1 /* LIBLDAP url.c -- LDAP URL (RFC 2255) related routines */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 1998-2004 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) 1996 Regents of the University of Michigan.
17 * All rights reserved.
22 * LDAP URLs look like this:
23 * ldap[is]://host:port[/[dn[?[attributes][?[scope][?[filter][?exts]]]]]]
26 * attributes is a comma separated list
27 * scope is one of these three strings: base one sub (default=base)
28 * filter is an string-represented filter as in RFC 2254
30 * e.g., ldap://host:port/dc=com?o,cn?base?(o=openldap)?extension
32 * We also tolerate URLs that look like: <ldapurl> and <URL:ldapurl>
39 #include <ac/stdlib.h>
41 #include <ac/socket.h>
42 #include <ac/string.h>
48 static const char* skip_url_prefix LDAP_P((
51 const char **scheme ));
53 int ldap_pvt_url_scheme2proto( const char *scheme )
57 if( scheme == NULL ) {
61 if( strcmp("ldap", scheme) == 0 ) {
62 return LDAP_PROTO_TCP;
65 if( strcmp("ldapi", scheme) == 0 ) {
66 return LDAP_PROTO_IPC;
69 if( strcmp("ldaps", scheme) == 0 ) {
70 return LDAP_PROTO_TCP;
72 #ifdef LDAP_CONNECTIONLESS
73 if( strcmp("cldap", scheme) == 0 ) {
74 return LDAP_PROTO_UDP;
81 int ldap_pvt_url_scheme_port( const char *scheme, int port )
85 if( port ) return port;
86 if( scheme == NULL ) return port;
88 if( strcmp("ldap", scheme) == 0 ) {
92 if( strcmp("ldapi", scheme) == 0 ) {
96 if( strcmp("ldaps", scheme) == 0 ) {
100 #ifdef LDAP_CONNECTIONLESS
101 if( strcmp("cldap", scheme) == 0 ) {
110 ldap_pvt_url_scheme2tls( const char *scheme )
114 if( scheme == NULL ) {
118 return strcmp("ldaps", scheme) == 0;
122 ldap_is_ldap_url( LDAP_CONST char *url )
131 if( skip_url_prefix( url, &enclosed, &scheme ) == NULL ) {
139 ldap_is_ldaps_url( LDAP_CONST char *url )
148 if( skip_url_prefix( url, &enclosed, &scheme ) == NULL ) {
152 return strcmp(scheme, "ldaps") == 0;
156 ldap_is_ldapi_url( LDAP_CONST char *url )
165 if( skip_url_prefix( url, &enclosed, &scheme ) == NULL ) {
169 return strcmp(scheme, "ldapi") == 0;
172 #ifdef LDAP_CONNECTIONLESS
174 ldap_is_ldapc_url( LDAP_CONST char *url )
183 if( skip_url_prefix( url, &enclosed, &scheme ) == NULL ) {
187 return strcmp(scheme, "cldap") == 0;
195 const char **scheme )
198 * return non-zero if this looks like a LDAP URL; zero if not
199 * if non-zero returned, *urlp will be moved past "ldap://" part of URL
209 /* skip leading '<' (if any) */
217 /* skip leading "URL:" (if any) */
218 if ( strncasecmp( p, LDAP_URL_URLCOLON, LDAP_URL_URLCOLON_LEN ) == 0 ) {
219 p += LDAP_URL_URLCOLON_LEN;
222 /* check for "ldap://" prefix */
223 if ( strncasecmp( p, LDAP_URL_PREFIX, LDAP_URL_PREFIX_LEN ) == 0 ) {
224 /* skip over "ldap://" prefix and return success */
225 p += LDAP_URL_PREFIX_LEN;
230 /* check for "ldaps://" prefix */
231 if ( strncasecmp( p, LDAPS_URL_PREFIX, LDAPS_URL_PREFIX_LEN ) == 0 ) {
232 /* skip over "ldaps://" prefix and return success */
233 p += LDAPS_URL_PREFIX_LEN;
238 /* check for "ldapi://" prefix */
239 if ( strncasecmp( p, LDAPI_URL_PREFIX, LDAPI_URL_PREFIX_LEN ) == 0 ) {
240 /* skip over "ldapi://" prefix and return success */
241 p += LDAPI_URL_PREFIX_LEN;
246 #ifdef LDAP_CONNECTIONLESS
247 /* check for "cldap://" prefix */
248 if ( strncasecmp( p, LDAPC_URL_PREFIX, LDAPC_URL_PREFIX_LEN ) == 0 ) {
249 /* skip over "cldap://" prefix and return success */
250 p += LDAPC_URL_PREFIX_LEN;
260 static int str2scope( const char *p )
262 if ( strcasecmp( p, "one" ) == 0 ) {
263 return LDAP_SCOPE_ONELEVEL;
265 } else if ( strcasecmp( p, "onelevel" ) == 0 ) {
266 return LDAP_SCOPE_ONELEVEL;
268 } else if ( strcasecmp( p, "base" ) == 0 ) {
269 return LDAP_SCOPE_BASE;
271 } else if ( strcasecmp( p, "sub" ) == 0 ) {
272 return LDAP_SCOPE_SUBTREE;
274 } else if ( strcasecmp( p, "subtree" ) == 0 ) {
275 return LDAP_SCOPE_SUBTREE;
277 #ifdef LDAP_SCOPE_SUBORDINATE
278 } else if ( strcasecmp( p, "subordinate" ) == 0 ) {
279 return LDAP_SCOPE_SUBORDINATE;
281 } else if ( strcasecmp( p, "children" ) == 0 ) {
282 return LDAP_SCOPE_SUBORDINATE;
289 static int hex_escape( char *buf, const char *s, int list )
293 static const char hex[] = "0123456789ABCDEF";
295 if( s == NULL ) return 0;
297 for( pos=0,i=0; s[i]; i++ ) {
323 escape = s[i] < 0x20 || 0x1f >= s[i];
328 buf[pos++] = hex[ (s[i] >> 4) & 0x0f ];
329 buf[pos++] = hex[ s[i] & 0x0f ];
339 static int hex_escape_args( char *buf, char **s )
344 if( s == NULL ) return 0;
347 for( i=0; s[i] != NULL; i++ ) {
351 pos += hex_escape( &buf[pos], s[i], 1 );
357 char * ldap_url_desc2str( LDAPURLDesc *u )
364 if( u == NULL ) return NULL;
367 for( i=0; u->lud_exts[i]; i++ ) {
368 len += strlen( u->lud_exts[i] ) + 1;
373 if( u->lud_filter ) {
374 len += strlen( u->lud_filter );
377 if ( len ) len++; /* ? */
379 switch( u->lud_scope ) {
380 case LDAP_SCOPE_BASE:
381 case LDAP_SCOPE_ONELEVEL:
382 case LDAP_SCOPE_SUBTREE:
383 #ifdef LDAP_FEATURE_SUBORDINATE_SCOPE
384 case LDAP_SCOPE_SUBORDINATE:
386 len += sizeof("subordinate");
391 if ( len ) len++; /* ? */
395 for( i=0; u->lud_attrs[i]; i++ ) {
396 len += strlen( u->lud_attrs[i] ) + 1;
399 } else if ( len ) len++; /* ? */
402 len += strlen( u->lud_dn ) + 1;
407 len += sizeof(":65535") - 1;
411 len+=strlen( u->lud_host );
414 len += strlen( u->lud_scheme ) + sizeof("://");
416 /* allocate enough to hex escape everything -- overkill */
417 s = LDAP_MALLOC( 3*len );
419 if( s == NULL ) return NULL;
422 sprintf( s, "%s://%s:%d%n", u->lud_scheme,
423 u->lud_host, u->lud_port, &sofar );
425 sprintf( s, "%s://%s%n", u->lud_scheme,
426 u->lud_host, &sofar );
429 if( sep < 1 ) goto done;
432 sofar += hex_escape( &s[sofar], u->lud_dn, 0 );
434 if( sep < 2 ) goto done;
437 sofar += hex_escape_args( &s[sofar], u->lud_attrs );
439 if( sep < 3 ) goto done;
442 switch( u->lud_scope ) {
443 case LDAP_SCOPE_BASE:
444 strcpy( &s[sofar], "base" );
445 sofar += sizeof("base") - 1;
447 case LDAP_SCOPE_ONELEVEL:
448 strcpy( &s[sofar], "one" );
449 sofar += sizeof("one") - 1;
451 case LDAP_SCOPE_SUBTREE:
452 strcpy( &s[sofar], "sub" );
453 sofar += sizeof("sub") - 1;
455 #ifdef LDAP_FEATURE_SUBORDINATE_SCOPE
456 case LDAP_SCOPE_SUBORDINATE:
457 strcpy( &s[sofar], "children" );
458 sofar += sizeof("children") - 1;
463 if( sep < 4 ) goto done;
466 sofar += hex_escape( &s[sofar], u->lud_filter, 0 );
468 if( sep < 5 ) goto done;
471 sofar += hex_escape_args( &s[sofar], u->lud_exts );
479 ldap_url_parse_ext( LDAP_CONST char *url_in, LDAPURLDesc **ludpp )
482 * Pick apart the pieces of an LDAP URL.
488 const char *scheme = NULL;
492 if( url_in == NULL || ludpp == NULL ) {
493 return LDAP_URL_ERR_PARAM;
496 #ifndef LDAP_INT_IN_KERNEL
497 /* Global options may not be created yet
498 * We can't test if the global options are initialized
499 * because a call to LDAP_INT_GLOBAL_OPT() will try to allocate
500 * the options and cause infinite recursion
502 Debug( LDAP_DEBUG_TRACE, "ldap_url_parse_ext(%s)\n", url_in, 0, 0 );
505 *ludpp = NULL; /* pessimistic */
507 url_tmp = skip_url_prefix( url_in, &enclosed, &scheme );
509 if ( url_tmp == NULL ) {
510 return LDAP_URL_ERR_BADSCHEME;
515 /* make working copy of the remainder of the URL */
516 url = LDAP_STRDUP( url_tmp );
518 return LDAP_URL_ERR_MEM;
522 p = &url[strlen(url)-1];
526 return LDAP_URL_ERR_BADENCLOSURE;
532 /* allocate return struct */
533 ludp = (LDAPURLDesc *)LDAP_CALLOC( 1, sizeof( LDAPURLDesc ));
535 if ( ludp == NULL ) {
537 return LDAP_URL_ERR_MEM;
540 ludp->lud_next = NULL;
541 ludp->lud_host = NULL;
544 ludp->lud_attrs = NULL;
545 ludp->lud_scope = LDAP_SCOPE_DEFAULT;
546 ludp->lud_filter = NULL;
547 ludp->lud_exts = NULL;
549 ludp->lud_scheme = LDAP_STRDUP( scheme );
551 if ( ludp->lud_scheme == NULL ) {
553 ldap_free_urldesc( ludp );
554 return LDAP_URL_ERR_MEM;
557 /* scan forward for '/' that marks end of hostport and begin. of dn */
558 p = strchr( url, '/' );
561 /* terminate hostport; point to start of dn */
565 /* IPv6 syntax with [ip address]:port */
567 r = strchr( url, ']' );
570 ldap_free_urldesc( ludp );
571 return LDAP_URL_ERR_BADURL;
574 q = strchr( r, ':' );
576 q = strchr( url, ':' );
583 ldap_pvt_hex_unescape( q );
587 ldap_free_urldesc( ludp );
588 return LDAP_URL_ERR_BADURL;
591 ludp->lud_port = strtol( q, &next, 10 );
592 if ( next == NULL || next[0] != '\0' ) {
594 ldap_free_urldesc( ludp );
595 return LDAP_URL_ERR_BADURL;
599 ldap_pvt_hex_unescape( url );
601 /* If [ip address]:port syntax, url is [ip and we skip the [ */
602 ludp->lud_host = LDAP_STRDUP( url + ( *url == '[' ) );
604 if( ludp->lud_host == NULL ) {
606 ldap_free_urldesc( ludp );
607 return LDAP_URL_ERR_MEM;
611 * Kludge. ldap://111.222.333.444:389??cn=abc,o=company
613 * On early Novell releases, search references/referrals were returned
614 * in this format, i.e., the dn was kind of in the scope position,
615 * but the required slash is missing. The whole thing is illegal syntax,
616 * but we need to account for it. Fortunately it can't be confused with
619 if( (p == NULL) && (q != NULL) && ((q = strchr( q, '?')) != NULL)) {
621 /* ? immediately followed by question */
626 ldap_pvt_hex_unescape( q );
627 ludp->lud_dn = LDAP_STRDUP( q );
629 ludp->lud_dn = LDAP_STRDUP( "" );
632 if( ludp->lud_dn == NULL ) {
634 ldap_free_urldesc( ludp );
635 return LDAP_URL_ERR_MEM;
643 return LDAP_URL_SUCCESS;
646 /* scan forward for '?' that may marks end of dn */
647 q = strchr( p, '?' );
650 /* terminate dn part */
656 ldap_pvt_hex_unescape( p );
657 ludp->lud_dn = LDAP_STRDUP( p );
659 ludp->lud_dn = LDAP_STRDUP( "" );
662 if( ludp->lud_dn == NULL ) {
664 ldap_free_urldesc( ludp );
665 return LDAP_URL_ERR_MEM;
672 return LDAP_URL_SUCCESS;
675 /* scan forward for '?' that may marks end of attributes */
677 q = strchr( p, '?' );
680 /* terminate attributes part */
685 /* parse attributes */
686 ldap_pvt_hex_unescape( p );
687 ludp->lud_attrs = ldap_str2charray( p, "," );
689 if( ludp->lud_attrs == NULL ) {
691 ldap_free_urldesc( ludp );
692 return LDAP_URL_ERR_BADATTRS;
700 return LDAP_URL_SUCCESS;
703 /* scan forward for '?' that may marks end of scope */
705 q = strchr( p, '?' );
708 /* terminate the scope part */
713 /* parse the scope */
714 ldap_pvt_hex_unescape( p );
715 ludp->lud_scope = str2scope( p );
717 if( ludp->lud_scope == -1 ) {
719 ldap_free_urldesc( ludp );
720 return LDAP_URL_ERR_BADSCOPE;
728 return LDAP_URL_SUCCESS;
731 /* scan forward for '?' that may marks end of filter */
733 q = strchr( p, '?' );
736 /* terminate the filter part */
741 /* parse the filter */
742 ldap_pvt_hex_unescape( p );
747 ldap_free_urldesc( ludp );
748 return LDAP_URL_ERR_BADFILTER;
751 ludp->lud_filter = LDAP_STRDUP( p );
753 if( ludp->lud_filter == NULL ) {
755 ldap_free_urldesc( ludp );
756 return LDAP_URL_ERR_MEM;
764 return LDAP_URL_SUCCESS;
767 /* scan forward for '?' that may marks end of extensions */
769 q = strchr( p, '?' );
774 ldap_free_urldesc( ludp );
775 return LDAP_URL_ERR_BADURL;
778 /* parse the extensions */
779 ludp->lud_exts = ldap_str2charray( p, "," );
781 if( ludp->lud_exts == NULL ) {
783 ldap_free_urldesc( ludp );
784 return LDAP_URL_ERR_BADEXTS;
787 for( i=0; ludp->lud_exts[i] != NULL; i++ ) {
788 ldap_pvt_hex_unescape( ludp->lud_exts[i] );
790 if( *ludp->lud_exts[i] == '!' ) {
791 /* count the number of critical extensions */
792 ludp->lud_crit_exts++;
797 /* must have 1 or more */
799 ldap_free_urldesc( ludp );
800 return LDAP_URL_ERR_BADEXTS;
806 return LDAP_URL_SUCCESS;
810 ldap_url_parse( LDAP_CONST char *url_in, LDAPURLDesc **ludpp )
812 int rc = ldap_url_parse_ext( url_in, ludpp );
814 if( rc != LDAP_URL_SUCCESS ) {
818 if ((*ludpp)->lud_scope == LDAP_SCOPE_DEFAULT) {
819 (*ludpp)->lud_scope = LDAP_SCOPE_BASE;
822 if ((*ludpp)->lud_host != NULL && *(*ludpp)->lud_host == '\0') {
823 LDAP_FREE( (*ludpp)->lud_host );
824 (*ludpp)->lud_host = NULL;
827 if ((*ludpp)->lud_port == 0) {
828 if( strcmp((*ludpp)->lud_scheme, "ldap") == 0 ) {
829 (*ludpp)->lud_port = LDAP_PORT;
830 #ifdef LDAP_CONNECTIONLESS
831 } else if( strcmp((*ludpp)->lud_scheme, "cldap") == 0 ) {
832 (*ludpp)->lud_port = LDAP_PORT;
834 } else if( strcmp((*ludpp)->lud_scheme, "ldaps") == 0 ) {
835 (*ludpp)->lud_port = LDAPS_PORT;
843 ldap_url_dup ( LDAPURLDesc *ludp )
847 if ( ludp == NULL ) {
851 dest = LDAP_MALLOC( sizeof(LDAPURLDesc) );
856 dest->lud_scheme = NULL;
857 dest->lud_host = NULL;
859 dest->lud_filter = NULL;
860 dest->lud_attrs = NULL;
861 dest->lud_exts = NULL;
862 dest->lud_next = NULL;
864 if ( ludp->lud_scheme != NULL ) {
865 dest->lud_scheme = LDAP_STRDUP( ludp->lud_scheme );
866 if (dest->lud_scheme == NULL) {
867 ldap_free_urldesc(dest);
872 if ( ludp->lud_host != NULL ) {
873 dest->lud_host = LDAP_STRDUP( ludp->lud_host );
874 if (dest->lud_host == NULL) {
875 ldap_free_urldesc(dest);
880 if ( ludp->lud_dn != NULL ) {
881 dest->lud_dn = LDAP_STRDUP( ludp->lud_dn );
882 if (dest->lud_dn == NULL) {
883 ldap_free_urldesc(dest);
888 if ( ludp->lud_filter != NULL ) {
889 dest->lud_filter = LDAP_STRDUP( ludp->lud_filter );
890 if (dest->lud_filter == NULL) {
891 ldap_free_urldesc(dest);
896 if ( ludp->lud_attrs != NULL ) {
897 dest->lud_attrs = ldap_charray_dup( ludp->lud_attrs );
898 if (dest->lud_attrs == NULL) {
899 ldap_free_urldesc(dest);
904 if ( ludp->lud_exts != NULL ) {
905 dest->lud_exts = ldap_charray_dup( ludp->lud_exts );
906 if (dest->lud_exts == NULL) {
907 ldap_free_urldesc(dest);
916 ldap_url_duplist (LDAPURLDesc *ludlist)
918 LDAPURLDesc *dest, *tail, *ludp, *newludp;
922 for (ludp = ludlist; ludp != NULL; ludp = ludp->lud_next) {
923 newludp = ldap_url_dup(ludp);
924 if (newludp == NULL) {
925 ldap_free_urllist(dest);
931 tail->lud_next = newludp;
938 ldap_url_parselist (LDAPURLDesc **ludlist, const char *url )
940 return ldap_url_parselist_ext( ludlist, url, ", " );
944 ldap_url_parselist_ext (LDAPURLDesc **ludlist, const char *url, const char *sep )
950 assert( ludlist != NULL );
951 assert( url != NULL );
955 urls = ldap_str2charray(url, sep);
957 return LDAP_URL_ERR_MEM;
959 /* count the URLs... */
960 for (i = 0; urls[i] != NULL; i++) ;
961 /* ...and put them in the "stack" backward */
963 rc = ldap_url_parse( urls[i], &ludp );
965 ldap_charray_free(urls);
966 ldap_free_urllist(*ludlist);
970 ludp->lud_next = *ludlist;
973 ldap_charray_free(urls);
974 return LDAP_URL_SUCCESS;
979 LDAPURLDesc **ludlist,
987 assert( ludlist != NULL );
988 assert( hosts != NULL );
992 specs = ldap_str2charray(hosts, ", ");
994 return LDAP_NO_MEMORY;
996 /* count the URLs... */
997 for (i = 0; specs[i] != NULL; i++) /* EMPTY */;
999 /* ...and put them in the "stack" backward */
1001 ludp = LDAP_CALLOC( 1, sizeof(LDAPURLDesc) );
1003 ldap_charray_free(specs);
1004 ldap_free_urllist(*ludlist);
1006 return LDAP_NO_MEMORY;
1008 ludp->lud_port = port;
1009 ludp->lud_host = specs[i];
1011 p = strchr(ludp->lud_host, ':');
1013 /* more than one :, IPv6 address */
1014 if ( strchr(p+1, ':') != NULL ) {
1015 /* allow [address] and [address]:port */
1016 if ( *ludp->lud_host == '[' ) {
1017 p = LDAP_STRDUP(ludp->lud_host+1);
1018 /* copied, make sure we free source later */
1019 specs[i] = ludp->lud_host;
1021 p = strchr( ludp->lud_host, ']' );
1023 return LDAP_PARAM_ERROR;
1027 return LDAP_PARAM_ERROR;
1038 ldap_pvt_hex_unescape(p);
1039 ludp->lud_port = strtol( p, &next, 10 );
1040 if ( next == NULL || next[0] != '\0' ) {
1041 return LDAP_PARAM_ERROR;
1045 ldap_pvt_hex_unescape(ludp->lud_host);
1046 ludp->lud_scheme = LDAP_STRDUP("ldap");
1047 ludp->lud_next = *ludlist;
1051 /* this should be an array of NULLs now */
1052 /* except entries starting with [ */
1053 ldap_charray_free(specs);
1054 return LDAP_SUCCESS;
1058 ldap_url_list2hosts (LDAPURLDesc *ludlist)
1062 char *s, *p, buf[32]; /* big enough to hold a long decimal # (overkill) */
1064 if (ludlist == NULL)
1067 /* figure out how big the string is */
1068 size = 1; /* nul-term */
1069 for (ludp = ludlist; ludp != NULL; ludp = ludp->lud_next) {
1070 size += strlen(ludp->lud_host) + 1; /* host and space */
1071 if (strchr(ludp->lud_host, ':')) /* will add [ ] below */
1073 if (ludp->lud_port != 0)
1074 size += sprintf(buf, ":%d", ludp->lud_port);
1076 s = LDAP_MALLOC(size);
1081 for (ludp = ludlist; ludp != NULL; ludp = ludp->lud_next) {
1082 if (strchr(ludp->lud_host, ':')) {
1083 p += sprintf(p, "[%s]", ludp->lud_host);
1085 strcpy(p, ludp->lud_host);
1086 p += strlen(ludp->lud_host);
1088 if (ludp->lud_port != 0)
1089 p += sprintf(p, ":%d", ludp->lud_port);
1093 p--; /* nuke that extra space */
1100 LDAPURLDesc *ludlist )
1104 char *s, *p, buf[32]; /* big enough to hold a long decimal # (overkill) */
1106 if (ludlist == NULL)
1109 /* figure out how big the string is */
1110 size = 1; /* nul-term */
1111 for (ludp = ludlist; ludp != NULL; ludp = ludp->lud_next) {
1112 size += strlen(ludp->lud_scheme);
1113 if ( ludp->lud_host ) {
1114 size += strlen(ludp->lud_host);
1115 /* will add [ ] below */
1116 if (strchr(ludp->lud_host, ':'))
1119 size += sizeof(":/// ");
1121 if (ludp->lud_port != 0) {
1122 size += sprintf(buf, ":%d", ludp->lud_port);
1126 s = LDAP_MALLOC(size);
1132 for (ludp = ludlist; ludp != NULL; ludp = ludp->lud_next) {
1133 p += sprintf(p, "%s://", ludp->lud_scheme);
1134 if ( ludp->lud_host ) {
1135 p += sprintf(p, strchr(ludp->lud_host, ':')
1136 ? "[%s]" : "%s", ludp->lud_host);
1138 if (ludp->lud_port != 0)
1139 p += sprintf(p, ":%d", ludp->lud_port);
1144 p--; /* nuke that extra space */
1150 ldap_free_urllist( LDAPURLDesc *ludlist )
1152 LDAPURLDesc *ludp, *next;
1154 for (ludp = ludlist; ludp != NULL; ludp = next) {
1155 next = ludp->lud_next;
1156 ldap_free_urldesc(ludp);
1161 ldap_free_urldesc( LDAPURLDesc *ludp )
1163 if ( ludp == NULL ) {
1167 if ( ludp->lud_scheme != NULL ) {
1168 LDAP_FREE( ludp->lud_scheme );
1171 if ( ludp->lud_host != NULL ) {
1172 LDAP_FREE( ludp->lud_host );
1175 if ( ludp->lud_dn != NULL ) {
1176 LDAP_FREE( ludp->lud_dn );
1179 if ( ludp->lud_filter != NULL ) {
1180 LDAP_FREE( ludp->lud_filter);
1183 if ( ludp->lud_attrs != NULL ) {
1184 LDAP_VFREE( ludp->lud_attrs );
1187 if ( ludp->lud_exts != NULL ) {
1188 LDAP_VFREE( ludp->lud_exts );
1195 ldap_int_unhex( int c )
1197 return( c >= '0' && c <= '9' ? c - '0'
1198 : c >= 'A' && c <= 'F' ? c - 'A' + 10
1203 ldap_pvt_hex_unescape( char *s )
1206 * Remove URL hex escapes from s... done in place. The basic concept for
1207 * this routine is borrowed from the WWW library HTUnEscape() routine.
1211 for ( p = s; *s != '\0'; ++s ) {
1213 if ( *++s == '\0' ) {
1216 *p = ldap_int_unhex( *s ) << 4;
1217 if ( *++s == '\0' ) {
1220 *p++ += ldap_int_unhex( *s );