peername=%s", b->a_peername_pat );
1219         }
1220
1221         if ( b->a_sockname_pat != NULL ) {
1222                 fprintf( stderr, " sockname=%s", b->a_sockname_pat );
1223         }
1224
1225         if ( b->a_domain_pat != NULL ) {
1226                 fprintf( stderr, " domain=%s", b->a_domain_pat );
1227         }
1228
1229         if ( b->a_sockurl_pat != NULL ) {
1230                 fprintf( stderr, " sockurl=%s", b->a_sockurl_pat );
1231         }
1232
1233 #ifdef SLAPD_ACI_ENABLED
1234         if ( b->a_aci_at != NULL ) {
1235                 fprintf( stderr, " aci=%s", b->a_aci_at->ad_cname->bv_val );
1236         }
1237 #endif
1238
1239         /* Security Strength Factors */
1240         if ( b->a_authz.sai_ssf ) {
1241                 fprintf( stderr, " ssf=%u",
1242                         b->a_authz.sai_ssf );
1243         }
1244         if ( b->a_authz.sai_transport_ssf ) {
1245                 fprintf( stderr, " transport_ssf=%u",
1246                         b->a_authz.sai_transport_ssf );
1247         }
1248         if ( b->a_authz.sai_tls_ssf ) {
1249                 fprintf( stderr, " tls_ssf=%u",
1250                         b->a_authz.sai_tls_ssf );
1251         }
1252         if ( b->a_authz.sai_sasl_ssf ) {
1253                 fprintf( stderr, " sasl_ssf=%u",
1254                         b->a_authz.sai_sasl_ssf );
1255         }
1256
1257         fprintf( stderr, " %s%s",
1258                 b->a_dn_self ? "self" : "",
1259                 accessmask2str( b->a_access_mask, maskbuf ) );
1260
1261         if( b->a_type == ACL_BREAK ) {
1262                 fprintf( stderr, " break" );
1263
1264         } else if( b->a_type == ACL_CONTINUE ) {
1265                 fprintf( stderr, " continue" );
1266
1267         } else if( b->a_type != ACL_STOP ) {
1268                 fprintf( stderr, " unknown-control" );
1269         }
1270
1271         fprintf( stderr, "\n" );
1272 }
1273
1274
1275 static void
1276 print_acl( Backend *be, AccessControl *a )
1277 {
1278         int             to = 0;
1279         Access  *b;
1280
1281         fprintf( stderr, "%s ACL: access to",
1282                 be == NULL ? "Global" : "Backend" );
1283
1284         if ( a->acl_dn_pat != NULL ) {
1285                 to++;
1286                 fprintf( stderr, " dn.%s=%s\n",
1287                         style_strings[a->acl_dn_style], a->acl_dn_pat );
1288         }
1289
1290         if ( a->acl_filter != NULL ) {
1291                 to++;
1292                 fprintf( stderr, " filter=" );
1293                 filter_print( a->acl_filter );
1294                 fprintf( stderr, "\n" );
1295         }
1296
1297         if ( a->acl_attrs != NULL ) {
1298                 int     i, first = 1;
1299                 to++;
1300
1301                 fprintf( stderr, " attrs=" );
1302                 for ( i = 0; a->acl_attrs[i] != NULL; i++ ) {
1303                         if ( ! first ) {
1304                                 fprintf( stderr, "," );
1305                         }
1306                         fprintf( stderr, a->acl_attrs[i] );
1307                         first = 0;
1308                 }
1309                 fprintf(  stderr, "\n" );
1310         }
1311
1312         if( !to ) {
1313                 fprintf( stderr, " *\n" );
1314         }
1315
1316         for ( b = a->acl_access; b != NULL; b = b->a_next ) {
1317                 print_access( b );
1318         }
1319
1320         fprintf( stderr, "\n" );
1321 }
1322
1323 #endif /* LDAP_DEBUG */