3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 1998-2005 The OpenLDAP Foundation.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted only as authorized by the OpenLDAP
12 * A copy of this license is available in the file LICENSE in the
13 * top-level directory of the distribution or, alternatively, at
14 * <http://www.OpenLDAP.org/license.html>.
16 /* Portions Copyright (c) 1990 Regents of the University of Michigan.
17 * All rights reserved.
19 /* Portions Copyright (C) The Internet Society (1997).
20 * ASN.1 fragments are from RFC 2251; see RFC for full legal notices.
27 #include <ac/stdlib.h>
29 #include <ac/socket.h>
30 #include <ac/string.h>
35 static int put_simple_vrFilter LDAP_P((
39 static int put_vrFilter_list LDAP_P((
43 static char *put_complex_filter LDAP_P((
49 static int put_simple_filter LDAP_P((
53 static int put_substring_filter LDAP_P((
58 static int put_filter_list LDAP_P((
63 static int ldap_is_oid ( const char *str )
67 if( LDAP_ALPHA( str[0] )) {
68 for( i=1; str[i]; i++ ) {
69 if( !LDAP_LDH( str[i] )) {
75 } else if LDAP_DIGIT( str[0] ) {
77 for( i=1; str[i]; i++ ) {
78 if( LDAP_DIGIT( str[i] )) {
81 } else if ( str[i] == '.' ) {
83 if( ++dot > 1 ) return 0;
95 static int ldap_is_desc ( const char *str )
99 if( LDAP_ALPHA( str[0] )) {
100 for( i=1; str[i]; i++ ) {
101 if( str[i] == ';' ) {
106 if( !LDAP_LDH( str[i] )) {
112 } else if LDAP_DIGIT( str[0] ) {
114 for( i=1; str[i]; i++ ) {
115 if( str[i] == ';' ) {
121 if( LDAP_DIGIT( str[i] )) {
124 } else if ( str[i] == '.' ) {
126 if( ++dot > 1 ) return 0;
138 if( !LDAP_LDH( str[0] )) {
141 for( i=1; str[i]; i++ ) {
142 if( str[i] == ';' ) {
146 if( !LDAP_LDH( str[i] )) {
154 find_right_paren( char *s )
160 while ( *s && balance ) {
164 } else if ( *s == ')' ) {
169 escape = ( *s == '\\' && !escape );
174 return *s ? s : NULL;
177 static int hex2value( int c )
179 if( c >= '0' && c <= '9' ) {
183 if( c >= 'A' && c <= 'F' ) {
184 return c + (10 - (int) 'A');
187 if( c >= 'a' && c <= 'f' ) {
188 return c + (10 - (int) 'a');
195 ldap_pvt_find_wildcard( const char *s )
199 case '*': /* found wildcard */
207 if( s[1] == '\0' ) return NULL;
209 if( LDAP_HEX( s[1] ) && LDAP_HEX( s[2] ) ) {
212 } else switch( s[1] ) {
216 /* allow RFC 1960 escapes */
229 /* unescape filter value */
230 /* support both LDAP v2 and v3 escapes */
231 /* output can include nul characters! */
233 ldap_pvt_filter_value_unescape( char *fval )
238 for( r=v=0; fval[v] != '\0'; v++ ) {
249 if ( fval[v] == '\0' ) {
250 /* escape at end of string */
254 if (( v1 = hex2value( fval[v] )) >= 0 ) {
256 if (( v2 = hex2value( fval[v+1] )) < 0 ) {
257 /* must be two digit code */
261 fval[r++] = v1 * 16 + v2;
290 put_complex_filter( BerElement *ber, char *str, ber_tag_t tag, int not )
295 * We have (x(filter)...) with str sitting on
296 * the x. We have to find the paren matching
297 * the one before the x and put the intervening
298 * filters by calling put_filter_list().
301 /* put explicit tag */
302 if ( ber_printf( ber, "t{" /*"}"*/, tag ) == -1 ) {
307 if ( (next = find_right_paren( str )) == NULL ) {
312 if ( put_filter_list( ber, str, tag ) == -1 ) {
319 /* flush explicit tagged thang */
320 if ( ber_printf( ber, /*"{"*/ "N}" ) == -1 ) {
328 ldap_pvt_put_filter( BerElement *ber, const char *str_in )
334 int parens, balance, escape;
337 * A Filter looks like this:
338 * Filter ::= CHOICE {
339 * and [0] SET OF Filter,
340 * or [1] SET OF Filter,
342 * equalityMatch [3] AttributeValueAssertion,
343 * substrings [4] SubstringFilter,
344 * greaterOrEqual [5] AttributeValueAssertion,
345 * lessOrEqual [6] AttributeValueAssertion,
346 * present [7] AttributeType,
347 * approxMatch [8] AttributeValueAssertion,
348 * extensibleMatch [9] MatchingRuleAssertion -- LDAPv3
351 * SubstringFilter ::= SEQUENCE {
352 * type AttributeType,
353 * SEQUENCE OF CHOICE {
354 * initial [0] IA5String,
356 * final [2] IA5String
360 * MatchingRuleAssertion ::= SEQUENCE { -- LDAPv3
361 * matchingRule [1] MatchingRuleId OPTIONAL,
362 * type [2] AttributeDescription OPTIONAL,
363 * matchValue [3] AssertionValue,
364 * dnAttributes [4] BOOLEAN DEFAULT FALSE }
366 * Note: tags in a choice are always explicit
369 Debug( LDAP_DEBUG_TRACE, "put_filter: \"%s\"\n", str_in, 0, 0 );
371 freeme = LDAP_STRDUP( str_in );
372 if( freeme == NULL ) return LDAP_NO_MEMORY;
383 while( LDAP_SPACE( *str ) ) str++;
387 Debug( LDAP_DEBUG_TRACE, "put_filter: AND\n",
390 str = put_complex_filter( ber, str,
391 LDAP_FILTER_AND, 0 );
401 Debug( LDAP_DEBUG_TRACE, "put_filter: OR\n",
404 str = put_complex_filter( ber, str,
415 Debug( LDAP_DEBUG_TRACE, "put_filter: NOT\n",
418 str = put_complex_filter( ber, str,
419 LDAP_FILTER_NOT, 0 );
429 Debug( LDAP_DEBUG_TRACE, "put_filter: simple\n",
436 while ( *next && balance ) {
438 if ( *next == '(' ) {
440 } else if ( *next == ')' ) {
445 if ( *next == '\\' && ! escape ) {
451 if ( balance ) next++;
454 if ( balance != 0 ) {
461 if ( put_simple_filter( ber, str ) == -1 ) {
466 *next++ = /*'('*/ ')';
475 Debug( LDAP_DEBUG_TRACE, "put_filter: end\n",
477 if ( ber_printf( ber, /*"["*/ "]" ) == -1 ) {
489 default: /* assume it's a simple type=value filter */
490 Debug( LDAP_DEBUG_TRACE, "put_filter: default\n",
492 next = strchr( str, '\0' );
493 if ( put_simple_filter( ber, str ) == -1 ) {
502 rc = parens ? -1 : 0;
510 * Put a list of filters like this "(filter1)(filter2)..."
514 put_filter_list( BerElement *ber, char *str, ber_tag_t tag )
519 Debug( LDAP_DEBUG_TRACE, "put_filter_list \"%s\"\n",
523 while ( *str && LDAP_SPACE( (unsigned char) *str ) ) {
526 if ( *str == '\0' ) break;
528 if ( (next = find_right_paren( str + 1 )) == NULL ) {
533 /* now we have "(filter)" with str pointing to it */
535 if ( ldap_pvt_put_filter( ber, str ) == -1 ) return -1;
539 if( tag == LDAP_FILTER_NOT ) break;
542 if( tag == LDAP_FILTER_NOT && ( next == NULL || *str )) {
559 Debug( LDAP_DEBUG_TRACE, "put_simple_filter: \"%s\"\n",
562 str = LDAP_STRDUP( str );
563 if( str == NULL ) return -1;
565 if ( (s = strchr( str, '=' )) == NULL ) {
574 ftype = LDAP_FILTER_LE;
579 ftype = LDAP_FILTER_GE;
584 ftype = LDAP_FILTER_APPROX;
589 /* RFC2254 extensible filters are off the form:
590 * type [:dn] [:rule] := value
591 * or [:dn]:rule := value
593 ftype = LDAP_FILTER_EXT;
597 char *dn = strchr( str, ':' );
602 rule = strchr( dn, ':' );
606 if ( strcasecmp(dn, "dn") == 0 ) {
607 /* must have attribute */
608 if( !ldap_is_desc( str ) ) {
623 if ( strcasecmp(dn, "dn") != 0 ) {
631 if ( *str == '\0' && ( !rule || *rule == '\0' ) ) {
632 /* must have either type or rule */
636 if ( *str != '\0' && !ldap_is_desc( str ) ) {
640 if ( rule && *rule != '\0' && !ldap_is_oid( rule ) ) {
644 rc = ber_printf( ber, "t{" /*"}"*/, ftype );
646 if( rc != -1 && rule && *rule != '\0' ) {
647 rc = ber_printf( ber, "ts", LDAP_FILTER_EXT_OID, rule );
650 if( rc != -1 && *str != '\0' ) {
651 rc = ber_printf( ber, "ts", LDAP_FILTER_EXT_TYPE, str );
655 ber_slen_t len = ldap_pvt_filter_value_unescape( value );
658 rc = ber_printf( ber, "to",
659 LDAP_FILTER_EXT_VALUE, value, len );
665 if( rc != -1 && dn ) {
666 rc = ber_printf( ber, "tb",
667 LDAP_FILTER_EXT_DNATTRS, (ber_int_t) 1 );
671 rc = ber_printf( ber, /*"{"*/ "N}" );
677 if( !ldap_is_desc( str ) ) {
681 char *nextstar = ldap_pvt_find_wildcard( value );
683 if ( nextstar == NULL ) {
686 } else if ( *nextstar == '\0' ) {
687 ftype = LDAP_FILTER_EQUALITY;
689 } else if ( strcmp( value, "*" ) == 0 ) {
690 ftype = LDAP_FILTER_PRESENT;
693 rc = put_substring_filter( ber, str, value );
699 if( !ldap_is_desc( str ) ) goto done;
701 if ( ftype == LDAP_FILTER_PRESENT ) {
702 rc = ber_printf( ber, "ts", ftype, str );
705 ber_slen_t len = ldap_pvt_filter_value_unescape( value );
708 rc = ber_printf( ber, "t{soN}",
709 ftype, str, value, len );
714 if( rc != -1 ) rc = 0;
720 put_substring_filter( BerElement *ber, char *type, char *val )
724 ber_tag_t ftype = LDAP_FILTER_SUBSTRINGS;
726 Debug( LDAP_DEBUG_TRACE, "put_substring_filter \"%s=%s\"\n",
729 if ( ber_printf( ber, "t{s{" /*"}}"*/, ftype, type ) == -1 ) {
733 for( ; *val; val=nextstar ) {
734 nextstar = ldap_pvt_find_wildcard( val );
736 if ( nextstar == NULL ) {
740 if ( *nextstar == '\0' ) {
741 ftype = LDAP_SUBSTRING_FINAL;
744 if ( gotstar++ == 0 ) {
745 ftype = LDAP_SUBSTRING_INITIAL;
747 ftype = LDAP_SUBSTRING_ANY;
751 if ( *val != '\0' || ftype == LDAP_SUBSTRING_ANY ) {
752 ber_slen_t len = ldap_pvt_filter_value_unescape( val );
758 if ( ber_printf( ber, "to", ftype, val, len ) == -1 ) {
764 if ( ber_printf( ber, /*"{{"*/ "N}N}" ) == -1 ) {
772 put_vrFilter( BerElement *ber, const char *str_in )
778 int parens, balance, escape;
781 * A ValuesReturnFilter looks like this:
783 * ValuesReturnFilter ::= SEQUENCE OF SimpleFilterItem
784 * SimpleFilterItem ::= CHOICE {
785 * equalityMatch [3] AttributeValueAssertion,
786 * substrings [4] SubstringFilter,
787 * greaterOrEqual [5] AttributeValueAssertion,
788 * lessOrEqual [6] AttributeValueAssertion,
789 * present [7] AttributeType,
790 * approxMatch [8] AttributeValueAssertion,
791 * extensibleMatch [9] SimpleMatchingAssertion -- LDAPv3
794 * SubstringFilter ::= SEQUENCE {
795 * type AttributeType,
796 * SEQUENCE OF CHOICE {
797 * initial [0] IA5String,
799 * final [2] IA5String
803 * SimpleMatchingAssertion ::= SEQUENCE { -- LDAPv3
804 * matchingRule [1] MatchingRuleId OPTIONAL,
805 * type [2] AttributeDescription OPTIONAL,
806 * matchValue [3] AssertionValue }
809 Debug( LDAP_DEBUG_TRACE, "put_vrFilter: \"%s\"\n", str_in, 0, 0 );
811 freeme = LDAP_STRDUP( str_in );
812 if( freeme == NULL ) return LDAP_NO_MEMORY;
823 while( LDAP_SPACE( *str ) ) str++;
827 if ( (next = find_right_paren( str )) == NULL ) {
834 if ( put_vrFilter_list( ber, str ) == -1 ) {
849 Debug( LDAP_DEBUG_TRACE, "put_vrFilter: simple\n",
856 while ( *next && balance ) {
858 if ( *next == '(' ) {
860 } else if ( *next == ')' ) {
865 if ( *next == '\\' && ! escape ) {
871 if ( balance ) next++;
874 if ( balance != 0 ) {
881 if ( put_simple_vrFilter( ber, str ) == -1 ) {
886 *next++ = /*'('*/ ')';
895 Debug( LDAP_DEBUG_TRACE, "put_vrFilter: end\n",
897 if ( ber_printf( ber, /*"["*/ "]" ) == -1 ) {
909 default: /* assume it's a simple type=value filter */
910 Debug( LDAP_DEBUG_TRACE, "put_vrFilter: default\n",
912 next = strchr( str, '\0' );
913 if ( put_simple_vrFilter( ber, str ) == -1 ) {
922 rc = parens ? -1 : 0;
930 ldap_put_vrFilter( BerElement *ber, const char *str_in )
934 if ( ber_printf( ber, "{" /*"}"*/ ) == -1 ) {
938 rc = put_vrFilter( ber, str_in );
940 if ( ber_printf( ber, /*"{"*/ "N}" ) == -1 ) {
948 put_vrFilter_list( BerElement *ber, char *str )
953 Debug( LDAP_DEBUG_TRACE, "put_vrFilter_list \"%s\"\n",
957 while ( *str && LDAP_SPACE( (unsigned char) *str ) ) {
960 if ( *str == '\0' ) break;
962 if ( (next = find_right_paren( str + 1 )) == NULL ) {
967 /* now we have "(filter)" with str pointing to it */
969 if ( put_vrFilter( ber, str ) == -1 ) return -1;
987 Debug( LDAP_DEBUG_TRACE, "put_simple_vrFilter: \"%s\"\n",
990 str = LDAP_STRDUP( str );
991 if( str == NULL ) return -1;
993 if ( (s = strchr( str, '=' )) == NULL ) {
1002 ftype = LDAP_FILTER_LE;
1007 ftype = LDAP_FILTER_GE;
1012 ftype = LDAP_FILTER_APPROX;
1017 /* According to ValuesReturnFilter control definition
1018 * extensible filters are off the form:
1019 * type [:rule] := value
1022 ftype = LDAP_FILTER_EXT;
1026 char *rule = strchr( str, ':' );
1028 if( rule == NULL ) {
1029 /* must have attribute */
1030 if( !ldap_is_desc( str ) ) {
1038 if ( *str == '\0' && ( !rule || *rule == '\0' ) ) {
1039 /* must have either type or rule */
1043 if ( *str != '\0' && !ldap_is_desc( str ) ) {
1047 if ( rule && *rule != '\0' && !ldap_is_oid( rule ) ) {
1051 rc = ber_printf( ber, "t{" /*"}"*/, ftype );
1053 if( rc != -1 && rule && *rule != '\0' ) {
1054 rc = ber_printf( ber, "ts", LDAP_FILTER_EXT_OID, rule );
1057 if( rc != -1 && *str != '\0' ) {
1058 rc = ber_printf( ber, "ts", LDAP_FILTER_EXT_TYPE, str );
1062 ber_slen_t len = ldap_pvt_filter_value_unescape( value );
1065 rc = ber_printf( ber, "to",
1066 LDAP_FILTER_EXT_VALUE, value, len );
1073 rc = ber_printf( ber, /*"{"*/ "N}" );
1079 if( !ldap_is_desc( str ) ) {
1083 char *nextstar = ldap_pvt_find_wildcard( value );
1085 if ( nextstar == NULL ) {
1088 } else if ( *nextstar == '\0' ) {
1089 ftype = LDAP_FILTER_EQUALITY;
1091 } else if ( strcmp( value, "*" ) == 0 ) {
1092 ftype = LDAP_FILTER_PRESENT;
1095 rc = put_substring_filter( ber, str, value );
1101 if( !ldap_is_desc( str ) ) goto done;
1103 if ( ftype == LDAP_FILTER_PRESENT ) {
1104 rc = ber_printf( ber, "ts", ftype, str );
1107 ber_slen_t len = ldap_pvt_filter_value_unescape( value );
1110 rc = ber_printf( ber, "t{soN}",
1111 ftype, str, value, len );
1116 if( rc != -1 ) rc = 0;