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

   1 /* acl.c - routines to parse and check acl's */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-1999 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;
  96         AccessControl   *a;
  97         Access  *b;
  98
  99         a = NULL;
 100         for ( i = 1; i < argc; i++ ) {
 101                 /* to clause - select which entries are protected */
 102                 if ( strcasecmp( argv[i], "to" ) == 0 ) {
 103                         if ( a != NULL ) {
 104                                 fprintf( stderr,
 105                 "%s: line %d: only one to clause allowed in access line\n",
 106                                     fname, lineno );
 107                                 acl_usage();
 108                         }
 109                         a = (AccessControl *) ch_calloc( 1, sizeof(AccessControl) );
 110                         a->acl_filter = NULL;
 111                         a->acl_dn_pat = NULL;
 112                         a->acl_attrs  = NULL;
 113                         a->acl_access = NULL;
 114                         a->acl_next   = NULL;
 115                         for ( ++i; i < argc; i++ ) {
 116                                 if ( strcasecmp( argv[i], "by" ) == 0 ) {
 117                                         i--;
 118                                         break;
 119                                 }
 120
 121                                 if ( strcasecmp( argv[i], "*" ) == 0 ) {
 122                                         if( a->acl_dn_pat != NULL ) {
 123                                                 fprintf( stderr,
 124                                                         "%s: line %d: dn pattern"
 125                                                         " already specified in to clause.\n",
 126                                                         fname, lineno );
 127                                                 acl_usage();
 128                                         }
 129
 130                                         a->acl_dn_pat = ch_strdup( "*" );
 131                                         continue;
 132                                 }
 133
 134                                 split( argv[i], '=', &left, &right );
 135
 136                                 if ( strcasecmp( left, "dn" ) == 0 ) {
 137                                         if( a->acl_dn_pat != NULL ) {
 138                                                 fprintf( stderr,
 139                                                         "%s: line %d: dn pattern"
 140                                                         " already specified in to clause.\n",
 141                                                         fname, lineno );
 142                                                 acl_usage();
 143                                         }
 144
 145                                         if ( right == NULL ) {
 146                                                 fprintf( stderr,
 147         "%s: line %d: missing \"=\" in \"%s\" in to clause\n",
 148                                                     fname, lineno, left );
 149                                                 acl_usage();
 150                                         }
 151
 152                                         if( *right == '\0' ) {
 153                                                 a->acl_dn_pat = ch_strdup("^$");
 154
 155                                         } else if ( strcmp(right, "*") == 0
 156                                                 || strcmp(right, ".*") == 0
 157                                                 || strcmp(right, ".*$") == 0
 158                                                 || strcmp(right, "^.*") == 0
 159                                                 || strcmp(right, "^.*$$") == 0
 160                                                 || strcmp(right, ".*$$") == 0
 161                                                 || strcmp(right, "^.*$$") == 0 )
 162                                         {
 163                                                 a->acl_dn_pat = ch_strdup( "*" );
 164
 165                                         } else {
 166                                                 a->acl_dn_pat = ch_strdup( right );
 167                                         }
 168
 169                                         continue;
 170                                 }
 171
 172                                 if ( right == NULL || *right == '\0' ) {
 173                                         fprintf( stderr,
 174         "%s: line %d: missing \"=\" in (or value after) \"%s\" in to clause\n",
 175                                             fname, lineno, left );
 176                                         acl_usage();
 177                                 }
 178
 179                                 if ( strcasecmp( left, "filter" ) == 0 ) {
 180                                         if ( (a->acl_filter = str2filter(
 181                                             right )) == NULL ) {
 182                                                 fprintf( stderr,
 183                                 "%s: line %d: bad filter \"%s\" in to clause\n",
 184                                                     fname, lineno, right );
 185                                                 acl_usage();
 186                                         }
 187
 188                                 } else if ( strncasecmp( left, "attr", 4 ) == 0 ) {
 189                                         char    **alist;
 190
 191                                         alist = str2charray( right, "," );
 192                                         charray_merge( &a->acl_attrs, alist );
 193                                         charray_free( alist );
 194
 195                                 } else {
 196                                         fprintf( stderr,
 197                                                 "%s: line %d: expecting <what> got \"%s\"\n",
 198                                             fname, lineno, left );
 199                                         acl_usage();
 200                                 }
 201                         }
 202
 203                         if ( a->acl_dn_pat != NULL && strcmp(a->acl_dn_pat, "*") == 0) {
 204                                 free( a->acl_dn_pat );
 205                                 a->acl_dn_pat = NULL;
 206                         }
 207
 208                         if( a->acl_dn_pat != NULL ) {
 209                                 int e = regcomp( &a->acl_dn_re, a->acl_dn_pat,
 210                                                  REG_EXTENDED | REG_ICASE );
 211                                 if ( e ) {
 212                                         char buf[512];
 213                                         regerror( e, &a->acl_dn_re, buf, sizeof(buf) );
 214                                         fprintf( stderr,
 215                                 "%s: line %d: regular expression \"%s\" bad because of %s\n",
 216                                                  fname, lineno, right, buf );
 217                                         acl_usage();
 218                                 }
 219                         }
 220
 221                 /* by clause - select who has what access to entries */
 222                 } else if ( strcasecmp( argv[i], "by" ) == 0 ) {
 223                         if ( a == NULL ) {
 224                                 fprintf( stderr,
 225                                         "%s: line %d: to clause required before by clause in access line\n",
 226                                     fname, lineno );
 227                                 acl_usage();
 228                         }
 229
 230                         /*
 231                          * by clause consists of <who> and <access>
 232                          */
 233
 234                         b = (Access *) ch_calloc( 1, sizeof(Access) );
 235
 236                         ACL_INVALIDATE( b->a_mask );
 237
 238                         if ( ++i == argc ) {
 239                                 fprintf( stderr,
 240                             "%s: line %d: premature eol: expecting <who>\n",
 241                                     fname, lineno );
 242                                 acl_usage();
 243                         }
 244
 245                         /* get <who> */
 246                         for ( ; i < argc; i++ ) {
 247                                 char *pat;
 248                                 split( argv[i], '=', &left, &right );
 249
 250                                 if ( strcasecmp( argv[i], "*" ) == 0 ) {
 251                                         pat = ch_strdup( "*" );
 252
 253                                 } else if ( strcasecmp( argv[i], "anonymous" ) == 0 ) {
 254                                         pat = ch_strdup( "anonymous" );
 255
 256                                 } else if ( strcasecmp( argv[i], "self" ) == 0 ) {
 257                                         pat = ch_strdup( "self" );
 258
 259                                 } else if ( strcasecmp( argv[i], "users" ) == 0 ) {
 260                                         pat = ch_strdup( "users" );
 261
 262                                 } else if ( strcasecmp( left, "dn" ) == 0 ) {
 263                                         if( right == NULL ) {
 264                                                 /* no '=' */
 265                                                 pat = ch_strdup( "users" );
 266
 267                                         } else if (*right == '\0' ) {
 268                                                 /* dn="" */
 269                                                 pat = ch_strdup( "anonymous" );
 270
 271                                         } else if ( strcmp( right, "*" ) == 0 ) {
 272                                                 /* dn=* /
 273                                                 /* any or users?  any for now */
 274                                                 pat = ch_strdup( "users" );
 275
 276                                         } else if ( strcmp( right, ".+" ) == 0
 277                                                 || strcmp( right, "^.+" ) == 0
 278                                                 || strcmp( right, ".+$" ) == 0
 279                                                 || strcmp( right, "^.+$" ) == 0
 280                                                 || strcmp( right, ".+$$" ) == 0
 281                                                 || strcmp( right, "^.+$$" ) == 0 )
 282                                         {
 283                                                 pat = ch_strdup( "users" );
 284
 285                                         } else if ( strcmp( right, ".*" ) == 0
 286                                                 || strcmp( right, "^.*" ) == 0
 287                                                 || strcmp( right, ".*$" ) == 0
 288                                                 || strcmp( right, "^.*$" ) == 0
 289                                                 || strcmp( right, ".*$$" ) == 0
 290                                                 || strcmp( right, "^.*$$" ) == 0 )
 291                                         {
 292                                                 pat = ch_strdup( "*" );
 293
 294                                         } else {
 295                                                 regtest(fname, lineno, right);
 296                                                 pat = ch_strdup( right );
 297                                         }
 298
 299                                 } else {
 300                                         pat = NULL;
 301                                 }
 302
 303                                 if( pat != NULL ) {
 304                                         if( b->a_dn_pat != NULL ) {
 305                                                 fprintf( stderr,
 306                                                     "%s: line %d: dn pattern already specified.\n",
 307                                                     fname, lineno );
 308                                                 acl_usage();
 309                                         }
 310
 311                                         b->a_dn_pat = pat;
 312                                         continue;
 313                                 }
 314
 315                                 if ( strcasecmp( left, "dnattr" ) == 0 ) {
 316                                         if( b->a_dn_pat != NULL ) {
 317                                                 fprintf( stderr,
 318                                                         "%s: line %d: dnaddr already specified.\n",
 319                                                         fname, lineno );
 320                                                 acl_usage();
 321                                         }
 322
 323                                         b->a_dn_at = ch_strdup( right );
 324                                         continue;
 325                                 }
 326
 327                                 if ( strncasecmp( left, "group", sizeof("group")-1 ) == 0 ) {
 328                                         char *name = NULL;
 329                                         char *value = NULL;
 330
 331                                         if( b->a_group_pat != NULL ) {
 332                                                 fprintf( stderr,
 333                                                         "%s: line %d: group pattern already specified.\n",
 334                                                         fname, lineno );
 335                                                 acl_usage();
 336                                         }
 337
 338                                         /* format of string is "group/objectClassValue/groupAttrName" */
 339                                         if ((value = strchr(left, '/')) != NULL) {
 340                                                 *value++ = '\0';
 341                                                 if (*value
 342                                                         && (name = strchr(value, '/')) != NULL)
 343                                                 {
 344                                                         *name++ = '\0';
 345                                                 }
 346                                         }
 347
 348                                         regtest(fname, lineno, right);
 349                                         b->a_group_pat = ch_strdup( right );
 350
 351                                         if (value && *value) {
 352                                                 b->a_group_oc = ch_strdup(value);
 353                                                 *--value = '/';
 354                                         } else {
 355                                                 b->a_group_oc = ch_strdup("groupOfNames");
 356                                         }
 357
 358                                         if (name && *name) {
 359                                                 b->a_group_at = ch_strdup(name);
 360                                                 *--name = '/';
 361
 362                                         } else {
 363                                                 b->a_group_at = ch_strdup("member");
 364                                         }
 365                                         continue;
 366                                 }
 367
 368                                 if ( strcasecmp( left, "peername" ) == 0 ) {
 369                                         if( b->a_peername_pat != NULL ) {
 370                                                 fprintf( stderr,
 371                                                         "%s: line %d: peername pattern already specified.\n",
 372                                                         fname, lineno );
 373                                                 acl_usage();
 374                                         }
 375
 376                                         regtest(fname, lineno, right);
 377                                         b->a_peername_pat = ch_strdup( right );
 378                                         continue;
 379                                 }
 380
 381                                 if ( strcasecmp( left, "sockname" ) == 0 ) {
 382                                         if( b->a_sockname_pat != NULL ) {
 383                                                 fprintf( stderr,
 384                                                         "%s: line %d: sockname pattern already specified.\n",
 385                                                         fname, lineno );
 386                                                 acl_usage();
 387                                         }
 388
 389                                         regtest(fname, lineno, right);
 390                                         b->a_sockname_pat = ch_strdup( right );
 391                                         continue;
 392                                 }
 393
 394                                 if ( strcasecmp( left, "domain" ) == 0 ) {
 395                                         if( b->a_domain_pat != NULL ) {
 396                                                 fprintf( stderr,
 397                                                         "%s: line %d: domain pattern already specified.\n",
 398                                                         fname, lineno );
 399                                                 acl_usage();
 400                                         }
 401
 402                                         regtest(fname, lineno, right);
 403                                         b->a_domain_pat = ch_strdup( right );
 404                                         continue;
 405                                 }
 406
 407                                 if ( strcasecmp( left, "sockurl" ) == 0 ) {
 408                                         if( b->a_sockurl_pat != NULL ) {
 409                                                 fprintf( stderr,
 410                                                         "%s: line %d: sockurl pattern already specified.\n",
 411                                                         fname, lineno );
 412                                                 acl_usage();
 413                                         }
 414
 415                                         regtest(fname, lineno, right);
 416                                         b->a_sockurl_pat = ch_strdup( right );
 417                                         continue;
 418                                 }
 419
 420 #ifdef SLAPD_ACI_ENABLED
 421                                 if ( strcasecmp( left, "aci" ) == 0 ) {
 422                                         if( b->a_aci_at != NULL ) {
 423                                                 fprintf( stderr,
 424                                                         "%s: line %d: aci attribute already specified.\n",
 425                                                         fname, lineno );
 426                                                 acl_usage();
 427                                         }
 428
 429                                         if ( right != NULL && *right != '\0' )
 430                                                 b->a_aci_at = ch_strdup( right );
 431                                         else
 432                                                 b->a_aci_at = ch_strdup( SLAPD_ACI_DEFAULT_ATTR );
 433                                         continue;
 434                                 }
 435 #endif
 436
 437                                 if( right != NULL ) {
 438                                         /* unsplit */
 439                                         right[-1] = '=';
 440                                 }
 441                                 break;
 442                         }
 443
 444                         if( i == argc || ( strcasecmp( left, "stop" ) == 0 )) {
 445                                 /* out of arguments or plain stop */
 446
 447                                 ACL_PRIV_ASSIGN(b->a_mask, ACL_PRIV_ADDITIVE);
 448                                 b->a_type = ACL_STOP;
 449
 450                                 access_append( &a->acl_access, b );
 451                                 continue;
 452                         }
 453
 454                         if( strcasecmp( left, "continue" ) == 0 ) {
 455                                 /* plain continue */
 456
 457                                 ACL_PRIV_ASSIGN(b->a_mask, ACL_PRIV_ADDITIVE);
 458                                 b->a_type = ACL_CONTINUE;
 459
 460                                 access_append( &a->acl_access, b );
 461                                 continue;
 462                         }
 463
 464                         if( strcasecmp( left, "break" ) == 0 ) {
 465                                 /* plain continue */
 466
 467                                 ACL_PRIV_ASSIGN(b->a_mask, ACL_PRIV_ADDITIVE);
 468                                 b->a_type = ACL_BREAK;
 469
 470                                 access_append( &a->acl_access, b );
 471                                 continue;
 472                         }
 473
 474                         if ( strcasecmp( left, "by" ) == 0 ) {
 475                                 /* we've gone too far */
 476                                 --i;
 477                                 ACL_PRIV_ASSIGN(b->a_mask, ACL_PRIV_ADDITIVE);
 478                                 b->a_type = ACL_STOP;
 479
 480                                 access_append( &a->acl_access, b );
 481                                 continue;
 482                         }
 483
 484                         /* get <access> */
 485                         if( strncasecmp( left, "self", 4 ) == 0 ) {
 486                                 b->a_dn_self = 1;
 487                                 ACL_PRIV_ASSIGN( b->a_mask, str2accessmask( &left[4] ) );
 488
 489                         } else {
 490                                 ACL_PRIV_ASSIGN( b->a_mask, str2accessmask( left ) );
 491                         }
 492
 493                         if( ACL_IS_INVALID( b->a_mask ) ) {
 494                                 fprintf( stderr,
 495                                         "%s: line %d: expecting <access> got \"%s\"\n",
 496                                         fname, lineno, left );
 497                                 acl_usage();
 498                         }
 499
 500                         b->a_type = ACL_STOP;
 501
 502                         if( ++i == argc ) {
 503                                 /* out of arguments or plain stop */
 504                                 access_append( &a->acl_access, b );
 505                                 continue;
 506                         }
 507
 508                         if( strcasecmp( argv[i], "continue" ) == 0 ) {
 509                                 /* plain continue */
 510                                 b->a_type = ACL_CONTINUE;
 511
 512                         } else if( strcasecmp( argv[i], "break" ) == 0 ) {
 513                                 /* plain continue */
 514                                 b->a_type = ACL_BREAK;
 515
 516                         } else if ( strcasecmp( argv[i], "stop" ) != 0 ) {
 517                                 /* gone to far */
 518                                 i--;
 519                         }
 520
 521                         access_append( &a->acl_access, b );
 522
 523                 } else {
 524                         fprintf( stderr,
 525                     "%s: line %d: expecting \"to\" or \"by\" got \"%s\"\n",
 526                             fname, lineno, argv[i] );
 527                         acl_usage();
 528                 }
 529         }
 530
 531         /* if we have no real access clause, complain and do nothing */
 532         if ( a == NULL ) {
 533                         fprintf( stderr,
 534                                 "%s: line %d: warning: no access clause(s) specified in access line\n",
 535                             fname, lineno );
 536
 537         } else {
 538 #ifdef LDAP_DEBUG
 539                 if (ldap_debug & LDAP_DEBUG_ACL)
 540                         print_acl(be, a);
 541 #endif
 542
 543                 if ( a->acl_access == NULL ) {
 544                         fprintf( stderr,
 545                         "%s: line %d: warning: no by clause(s) specified in access line\n",
 546                             fname, lineno );
 547                 }
 548
 549                 if ( be != NULL ) {
 550                         acl_append( &be->be_acl, a );
 551                 } else {
 552                         acl_append( &global_acl, a );
 553                 }
 554         }
 555 }
 556
 557 char *
 558 accessmask2str( slap_access_mask_t mask, char *buf )
 559 {
 560         int none=1;
 561
 562         assert( buf != NULL );
 563
 564         if ( ACL_IS_INVALID( mask ) ) {
 565                 return "invalid";
 566         }
 567
 568         buf[0] = '\0';
 569
 570         if ( ACL_IS_LEVEL( mask ) ) {
 571                 if ( ACL_LVL_IS_NONE(mask) ) {
 572                         strcat( buf, "none" );
 573
 574                 } else if ( ACL_LVL_IS_AUTH(mask) ) {
 575                         strcat( buf, "auth" );
 576
 577                 } else if ( ACL_LVL_IS_COMPARE(mask) ) {
 578                         strcat( buf, "compare" );
 579
 580                 } else if ( ACL_LVL_IS_SEARCH(mask) ) {
 581                         strcat( buf, "search" );
 582
 583                 } else if ( ACL_LVL_IS_READ(mask) ) {
 584                         strcat( buf, "read" );
 585
 586                 } else if ( ACL_LVL_IS_WRITE(mask) ) {
 587                         strcat( buf, "write" );
 588                 } else {
 589                         strcat( buf, "unknown" );
 590                 }
 591
 592                 strcat(buf, " (");
 593         }
 594
 595         if( ACL_IS_ADDITIVE( mask ) ) {
 596                 strcat( buf, "+" );
 597
 598         } else if( ACL_IS_SUBTRACTIVE( mask ) ) {
 599                 strcat( buf, "-" );
 600
 601         } else {
 602                 strcat( buf, "=" );
 603         }
 604
 605         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_WRITE) ) {
 606                 none = 0;
 607                 strcat( buf, "w" );
 608         }
 609
 610         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_READ) ) {
 611                 none = 0;
 612                 strcat( buf, "r" );
 613         }
 614
 615         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_SEARCH) ) {
 616                 none = 0;
 617                 strcat( buf, "s" );
 618         }
 619
 620         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_COMPARE) ) {
 621                 none = 0;
 622                 strcat( buf, "c" );
 623         }
 624
 625         if ( ACL_PRIV_ISSET(mask, ACL_PRIV_AUTH) ) {
 626                 none = 0;
 627                 strcat( buf, "x" );
 628         }
 629
 630         if ( none && ACL_PRIV_ISSET(mask, ACL_PRIV_NONE) ) {
 631                 none = 0;
 632                 strcat( buf, "n" );
 633         }
 634
 635         if ( none ) {
 636                 strcat( buf, "0" );
 637         }
 638
 639         if ( ACL_IS_LEVEL( mask ) ) {
 640                 strcat(buf, ")");
 641         }
 642         return buf;
 643 }
 644
 645 slap_access_mask_t
 646 str2accessmask( const char *str )
 647 {
 648         slap_access_mask_t      mask;
 649
 650         if( !isalpha(str[0]) ) {
 651                 int i;
 652
 653                 if ( str[0] == '=' ) {
 654                         ACL_INIT(mask);
 655
 656                 } else if( str[0] == '+' ) {
 657                         ACL_PRIV_ASSIGN(mask, ACL_PRIV_ADDITIVE);
 658
 659                 } else if( str[0] == '-' ) {
 660                         ACL_PRIV_ASSIGN(mask, ACL_PRIV_SUBSTRACTIVE);
 661
 662                 } else {
 663                         ACL_INVALIDATE(mask);
 664                         return mask;
 665                 }
 666
 667                 for( i=1; str[i] != '\0'; i++ ) {
 668                         if( TOLOWER(str[i]) == 'w' ) {
 669                                 ACL_PRIV_SET(mask, ACL_PRIV_WRITE);
 670
 671                         } else if( TOLOWER(str[i]) == 'r' ) {
 672                                 ACL_PRIV_SET(mask, ACL_PRIV_READ);
 673
 674                         } else if( TOLOWER(str[i]) == 's' ) {
 675                                 ACL_PRIV_SET(mask, ACL_PRIV_SEARCH);
 676
 677                         } else if( TOLOWER(str[i]) == 'c' ) {
 678                                 ACL_PRIV_SET(mask, ACL_PRIV_COMPARE);
 679
 680                         } else if( TOLOWER(str[i]) == 'x' ) {
 681                                 ACL_PRIV_SET(mask, ACL_PRIV_AUTH);
 682
 683                         } else if( str[i] != '0' ) {
 684                                 ACL_INVALIDATE(mask);
 685                                 return mask;
 686                         }
 687                 }
 688
 689                 return mask;
 690         }
 691
 692         if ( strcasecmp( str, "none" ) == 0 ) {
 693                 ACL_LVL_ASSIGN_NONE(mask);
 694
 695         } else if ( strcasecmp( str, "auth" ) == 0 ) {
 696                 ACL_LVL_ASSIGN_AUTH(mask);
 697
 698         } else if ( strcasecmp( str, "compare" ) == 0 ) {
 699                 ACL_LVL_ASSIGN_COMPARE(mask);
 700
 701         } else if ( strcasecmp( str, "search" ) == 0 ) {
 702                 ACL_LVL_ASSIGN_SEARCH(mask);
 703
 704         } else if ( strcasecmp( str, "read" ) == 0 ) {
 705                 ACL_LVL_ASSIGN_READ(mask);
 706
 707         } else if ( strcasecmp( str, "write" ) == 0 ) {
 708                 ACL_LVL_ASSIGN_WRITE(mask);
 709
 710         } else {
 711                 ACL_INVALIDATE( mask );
 712         }
 713
 714         return mask;
 715 }
 716
 717 static void
 718 acl_usage( void )
 719 {
 720         fprintf( stderr, "\n"
 721                 "<access clause> ::= access to <what> "
 722                                 "[ by <who> <access> <control> ]+ \n"
 723                 "<what> ::= * | [dn=<regex>] [filter=<ldapfilter>] [attrs=<attrlist>]\n"
 724                 "<attrlist> ::= <attr> | <attr> , <attrlist>\n"
 725                 "<attr> ::= <attrname> | entry | children\n"
 726                 "<who> ::= [ * | anonymous | users | self | dn=<regex> ]\n"
 727                         "\t[dnattr=<attrname>]\n"
 728                         "\t[group[/<objectclass>[/<attrname>]]=<regex>]\n"
 729                         "\t[peername=<regex>] [sockname=<regex>]\n"
 730                         "\t[domain=<regex>] [sockurl=<regex>]\n"
 731 #ifdef SLAPD_ACI_ENABLED
 732                         "\t[aci=<attrname>]\n"
 733 #endif
 734                 "<access> ::= [self]{<level>|<priv>}\n"
 735                 "<level> ::= none | auth | compare | search | read | write\n"
 736                 "<priv> ::= {=|+|-}{w|r|s|c|x}+\n"
 737                 "<control> ::= [ stop | continue | break ]\n"
 738                 );
 739         exit( EXIT_FAILURE );
 740 }
 741
 742 static void
 743 split(
 744     char        *line,
 745     int         splitchar,
 746     char        **left,
 747     char        **right
 748 )
 749 {
 750         *left = line;
 751         if ( (*right = strchr( line, splitchar )) != NULL ) {
 752                 *((*right)++) = '\0';
 753         }
 754 }
 755
 756 static void
 757 access_append( Access **l, Access *a )
 758 {
 759         for ( ; *l != NULL; l = &(*l)->a_next )
 760                 ;       /* NULL */
 761
 762         *l = a;
 763 }
 764
 765 void
 766 acl_append( AccessControl **l, AccessControl *a )
 767 {
 768         for ( ; *l != NULL; l = &(*l)->acl_next )
 769                 ;       /* NULL */
 770
 771         *l = a;
 772 }
 773
 774 char *
 775 access2str( slap_access_t access )
 776 {
 777         if ( access == ACL_NONE ) {
 778                 return "none";
 779
 780         } else if ( access == ACL_AUTH ) {
 781                 return "auth";
 782
 783         } else if ( access == ACL_COMPARE ) {
 784                 return "compare";
 785
 786         } else if ( access == ACL_SEARCH ) {
 787                 return "search";
 788
 789         } else if ( access == ACL_READ ) {
 790                 return "read";
 791
 792         } else if ( access == ACL_WRITE ) {
 793                 return "write";
 794         }
 795
 796         return "unknown";
 797 }
 798
 799 slap_access_t
 800 str2access( const char *str )
 801 {
 802         if ( strcasecmp( str, "none" ) == 0 ) {
 803                 return ACL_NONE;
 804
 805         } else if ( strcasecmp( str, "auth" ) == 0 ) {
 806                 return ACL_AUTH;
 807
 808         } else if ( strcasecmp( str, "compare" ) == 0 ) {
 809                 return ACL_COMPARE;
 810
 811         } else if ( strcasecmp( str, "search" ) == 0 ) {
 812                 return ACL_SEARCH;
 813
 814         } else if ( strcasecmp( str, "read" ) == 0 ) {
 815                 return ACL_READ;
 816
 817         } else if ( strcasecmp( str, "write" ) == 0 ) {
 818                 return ACL_WRITE;
 819         }
 820
 821         return( ACL_INVALID_ACCESS );
 822 }
 823
 824 #ifdef LDAP_DEBUG
 825
 826 static void
 827 print_access( Access *b )
 828 {
 829         char maskbuf[ACCESSMASK_MAXLEN];
 830
 831         fprintf( stderr, "\tby" );
 832
 833         if ( b->a_dn_pat != NULL ) {
 834                 if( strcmp(b->a_dn_pat, "*") == 0
 835                         || strcmp(b->a_dn_pat, "users") == 0
 836                         || strcmp(b->a_dn_pat, "anonymous") == 0
 837                         || strcmp(b->a_dn_pat, "self") == 0 )
 838                 {
 839                         fprintf( stderr, " %s", b->a_dn_pat );
 840
 841                 } else {
 842                         fprintf( stderr, " dn=%s", b->a_dn_pat );
 843                 }
 844         }
 845
 846         if ( b->a_dn_at != NULL ) {
 847                 fprintf( stderr, " dnattr=%s", b->a_dn_at );
 848         }
 849
 850         if ( b->a_group_pat != NULL ) {
 851                 fprintf( stderr, " group: %s", b->a_group_pat );
 852
 853                 if ( b->a_group_oc ) {
 854                         fprintf( stderr, " objectClass: %s", b->a_group_oc );
 855
 856                         if ( b->a_group_at ) {
 857                                 fprintf( stderr, " attributeType: %s", b->a_group_at );
 858                         }
 859                 }
 860     }
 861
 862         if ( b->a_peername_pat != NULL ) {
 863                 fprintf( stderr, " peername=%s", b->a_peername_pat );
 864         }
 865
 866         if ( b->a_sockname_pat != NULL ) {
 867                 fprintf( stderr, " sockname=%s", b->a_sockname_pat );
 868         }
 869
 870         if ( b->a_domain_pat != NULL ) {
 871                 fprintf( stderr, " domain=%s", b->a_domain_pat );
 872         }
 873
 874         if ( b->a_sockurl_pat != NULL ) {
 875                 fprintf( stderr, " sockurl=%s", b->a_sockurl_pat );
 876         }
 877
 878 #ifdef SLAPD_ACI_ENABLED
 879         if ( b->a_aci_at != NULL ) {
 880                 fprintf( stderr, " aci=%s", b->a_aci_at );
 881         }
 882 #endif
 883
 884         fprintf( stderr, " %s%s",
 885                 b->a_dn_self ? "self" : "",
 886                 accessmask2str( b->a_mask, maskbuf ) );
 887
 888         if( b->a_type == ACL_BREAK ) {
 889                 fprintf( stderr, " break" );
 890
 891         } else if( b->a_type == ACL_CONTINUE ) {
 892                 fprintf( stderr, " continue" );
 893
 894         } else if( b->a_type != ACL_STOP ) {
 895                 fprintf( stderr, " unknown-control" );
 896         }
 897
 898         fprintf( stderr, "\n" );
 899 }
 900
 901
 902 static void
 903 print_acl( Backend *be, AccessControl *a )
 904 {
 905         int             to = 0;
 906         Access  *b;
 907
 908         fprintf( stderr, "%s ACL: access to",
 909                 be == NULL ? "Global" : "Backend" );
 910
 911         if ( a->acl_dn_pat != NULL ) {
 912                 to++;
 913                 fprintf( stderr, " dn=%s\n",
 914                         a->acl_dn_pat );
 915         }
 916
 917         if ( a->acl_filter != NULL ) {
 918                 to++;
 919                 fprintf( stderr, " filter=" );
 920                 filter_print( a->acl_filter );
 921                 fprintf( stderr, "\n" );
 922         }
 923
 924         if ( a->acl_attrs != NULL ) {
 925                 int     i, first = 1;
 926                 to++;
 927
 928                 fprintf( stderr, " attrs=" );
 929                 for ( i = 0; a->acl_attrs[i] != NULL; i++ ) {
 930                         if ( ! first ) {
 931                                 fprintf( stderr, "," );
 932                         }
 933                         fprintf( stderr, a->acl_attrs[i] );
 934                         first = 0;
 935                 }
 936                 fprintf(  stderr, "\n" );
 937         }
 938
 939         if( !to ) {
 940                 fprintf( stderr, " *\n" );
 941         }
 942
 943         for ( b = a->acl_access; b != NULL; b = b->a_next ) {
 944                 print_access( b );
 945         }
 946
 947         fprintf( stderr, "\n" );
 948 }
 949
 950 #endif /* LDAP_DEBUG */