1 /* aclparse.c - routines to parse and check acl's */
4 * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
5 * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
14 #include <ac/socket.h>
15 #include <ac/string.h>
16 #include <ac/unistd.h>
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));
25 static void print_acl(Backend *be, AccessControl *a);
26 static void print_access(Access *b);
30 regtest(const char *fname, int lineno, char *pat) {
46 for (size = 0, flag = 0; (size < sizeof(buf)) && *sp; sp++) {
48 if (*sp == '$'|| (*sp >= '0' && *sp <= '9')) {
65 if ( size >= (sizeof(buf)-1) ) {
67 "%s: line %d: regular expression \"%s\" too large\n",
72 if ((e = regcomp(&re, buf, REG_EXTENDED|REG_ICASE))) {
74 regerror(e, &re, error, sizeof(error));
76 "%s: line %d: regular expression \"%s\" bad because of %s\n",
77 fname, lineno, pat, error );
98 #ifdef SLAPD_SCHEMA_NOT_COMPAT
101 static AttributeDescription *member = NULL;
102 static AttributeDescription *aci = NULL;
106 for ( i = 1; i < argc; i++ ) {
107 /* to clause - select which entries are protected */
108 if ( strcasecmp( argv[i], "to" ) == 0 ) {
111 "%s: line %d: only one to clause allowed in access line\n",
115 a = (AccessControl *) ch_calloc( 1, sizeof(AccessControl) );
116 a->acl_filter = NULL;
117 a->acl_dn_pat = NULL;
119 a->acl_access = NULL;
121 for ( ++i; i < argc; i++ ) {
122 if ( strcasecmp( argv[i], "by" ) == 0 ) {
127 if ( strcasecmp( argv[i], "*" ) == 0 ) {
128 if( a->acl_dn_pat != NULL ) {
130 "%s: line %d: dn pattern"
131 " already specified in to clause.\n",
136 a->acl_dn_pat = ch_strdup( "*" );
140 split( argv[i], '=', &left, &right );
142 if ( strcasecmp( left, "dn" ) == 0 ) {
143 if( a->acl_dn_pat != NULL ) {
145 "%s: line %d: dn pattern"
146 " already specified in to clause.\n",
151 if ( right == NULL ) {
153 "%s: line %d: missing \"=\" in \"%s\" in to clause\n",
154 fname, lineno, left );
158 if( *right == '\0' ) {
159 a->acl_dn_pat = ch_strdup("^$");
161 } else if ( strcmp(right, "*") == 0
162 || strcmp(right, ".*") == 0
163 || strcmp(right, ".*$") == 0
164 || strcmp(right, "^.*") == 0
165 || strcmp(right, "^.*$$") == 0
166 || strcmp(right, ".*$$") == 0
167 || strcmp(right, "^.*$$") == 0 )
169 a->acl_dn_pat = ch_strdup( "*" );
172 a->acl_dn_pat = ch_strdup( right );
178 if ( right == NULL || *right == '\0' ) {
180 "%s: line %d: missing \"=\" in (or value after) \"%s\" in to clause\n",
181 fname, lineno, left );
185 if ( strcasecmp( left, "filter" ) == 0 ) {
186 if ( (a->acl_filter = str2filter(
189 "%s: line %d: bad filter \"%s\" in to clause\n",
190 fname, lineno, right );
194 } else if ( strncasecmp( left, "attr", 4 ) == 0 ) {
197 alist = str2charray( right, "," );
198 charray_merge( &a->acl_attrs, alist );
199 charray_free( alist );
203 "%s: line %d: expecting <what> got \"%s\"\n",
204 fname, lineno, left );
209 if ( a->acl_dn_pat != NULL && strcmp(a->acl_dn_pat, "*") == 0) {
210 free( a->acl_dn_pat );
211 a->acl_dn_pat = NULL;
214 if( a->acl_dn_pat != NULL ) {
215 int e = regcomp( &a->acl_dn_re, a->acl_dn_pat,
216 REG_EXTENDED | REG_ICASE );
219 regerror( e, &a->acl_dn_re, buf, sizeof(buf) );
221 "%s: line %d: regular expression \"%s\" bad because of %s\n",
222 fname, lineno, right, buf );
227 /* by clause - select who has what access to entries */
228 } else if ( strcasecmp( argv[i], "by" ) == 0 ) {
231 "%s: line %d: to clause required before by clause in access line\n",
237 * by clause consists of <who> and <access>
240 b = (Access *) ch_calloc( 1, sizeof(Access) );
242 ACL_INVALIDATE( b->a_mask );
246 "%s: line %d: premature eol: expecting <who>\n",
252 for ( ; i < argc; i++ ) {
254 split( argv[i], '=', &left, &right );
256 if ( strcasecmp( argv[i], "*" ) == 0 ) {
257 pat = ch_strdup( "*" );
259 } else if ( strcasecmp( argv[i], "anonymous" ) == 0 ) {
260 pat = ch_strdup( "anonymous" );
262 } else if ( strcasecmp( argv[i], "self" ) == 0 ) {
263 pat = ch_strdup( "self" );
265 } else if ( strcasecmp( argv[i], "users" ) == 0 ) {
266 pat = ch_strdup( "users" );
268 } else if ( strcasecmp( left, "dn" ) == 0 ) {
269 if( right == NULL ) {
271 pat = ch_strdup( "users" );
273 } else if (*right == '\0' ) {
275 pat = ch_strdup( "anonymous" );
277 } else if ( strcmp( right, "*" ) == 0 ) {
279 /* any or users? any for now */
280 pat = ch_strdup( "users" );
282 } else if ( strcmp( right, ".+" ) == 0
283 || strcmp( right, "^.+" ) == 0
284 || strcmp( right, ".+$" ) == 0
285 || strcmp( right, "^.+$" ) == 0
286 || strcmp( right, ".+$$" ) == 0
287 || strcmp( right, "^.+$$" ) == 0 )
289 pat = ch_strdup( "users" );
291 } else if ( strcmp( right, ".*" ) == 0
292 || strcmp( right, "^.*" ) == 0
293 || strcmp( right, ".*$" ) == 0
294 || strcmp( right, "^.*$" ) == 0
295 || strcmp( right, ".*$$" ) == 0
296 || strcmp( right, "^.*$$" ) == 0 )
298 pat = ch_strdup( "*" );
301 regtest(fname, lineno, right);
302 pat = ch_strdup( right );
310 if( b->a_dn_pat != NULL ) {
312 "%s: line %d: dn pattern already specified.\n",
321 if ( strcasecmp( left, "dnattr" ) == 0 ) {
322 if( b->a_dn_at != NULL ) {
324 "%s: line %d: dnattr already specified.\n",
329 #ifdef SLAPD_SCHEMA_NOT_COMPAT
330 rc = slap_str2ad( right, &b->a_dn_at, &text );
332 if( rc != LDAP_SUCCESS ) {
334 "%s: line %d: dnattr \"%s\": %s\n",
335 fname, lineno, right, text );
339 #ifdef SLAPD_OID_DN_SYNTAX
340 if( strcmp( b->a_dn_at->ad_type->sat_syntax_oid,
341 SLAPD_OID_DN_SYNTAX ) != 0 )
344 "%s: line %d: dnattr attribute type not of DN syntax.\n",
350 b->a_dn_at = ch_strdup( right );
355 if ( strncasecmp( left, "group", sizeof("group")-1 ) == 0 ) {
359 if( b->a_group_pat != NULL ) {
361 "%s: line %d: group pattern already specified.\n",
366 /* format of string is "group/objectClassValue/groupAttrName" */
367 if ((value = strchr(left, '/')) != NULL) {
370 && (name = strchr(value, '/')) != NULL)
376 regtest(fname, lineno, right);
377 b->a_group_pat = ch_strdup( right );
379 if (value && *value) {
380 b->a_group_oc = ch_strdup(value);
383 b->a_group_oc = ch_strdup("groupOfNames");
387 #ifdef SLAPD_SCHEMA_NOT_COMPAT
388 rc = slap_str2ad( right, &b->a_group_at, &text );
390 if( rc != LDAP_SUCCESS ) {
392 "%s: line %d: group \"%s\": %s\n",
393 fname, lineno, right, text );
397 b->a_group_at = ch_strdup(name);
402 #ifdef SLAPD_SCHEMA_NOT_COMPAT
403 b->a_group_at = member;
405 b->a_group_at = ch_strdup("member");
409 #ifdef SLAPD_SCHEMA_NOT_COMPAT
410 if( b->a_group_at == NULL ) {
412 "%s: line %d: group attribute type undefined.\n",
417 #ifdef SLAPD_OID_DN_SYNTAX
418 if( strcmp( b->a_group_at->ad_type->sat_syntax_oid,
419 SLAPD_OID_DN_SYNTAX ) != 0 )
422 "%s: line %d: group attribute type not of DN syntax.\n",
426 #endif /* SLAPD_OID_DN_SYNTAX */
427 #endif /* SLAPD_SCHEMA_NOT_COMPAT */
431 if ( strcasecmp( left, "peername" ) == 0 ) {
432 if( b->a_peername_pat != NULL ) {
434 "%s: line %d: peername pattern already specified.\n",
439 regtest(fname, lineno, right);
440 b->a_peername_pat = ch_strdup( right );
444 if ( strcasecmp( left, "sockname" ) == 0 ) {
445 if( b->a_sockname_pat != NULL ) {
447 "%s: line %d: sockname pattern already specified.\n",
452 regtest(fname, lineno, right);
453 b->a_sockname_pat = ch_strdup( right );
457 if ( strcasecmp( left, "domain" ) == 0 ) {
458 if( b->a_domain_pat != NULL ) {
460 "%s: line %d: domain pattern already specified.\n",
465 regtest(fname, lineno, right);
466 b->a_domain_pat = ch_strdup( right );
470 if ( strcasecmp( left, "sockurl" ) == 0 ) {
471 if( b->a_sockurl_pat != NULL ) {
473 "%s: line %d: sockurl pattern already specified.\n",
478 regtest(fname, lineno, right);
479 b->a_sockurl_pat = ch_strdup( right );
483 #ifdef SLAPD_ACI_ENABLED
484 if ( strcasecmp( left, "aci" ) == 0 ) {
485 if( b->a_aci_at != NULL ) {
487 "%s: line %d: aci attribute already specified.\n",
492 #ifdef SLAPD_SCHEMA_NOT_COMPAT
493 if ( right != NULL && *right != '\0' ) {
494 rc = slap_str2ad( right, &b->a_aci_at, &text );
496 if( rc != LDAP_SUCCESS ) {
498 "%s: line %d: aci \"%s\": %s\n",
499 fname, lineno, right, text );
506 if( b->a_aci_at == NULL ) {
508 "%s: line %d: aci attribute type undefined.\n",
513 if( strcmp( b->a_aci_at->ad_type->sat_syntax_oid,
514 SLAPD_OID_ACI_SYNTAX ) != 0 )
517 "%s: line %d: aci attribute type not of ACI syntax.\n",
522 if ( right != NULL && *right != '\0' ) {
523 b->a_aci_at = ch_strdup( right );
525 b->a_aci_at = ch_strdup( SLAPD_ACI_DEFAULT_ATTR );
530 #endif /* SLAPD_ACI_ENABLED */
532 if( right != NULL ) {
539 if( i == argc || ( strcasecmp( left, "stop" ) == 0 )) {
540 /* out of arguments or plain stop */
542 ACL_PRIV_ASSIGN(b->a_mask, ACL_PRIV_ADDITIVE);
543 b->a_type = ACL_STOP;
545 access_append( &a->acl_access, b );
549 if( strcasecmp( left, "continue" ) == 0 ) {
552 ACL_PRIV_ASSIGN(b->a_mask, ACL_PRIV_ADDITIVE);
553 b->a_type = ACL_CONTINUE;
555 access_append( &a->acl_access, b );
559 if( strcasecmp( left, "break" ) == 0 ) {
562 ACL_PRIV_ASSIGN(b->a_mask, ACL_PRIV_ADDITIVE);
563 b->a_type = ACL_BREAK;
565 access_append( &a->acl_access, b );
569 if ( strcasecmp( left, "by" ) == 0 ) {
570 /* we've gone too far */
572 ACL_PRIV_ASSIGN(b->a_mask, ACL_PRIV_ADDITIVE);
573 b->a_type = ACL_STOP;
575 access_append( &a->acl_access, b );
580 if( strncasecmp( left, "self", 4 ) == 0 ) {
582 ACL_PRIV_ASSIGN( b->a_mask, str2accessmask( &left[4] ) );
585 ACL_PRIV_ASSIGN( b->a_mask, str2accessmask( left ) );
588 if( ACL_IS_INVALID( b->a_mask ) ) {
590 "%s: line %d: expecting <access> got \"%s\"\n",
591 fname, lineno, left );
595 b->a_type = ACL_STOP;
598 /* out of arguments or plain stop */
599 access_append( &a->acl_access, b );
603 if( strcasecmp( argv[i], "continue" ) == 0 ) {
605 b->a_type = ACL_CONTINUE;
607 } else if( strcasecmp( argv[i], "break" ) == 0 ) {
609 b->a_type = ACL_BREAK;
611 } else if ( strcasecmp( argv[i], "stop" ) != 0 ) {
616 access_append( &a->acl_access, b );
620 "%s: line %d: expecting \"to\" or \"by\" got \"%s\"\n",
621 fname, lineno, argv[i] );
626 /* if we have no real access clause, complain and do nothing */
629 "%s: line %d: warning: no access clause(s) specified in access line\n",
634 if (ldap_debug & LDAP_DEBUG_ACL)
638 if ( a->acl_access == NULL ) {
640 "%s: line %d: warning: no by clause(s) specified in access line\n",
645 acl_append( &be->be_acl, a );
647 acl_append( &global_acl, a );
653 accessmask2str( slap_access_mask_t mask, char *buf )
657 assert( buf != NULL );
659 if ( ACL_IS_INVALID( mask ) ) {
665 if ( ACL_IS_LEVEL( mask ) ) {
666 if ( ACL_LVL_IS_NONE(mask) ) {
667 strcat( buf, "none" );
669 } else if ( ACL_LVL_IS_AUTH(mask) ) {
670 strcat( buf, "auth" );
672 } else if ( ACL_LVL_IS_COMPARE(mask) ) {
673 strcat( buf, "compare" );
675 } else if ( ACL_LVL_IS_SEARCH(mask) ) {
676 strcat( buf, "search" );
678 } else if ( ACL_LVL_IS_READ(mask) ) {
679 strcat( buf, "read" );
681 } else if ( ACL_LVL_IS_WRITE(mask) ) {
682 strcat( buf, "write" );
684 strcat( buf, "unknown" );
690 if( ACL_IS_ADDITIVE( mask ) ) {
693 } else if( ACL_IS_SUBTRACTIVE( mask ) ) {
700 if ( ACL_PRIV_ISSET(mask, ACL_PRIV_WRITE) ) {
705 if ( ACL_PRIV_ISSET(mask, ACL_PRIV_READ) ) {
710 if ( ACL_PRIV_ISSET(mask, ACL_PRIV_SEARCH) ) {
715 if ( ACL_PRIV_ISSET(mask, ACL_PRIV_COMPARE) ) {
720 if ( ACL_PRIV_ISSET(mask, ACL_PRIV_AUTH) ) {
725 if ( none && ACL_PRIV_ISSET(mask, ACL_PRIV_NONE) ) {
734 if ( ACL_IS_LEVEL( mask ) ) {
741 str2accessmask( const char *str )
743 slap_access_mask_t mask;
745 if( !isalpha(str[0]) ) {
748 if ( str[0] == '=' ) {
751 } else if( str[0] == '+' ) {
752 ACL_PRIV_ASSIGN(mask, ACL_PRIV_ADDITIVE);
754 } else if( str[0] == '-' ) {
755 ACL_PRIV_ASSIGN(mask, ACL_PRIV_SUBSTRACTIVE);
758 ACL_INVALIDATE(mask);
762 for( i=1; str[i] != '\0'; i++ ) {
763 if( TOLOWER(str[i]) == 'w' ) {
764 ACL_PRIV_SET(mask, ACL_PRIV_WRITE);
766 } else if( TOLOWER(str[i]) == 'r' ) {
767 ACL_PRIV_SET(mask, ACL_PRIV_READ);
769 } else if( TOLOWER(str[i]) == 's' ) {
770 ACL_PRIV_SET(mask, ACL_PRIV_SEARCH);
772 } else if( TOLOWER(str[i]) == 'c' ) {
773 ACL_PRIV_SET(mask, ACL_PRIV_COMPARE);
775 } else if( TOLOWER(str[i]) == 'x' ) {
776 ACL_PRIV_SET(mask, ACL_PRIV_AUTH);
778 } else if( str[i] != '0' ) {
779 ACL_INVALIDATE(mask);
787 if ( strcasecmp( str, "none" ) == 0 ) {
788 ACL_LVL_ASSIGN_NONE(mask);
790 } else if ( strcasecmp( str, "auth" ) == 0 ) {
791 ACL_LVL_ASSIGN_AUTH(mask);
793 } else if ( strcasecmp( str, "compare" ) == 0 ) {
794 ACL_LVL_ASSIGN_COMPARE(mask);
796 } else if ( strcasecmp( str, "search" ) == 0 ) {
797 ACL_LVL_ASSIGN_SEARCH(mask);
799 } else if ( strcasecmp( str, "read" ) == 0 ) {
800 ACL_LVL_ASSIGN_READ(mask);
802 } else if ( strcasecmp( str, "write" ) == 0 ) {
803 ACL_LVL_ASSIGN_WRITE(mask);
806 ACL_INVALIDATE( mask );
815 fprintf( stderr, "\n"
816 "<access clause> ::= access to <what> "
817 "[ by <who> <access> <control> ]+ \n"
818 "<what> ::= * | [dn=<regex>] [filter=<ldapfilter>] [attrs=<attrlist>]\n"
819 "<attrlist> ::= <attr> | <attr> , <attrlist>\n"
820 "<attr> ::= <attrname> | entry | children\n"
821 "<who> ::= [ * | anonymous | users | self | dn=<regex> ]\n"
822 "\t[dnattr=<attrname>]\n"
823 "\t[group[/<objectclass>[/<attrname>]]=<regex>]\n"
824 "\t[peername=<regex>] [sockname=<regex>]\n"
825 "\t[domain=<regex>] [sockurl=<regex>]\n"
826 #ifdef SLAPD_ACI_ENABLED
827 "\t[aci=<attrname>]\n"
829 "<access> ::= [self]{<level>|<priv>}\n"
830 "<level> ::= none | auth | compare | search | read | write\n"
831 "<priv> ::= {=|+|-}{w|r|s|c|x}+\n"
832 "<control> ::= [ stop | continue | break ]\n"
834 exit( EXIT_FAILURE );
846 if ( (*right = strchr( line, splitchar )) != NULL ) {
847 *((*right)++) = '\0';
852 access_append( Access **l, Access *a )
854 for ( ; *l != NULL; l = &(*l)->a_next )
861 acl_append( AccessControl **l, AccessControl *a )
863 for ( ; *l != NULL; l = &(*l)->acl_next )
870 access2str( slap_access_t access )
872 if ( access == ACL_NONE ) {
875 } else if ( access == ACL_AUTH ) {
878 } else if ( access == ACL_COMPARE ) {
881 } else if ( access == ACL_SEARCH ) {
884 } else if ( access == ACL_READ ) {
887 } else if ( access == ACL_WRITE ) {
895 str2access( const char *str )
897 if ( strcasecmp( str, "none" ) == 0 ) {
900 } else if ( strcasecmp( str, "auth" ) == 0 ) {
903 } else if ( strcasecmp( str, "compare" ) == 0 ) {
906 } else if ( strcasecmp( str, "search" ) == 0 ) {
909 } else if ( strcasecmp( str, "read" ) == 0 ) {
912 } else if ( strcasecmp( str, "write" ) == 0 ) {
916 return( ACL_INVALID_ACCESS );
922 print_access( Access *b )
924 char maskbuf[ACCESSMASK_MAXLEN];
926 fprintf( stderr, "\tby" );
928 if ( b->a_dn_pat != NULL ) {
929 if( strcmp(b->a_dn_pat, "*") == 0
930 || strcmp(b->a_dn_pat, "users") == 0
931 || strcmp(b->a_dn_pat, "anonymous") == 0
932 || strcmp(b->a_dn_pat, "self") == 0 )
934 fprintf( stderr, " %s", b->a_dn_pat );
937 fprintf( stderr, " dn=%s", b->a_dn_pat );
941 if ( b->a_dn_at != NULL ) {
942 fprintf( stderr, " dnattr=%s", b->a_dn_at );
945 if ( b->a_group_pat != NULL ) {
946 fprintf( stderr, " group: %s", b->a_group_pat );
948 if ( b->a_group_oc ) {
949 fprintf( stderr, " objectClass: %s", b->a_group_oc );
951 if ( b->a_group_at ) {
952 fprintf( stderr, " attributeType: %s", b->a_group_at );
957 if ( b->a_peername_pat != NULL ) {
958 fprintf( stderr, " peername=%s", b->a_peername_pat );
961 if ( b->a_sockname_pat != NULL ) {
962 fprintf( stderr, " sockname=%s", b->a_sockname_pat );
965 if ( b->a_domain_pat != NULL ) {
966 fprintf( stderr, " domain=%s", b->a_domain_pat );
969 if ( b->a_sockurl_pat != NULL ) {
970 fprintf( stderr, " sockurl=%s", b->a_sockurl_pat );
973 #ifdef SLAPD_ACI_ENABLED
974 if ( b->a_aci_at != NULL ) {
975 fprintf( stderr, " aci=%s", b->a_aci_at );
979 fprintf( stderr, " %s%s",
980 b->a_dn_self ? "self" : "",
981 accessmask2str( b->a_mask, maskbuf ) );
983 if( b->a_type == ACL_BREAK ) {
984 fprintf( stderr, " break" );
986 } else if( b->a_type == ACL_CONTINUE ) {
987 fprintf( stderr, " continue" );
989 } else if( b->a_type != ACL_STOP ) {
990 fprintf( stderr, " unknown-control" );
993 fprintf( stderr, "\n" );
998 print_acl( Backend *be, AccessControl *a )
1003 fprintf( stderr, "%s ACL: access to",
1004 be == NULL ? "Global" : "Backend" );
1006 if ( a->acl_dn_pat != NULL ) {
1008 fprintf( stderr, " dn=%s\n",
1012 if ( a->acl_filter != NULL ) {
1014 fprintf( stderr, " filter=" );
1015 filter_print( a->acl_filter );
1016 fprintf( stderr, "\n" );
1019 if ( a->acl_attrs != NULL ) {
1023 fprintf( stderr, " attrs=" );
1024 for ( i = 0; a->acl_attrs[i] != NULL; i++ ) {
1026 fprintf( stderr, "," );
1028 fprintf( stderr, a->acl_attrs[i] );
1031 fprintf( stderr, "\n" );
1035 fprintf( stderr, " *\n" );
1038 for ( b = a->acl_access; b != NULL; b = b->a_next ) {
1042 fprintf( stderr, "\n" );
1045 #endif /* LDAP_DEBUG */