xref: /illumos-gate/usr/src/lib/libldap5/sources/ldap/ber/decode.c (revision 1da57d551424de5a9d469760be7c4b4d4f10a755)
1 /*
2  * Copyright 2001-2002 Sun Microsystems, Inc.  All rights reserved.
3  * Use is subject to license terms.
4  */
5 
6 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
7  *
8  * The contents of this file are subject to the Netscape Public License
9  * Version 1.0 (the "NPL"); you may not use this file except in
10  * compliance with the NPL.  You may obtain a copy of the NPL at
11  * http://www.mozilla.org/NPL/
12  *
13  * Software distributed under the NPL is distributed on an "AS IS" basis,
14  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
15  * for the specific language governing rights and limitations under the
16  * NPL.
17  *
18  * The Initial Developer of this code under the NPL is Netscape
19  * Communications Corporation.  Portions created by Netscape are
20  * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
21  * Reserved.
22  */
23 
24 /*
25  * Copyright (c) 1990 Regents of the University of Michigan.
26  * All rights reserved.
27  *
28  * Redistribution and use in source and binary forms are permitted
29  * provided that this notice is preserved and that due credit is given
30  * to the University of Michigan at Ann Arbor. The name of the University
31  * may not be used to endorse or promote products derived from this
32  * software without specific prior written permission. This software
33  * is provided ``as is'' without express or implied warranty.
34  */
35 
36 /* decode.c - ber input decoding routines */
37 
38 #include "lber-int.h"
39 LDAP_API(void) LDAP_CALL ber_svecfree( char **vals );
40 
41 /*
42  * Note: ber_get_tag() only uses the ber_end and ber_ptr elements of ber.
43  * If that changes, the ber_peek_tag() and/or ber_skip_tag() implementations
44  * will need to be changed.
45  */
46 /* return the tag - LBER_DEFAULT returned means trouble */
47 ber_tag_t
48 LDAP_CALL
ber_get_tag(BerElement * ber)49 ber_get_tag( BerElement *ber )
50 {
51 	unsigned char	xbyte;
52 	ber_tag_t	tag;
53 	char		*tagp;
54 	int		i;
55 
56 	if ( ber_read( ber, (char *) &xbyte, 1 ) != 1 )
57 		return( LBER_DEFAULT );
58 
59 	if ( (xbyte & LBER_BIG_TAG_MASK) != LBER_BIG_TAG_MASK )
60 		return( (ber_uint_t) xbyte );
61 
62 	tagp = (char *) &tag;
63 	tagp[0] = xbyte;
64 	for ( i = 1; i < sizeof(ber_int_t); i++ ) {
65 		if ( ber_read( ber, (char *) &xbyte, 1 ) != 1 )
66 			return( LBER_DEFAULT );
67 
68 		tagp[i] = xbyte;
69 
70 		if ( ! (xbyte & LBER_MORE_TAG_MASK) )
71 			break;
72 	}
73 
74 	/* tag too big! */
75 	if ( i == sizeof(ber_int_t) )
76 		return( LBER_DEFAULT );
77 
78 	/* want leading, not trailing 0's */
79 	return( tag >> (sizeof(ber_int_t) - i - 1) );
80 }
81 
82 /*
83  * Note: ber_skip_tag() only uses the ber_end and ber_ptr elements of ber.
84  * If that changes, the implementation of ber_peek_tag() will need to
85  * be changed.
86  */
87 ber_tag_t
88 LDAP_CALL
ber_skip_tag(BerElement * ber,ber_len_t * len)89 ber_skip_tag( BerElement *ber, ber_len_t *len )
90 {
91 	ber_tag_t	tag;
92 	unsigned char	lc;
93 	int		noctets, diff;
94 	ber_len_t	netlen;
95 
96 	/*
97 	 * Any ber element looks like this: tag length contents.
98 	 * Assuming everything's ok, we return the tag byte (we
99 	 * can assume a single byte), and return the length in len.
100 	 *
101 	 * Assumptions:
102 	 *	1) definite lengths
103 	 *	2) primitive encodings used whenever possible
104 	 */
105 
106 	/*
107 	 * First, we read the tag.
108 	 */
109 
110 	if ( (tag = ber_get_tag( ber )) == LBER_DEFAULT )
111 		return( LBER_DEFAULT );
112 
113 	/*
114 	 * Next, read the length.  The first byte contains the length of
115 	 * the length.  If bit 8 is set, the length is the long form,
116 	 * otherwise it's the short form.  We don't allow a length that's
117 	 * greater than what we can hold in an unsigned long.
118 	 */
119 
120 	*len = netlen = 0;
121 	if ( ber_read( ber, (char *) &lc, 1 ) != 1 )
122 		return( LBER_DEFAULT );
123 	if ( lc & 0x80 ) {
124 		noctets = (lc & 0x7f);
125 		if ( noctets > sizeof(ber_uint_t) )
126 			return( LBER_DEFAULT );
127 		diff = sizeof(ber_int_t) - noctets;
128 		if ( ber_read( ber, (char *) &netlen + diff, noctets )
129 		    != noctets )
130 			return( LBER_DEFAULT );
131 		*len = LBER_NTOHL( netlen );
132 	} else {
133 		*len = lc;
134 	}
135 
136 	return( tag );
137 }
138 
139 
140 /*
141  * Note: Previously, we passed the "ber" parameter directly to ber_skip_tag(),
142  * saving and restoring the ber_ptr element only.  We now take advantage
143  * of the fact that the only ber structure elements touched by ber_skip_tag()
144  * are ber_end and ber_ptr.  If that changes, this code must change too.
145  */
146 ber_tag_t
147 LDAP_CALL
ber_peek_tag(BerElement * ber,ber_len_t * len)148 ber_peek_tag( BerElement *ber, ber_len_t *len )
149 {
150 	BerElement	bercopy;
151 
152 	bercopy.ber_end = ber->ber_end;
153 	bercopy.ber_ptr = ber->ber_ptr;
154 	return( ber_skip_tag( &bercopy, len ));
155 }
156 
157 static int
ber_getnint(BerElement * ber,ber_int_t * num,ber_slen_t len)158 ber_getnint( BerElement *ber, ber_int_t *num, ber_slen_t len )
159 {
160 	int i;
161 	ber_int_t value;
162 	unsigned char buffer[sizeof(ber_int_t)];
163 	/*
164 	 * The tag and length have already been stripped off.  We should
165 	 * be sitting right before len bytes of 2's complement integer,
166 	 * ready to be read straight into an int.  We may have to sign
167 	 * extend after we read it in.
168 	 */
169 
170 	if ( len > sizeof(ber_slen_t) )
171 		return( -1 );
172 
173 	/* read into the low-order bytes of netnum */
174 	if ( ber_read( ber, (char *) buffer, len ) != len )
175 		return( -1 );
176 
177 	/* This sets the required sign extension */
178 	if ( len != 0) {
179 		value = 0x80 & buffer[0] ? (LBER_FUNC_VALUE) : 0;
180 	} else {
181 		value = 0;
182 	}
183 
184 	for ( i = 0; i < len; i++ )
185 	  value = (value << 8) | buffer[i];
186 
187 	*num = value;
188 
189 	return( len );
190 }
191 
192 ber_tag_t
193 LDAP_CALL
ber_get_int(BerElement * ber,ber_int_t * num)194 ber_get_int( BerElement *ber, ber_int_t *num )
195 {
196 	ber_tag_t	tag;
197 	ber_len_t	len;
198 
199 	if ( (tag = ber_skip_tag( ber, &len )) == LBER_DEFAULT )
200 		return( LBER_DEFAULT );
201 
202 	/*
203      * len is being demoted to a long here --  possible conversion error
204      */
205 
206 	if ( ber_getnint( ber, num, (int)len ) != (ber_slen_t)len )
207 		return( LBER_DEFAULT );
208 	else
209 		return( tag );
210 }
211 
212 ber_tag_t
213 LDAP_CALL
ber_get_stringb(BerElement * ber,char * buf,ber_len_t * len)214 ber_get_stringb( BerElement *ber, char *buf, ber_len_t *len )
215 {
216 	ber_len_t	datalen;
217 	ber_tag_t	tag;
218 #ifdef STR_TRANSLATION
219 	char		*transbuf;
220 #endif /* STR_TRANSLATION */
221 
222 	if ( (tag = ber_skip_tag( ber, &datalen )) == LBER_DEFAULT )
223 		return( LBER_DEFAULT );
224 	if ( datalen > (*len - 1) )
225 		return( LBER_DEFAULT );
226 
227 	/*
228      * datalen is being demoted to a long here --  possible conversion error
229      */
230 
231 	if ( ber_read( ber, buf, datalen ) != (ber_slen_t) datalen )
232 		return( LBER_DEFAULT );
233 
234 	buf[datalen] = '\0';
235 
236 #ifdef STR_TRANSLATION
237 	if ( datalen > 0 && ( ber->ber_options & LBER_OPT_TRANSLATE_STRINGS )
238 	    != 0 && ber->ber_decode_translate_proc != NULL ) {
239 		transbuf = buf;
240 		++datalen;
241 		if ( (*(ber->ber_decode_translate_proc))( &transbuf, &datalen,
242 		    0 ) != 0 ) {
243 			return( LBER_DEFAULT );
244 		}
245 		if ( datalen > *len ) {
246 			NSLBERI_FREE( transbuf );
247 			return( LBER_DEFAULT );
248 		}
249 		SAFEMEMCPY( buf, transbuf, datalen );
250 		NSLBERI_FREE( transbuf );
251 		--datalen;
252 	}
253 #endif /* STR_TRANSLATION */
254 
255 	*len = datalen;
256 	return( tag );
257 }
258 
259 ber_tag_t
260 LDAP_CALL
ber_get_stringa(BerElement * ber,char ** buf)261 ber_get_stringa( BerElement *ber, char **buf )
262 {
263 	ber_len_t	datalen;
264 	ber_tag_t	tag;
265 
266 	if ( (tag = ber_skip_tag( ber, &datalen )) == LBER_DEFAULT )
267 		return( LBER_DEFAULT );
268 
269 	if ( (*buf = (char *)NSLBERI_MALLOC( (size_t)datalen + 1 )) == NULL )
270 		return( LBER_DEFAULT );
271 
272 	/*
273      * datalen is being demoted to a long here --  possible conversion error
274      */
275 	if ( ber_read( ber, *buf, datalen ) != (ber_slen_t) datalen )
276 		return( LBER_DEFAULT );
277 	(*buf)[datalen] = '\0';
278 
279 #ifdef STR_TRANSLATION
280 	if ( datalen > 0 && ( ber->ber_options & LBER_OPT_TRANSLATE_STRINGS )
281 	    != 0 && ber->ber_decode_translate_proc != NULL ) {
282 		++datalen;
283 		if ( (*(ber->ber_decode_translate_proc))( buf, &datalen, 1 )
284 		    != 0 ) {
285 			NSLBERI_FREE( *buf );
286 			return( LBER_DEFAULT );
287 		}
288 	}
289 #endif /* STR_TRANSLATION */
290 
291 	return( tag );
292 }
293 
294 ber_tag_t
295 LDAP_CALL
ber_get_stringal(BerElement * ber,struct berval ** bv)296 ber_get_stringal( BerElement *ber, struct berval **bv )
297 {
298 	ber_len_t	len;
299 	ber_tag_t	tag;
300 
301 	if ( (*bv = (struct berval *)NSLBERI_MALLOC( sizeof(struct berval) ))
302 	    == NULL ) {
303 		return( LBER_DEFAULT );
304 	}
305 
306 	if ( (tag = ber_skip_tag( ber, &len )) == LBER_DEFAULT ) {
307 		return( LBER_DEFAULT );
308 	}
309 
310 	if ( ((*bv)->bv_val = (char *)NSLBERI_MALLOC( (size_t)len + 1 ))
311 	    == NULL ) {
312 		return( LBER_DEFAULT );
313 	}
314 
315 	/*
316      * len is being demoted to a long here --  possible conversion error
317      */
318 	if ( ber_read( ber, (*bv)->bv_val, len ) != (ber_slen_t) len )
319 		return( LBER_DEFAULT );
320 	((*bv)->bv_val)[len] = '\0';
321 	(*bv)->bv_len = len;
322 
323 #ifdef STR_TRANSLATION
324 	if ( len > 0 && ( ber->ber_options & LBER_OPT_TRANSLATE_STRINGS ) != 0
325 	    && ber->ber_decode_translate_proc != NULL ) {
326 		++len;
327 		if ( (*(ber->ber_decode_translate_proc))( &((*bv)->bv_val),
328 		    &len, 1 ) != 0 ) {
329 			NSLBERI_FREE( (*bv)->bv_val );
330 			return( LBER_DEFAULT );
331 		}
332 		(*bv)->bv_len = len - 1;
333 	}
334 #endif /* STR_TRANSLATION */
335 
336 	return( tag );
337 }
338 
339 ber_tag_t
340 LDAP_CALL
ber_get_bitstringa(BerElement * ber,char ** buf,ber_len_t * blen)341 ber_get_bitstringa( BerElement *ber, char **buf, ber_len_t *blen )
342 {
343 	ber_len_t	datalen;
344 	ber_tag_t	tag;
345 	unsigned char	unusedbits;
346 
347 	if ( (tag = ber_skip_tag( ber, &datalen )) == LBER_DEFAULT )
348 		return( LBER_DEFAULT );
349 	--datalen;
350 
351 	if ( (*buf = (char *)NSLBERI_MALLOC( (size_t)datalen )) == NULL )
352 		return( LBER_DEFAULT );
353 
354 	if ( ber_read( ber, (char *)&unusedbits, 1 ) != 1 )
355 		return( LBER_DEFAULT );
356 
357 	/*
358      * datalen is being demoted to a long here --  possible conversion error
359      */
360 	if ( ber_read( ber, *buf, datalen ) != (ber_slen_t) datalen )
361 		return( LBER_DEFAULT );
362 
363 	*blen = datalen * 8 - unusedbits;
364 	return( tag );
365 }
366 
367 ber_tag_t
368 LDAP_CALL
ber_get_null(BerElement * ber)369 ber_get_null( BerElement *ber )
370 {
371 	ber_len_t	len;
372 	ber_tag_t tag;
373 
374 	if ( (tag = ber_skip_tag( ber, &len )) == LBER_DEFAULT )
375 		return( LBER_DEFAULT );
376 
377 	if ( len != 0 )
378 		return( LBER_DEFAULT );
379 
380 	return( tag );
381 }
382 
383 ber_tag_t
384 LDAP_CALL
ber_get_boolean(BerElement * ber,int * boolval)385 ber_get_boolean( BerElement *ber, int *boolval )
386 {
387 	ber_int_t	longbool;
388 	int		rc;
389 
390 	rc = ber_get_int( ber, &longbool );
391 	*boolval = longbool;
392 
393 	return( rc );
394 }
395 
396 ber_tag_t
397 LDAP_CALL
ber_first_element(BerElement * ber,ber_len_t * len,char ** last)398 ber_first_element( BerElement *ber, ber_len_t *len, char **last )
399 {
400 	/* skip the sequence header, use the len to mark where to stop */
401 	if ( ber_skip_tag( ber, len ) == LBER_DEFAULT ) {
402 		return( LBER_ERROR );
403 	}
404 
405 	*last = ber->ber_ptr + *len;
406 
407 	if ( *last == ber->ber_ptr ) {
408 		return( LBER_END_OF_SEQORSET );
409 	}
410 
411 	return( ber_peek_tag( ber, len ) );
412 }
413 
414 ber_tag_t
415 LDAP_CALL
ber_next_element(BerElement * ber,ber_len_t * len,char * last)416 ber_next_element( BerElement *ber, ber_len_t *len, char *last )
417 {
418 	if ( ber->ber_ptr == last ) {
419 		return( LBER_END_OF_SEQORSET );
420 	}
421 
422 	return( ber_peek_tag( ber, len ) );
423 }
424 
425 /* VARARGS */
426 ber_tag_t
427 LDAP_C
ber_scanf(BerElement * ber,const char * fmt,...)428 ber_scanf( BerElement *ber, const char *fmt, ... )
429 {
430 	va_list		ap;
431 	char		*last, *p;
432 	char		*s, **ss, ***sss;
433 	struct berval 	***bv, **bvp, *bval;
434 	int		*i, j;
435 	ber_int_t	*l, rc, tag;
436 	ber_tag_t	*t;
437 	ber_len_t	len;
438 	size_t		array_size;
439 
440 	va_start( ap, fmt );
441 
442 #ifdef LDAP_DEBUG
443 	if ( lber_debug & 64 ) {
444 		char msg[80];
445 		sprintf( msg, "ber_scanf fmt (%s) ber:\n", fmt );
446 		ber_err_print( msg );
447 		ber_dump( ber, 1 );
448 	}
449 #endif
450 
451 	for ( rc = 0, p = (char *)fmt; *p && rc != LBER_DEFAULT; p++ ) {
452 		switch ( *p ) {
453 		case 'a':	/* octet string - allocate storage as needed */
454 			ss = va_arg( ap, char ** );
455 			rc = ber_get_stringa( ber, ss );
456 			break;
457 
458 		case 'b':	/* boolean */
459 			i = va_arg( ap, int * );
460 			rc = ber_get_boolean( ber, i );
461 			break;
462 
463 		case 'e':	/* enumerated */
464 		case 'i':	/* int */
465 			l = va_arg( ap, ber_slen_t * );
466 			rc = ber_get_int( ber, l );
467 			break;
468 
469 		case 'l':	/* length of next item */
470 			l = va_arg( ap, ber_slen_t * );
471 			rc = ber_peek_tag( ber, (ber_len_t *)l );
472 			break;
473 
474 		case 'n':	/* null */
475 			rc = ber_get_null( ber );
476 			break;
477 
478 		case 's':	/* octet string - in a buffer */
479 			s = va_arg( ap, char * );
480 			l = va_arg( ap, ber_slen_t * );
481 			rc = ber_get_stringb( ber, s, (ber_len_t *)l );
482 			break;
483 
484 		case 'o':	/* octet string in a supplied berval */
485 			bval = va_arg( ap, struct berval * );
486 			ber_peek_tag( ber, &bval->bv_len );
487 			rc = ber_get_stringa( ber, &bval->bv_val );
488 			break;
489 
490 		case 'O':	/* octet string - allocate & include length */
491 			bvp = va_arg( ap, struct berval ** );
492 			rc = ber_get_stringal( ber, bvp );
493 			break;
494 
495 		case 'B':	/* bit string - allocate storage as needed */
496 			ss = va_arg( ap, char ** );
497 			l = va_arg( ap, ber_slen_t * ); /* for length, in bits */
498 			rc = ber_get_bitstringa( ber, ss, (ber_len_t *)l );
499 			break;
500 
501 		case 't':	/* tag of next item */
502 			t = va_arg( ap, ber_tag_t * );
503 			*t = rc = ber_peek_tag( ber, &len );
504 			break;
505 
506 		case 'T':	/* skip tag of next item */
507 			t = va_arg( ap, ber_tag_t * );
508 			*t = rc = ber_skip_tag( ber, &len );
509 			break;
510 
511 		case 'v':	/* sequence of strings */
512 			sss = va_arg( ap, char *** );
513 			*sss = NULL;
514 			j = 0;
515 			array_size = 0;
516 			for ( tag = ber_first_element( ber, &len, &last );
517 			    tag != LBER_DEFAULT && tag != LBER_END_OF_SEQORSET
518 			    && rc != LBER_DEFAULT;
519 			    tag = ber_next_element( ber, &len, last ) ) {
520 				if ( *sss == NULL ) {
521 				    /* Make room for at least 15 strings */
522 				    *sss = (char **)NSLBERI_MALLOC(16 * sizeof(char *) );
523 				    array_size = 16;
524 				} else {
525 				    if ( (size_t)(j+2) > array_size) {
526 					/* We'v overflowed our buffer */
527 					*sss = (char **)NSLBERI_REALLOC( *sss, (array_size * 2) * sizeof(char *) );
528 					array_size = array_size * 2;
529 				    }
530 				}
531 				rc = ber_get_stringa( ber, &((*sss)[j]) );
532 				j++;
533 			}
534 			if ( rc != LBER_DEFAULT &&
535 			    tag != LBER_END_OF_SEQORSET ) {
536 				rc = LBER_DEFAULT;
537 			}
538 			if ( j > 0 )
539 				(*sss)[j] = NULL;
540 			break;
541 
542 		case 'V':	/* sequence of strings + lengths */
543 			bv = va_arg( ap, struct berval *** );
544 			*bv = NULL;
545 			j = 0;
546 			for ( tag = ber_first_element( ber, &len, &last );
547 			    tag != LBER_DEFAULT && tag != LBER_END_OF_SEQORSET
548 			    && rc != LBER_DEFAULT;
549 			    tag = ber_next_element( ber, &len, last ) ) {
550 				if ( *bv == NULL ) {
551 					*bv = (struct berval **)NSLBERI_MALLOC(
552 					    2 * sizeof(struct berval *) );
553 				} else {
554 					*bv = (struct berval **)NSLBERI_REALLOC(
555 					    *bv,
556 					    (j + 2) * sizeof(struct berval *) );
557 				}
558 				rc = ber_get_stringal( ber, &((*bv)[j]) );
559 				j++;
560 			}
561 			if ( rc != LBER_DEFAULT &&
562 			    tag != LBER_END_OF_SEQORSET ) {
563 				rc = LBER_DEFAULT;
564 			}
565 			if ( j > 0 )
566 				(*bv)[j] = NULL;
567 			break;
568 
569 		case 'x':	/* skip the next element - whatever it is */
570 			if ( (rc = ber_skip_tag( ber, &len )) == LBER_DEFAULT )
571 				break;
572 			ber->ber_ptr += len;
573 			break;
574 
575 		case '{':	/* begin sequence */
576 		case '[':	/* begin set */
577 			if ( *(p + 1) != 'v' && *(p + 1) != 'V' )
578 				rc = ber_skip_tag( ber, &len );
579 			break;
580 
581 		case '}':	/* end sequence */
582 		case ']':	/* end set */
583 			break;
584 
585 		default:
586 			{
587 				char msg[80];
588 				sprintf( msg, "unknown fmt %c\n", *p );
589 				ber_err_print( msg );
590 			}
591 			rc = LBER_DEFAULT;
592 			break;
593 		}
594 	}
595 
596 
597 	va_end( ap );
598         if (rc == LBER_DEFAULT) {
599           va_start( ap, fmt );
600           for ( p--; fmt < p && *fmt; fmt++ ) {
601                 switch ( *fmt ) {
602                 case 'a':       /* octet string - allocate storage as needed */
603                         ss = va_arg( ap, char ** );
604                         NSLBERI_FREE(*ss);
605                         *ss = NULL;
606                         break;
607 
608                 case 'b':       /* boolean */
609                         i = va_arg( ap, int * );
610                         break;
611 
612                 case 'e':       /* enumerated */
613                 case 'i':       /* int */
614                         l = va_arg( ap, ber_slen_t * );
615                         break;
616 
617                 case 'l':       /* length of next item */
618                         l = va_arg( ap, ber_slen_t * );
619                         break;
620 
621                 case 'n':       /* null */
622                         break;
623 
624                 case 's':       /* octet string - in a buffer */
625                         s = va_arg( ap, char * );
626                         l = va_arg( ap, ber_slen_t * );
627                         break;
628 
629                 case 'o':       /* octet string in a supplied berval */
630                         bval = va_arg( ap, struct berval * );
631                         if (bval->bv_val) NSLBERI_FREE(bval->bv_val);
632                         memset(bval, 0, sizeof(struct berval));
633                         break;
634 
635                 case 'O':       /* octet string - allocate & include length */
636                         bvp = va_arg( ap, struct berval ** );
637                         ber_bvfree(*bvp);
638                         bvp = NULL;
639                         break;
640 
641                 case 'B':       /* bit string - allocate storage as needed */
642                         ss = va_arg( ap, char ** );
643                         l = va_arg( ap, ber_slen_t * ); /* for length, in bits */
644                         if (*ss) NSLBERI_FREE(*ss);
645                         *ss = NULL;
646                         break;
647 
648                 case 't':       /* tag of next item */
649                         t = va_arg( ap, ber_tag_t * );
650                         break;
651                 case 'T':       /* skip tag of next item */
652                         t = va_arg( ap, ber_tag_t * );
653                         break;
654 
655                 case 'v':       /* sequence of strings */
656                         sss = va_arg( ap, char *** );
657                         ber_svecfree(*sss);
658                         *sss = NULL;
659                         break;
660 
661                 case 'V':       /* sequence of strings + lengths */
662                         bv = va_arg( ap, struct berval *** );
663                         ber_bvecfree(*bv);
664                         *bv = NULL;
665                         break;
666 
667                 case 'x':       /* skip the next element - whatever it is */
668                         break;
669 
670                 case '{':       /* begin sequence */
671                 case '[':       /* begin set */
672                         break;
673 
674                 case '}':       /* end sequence */
675                 case ']':       /* end set */
676                         break;
677 
678                 default:
679                         break;
680                 }
681           } /* for */
682           va_end( ap );
683         } /* if */
684 
685 
686 	return( rc );
687 }
688 
689 void
690 LDAP_CALL
ber_bvfree(struct berval * bv)691 ber_bvfree( struct berval *bv )
692 {
693 	if ( bv != NULL ) {
694 		if ( bv->bv_val != NULL ) {
695 			NSLBERI_FREE( bv->bv_val );
696 		}
697 		NSLBERI_FREE( (char *) bv );
698 	}
699 }
700 
701 void
702 LDAP_CALL
ber_bvecfree(struct berval ** bv)703 ber_bvecfree( struct berval **bv )
704 {
705 	int	i;
706 
707 	if ( bv != NULL ) {
708 		for ( i = 0; bv[i] != NULL; i++ ) {
709 			ber_bvfree( bv[i] );
710 		}
711 		NSLBERI_FREE( (char *) bv );
712 	}
713 }
714 
715 struct berval *
716 LDAP_CALL
ber_bvdup(const struct berval * bv)717 ber_bvdup( const struct berval *bv )
718 {
719 	struct berval	*new;
720 
721 	if ( (new = (struct berval *)NSLBERI_MALLOC( sizeof(struct berval) ))
722 	    == NULL ) {
723 		return( NULL );
724 	}
725 	if ( bv->bv_val == NULL ) {
726 	    new->bv_val = NULL;
727 	    new->bv_len = 0;
728 	} else {
729 	    if ( (new->bv_val = (char *)NSLBERI_MALLOC( bv->bv_len + 1 ))
730 		== NULL ) {
731 		    return( NULL );
732 	    }
733 	    SAFEMEMCPY( new->bv_val, bv->bv_val, (size_t) bv->bv_len );
734 	    new->bv_val[bv->bv_len] = '\0';
735 	    new->bv_len = bv->bv_len;
736 	}
737 
738 	return( new );
739 }
740 
741 void
742 LDAP_CALL
ber_svecfree(char ** vals)743 ber_svecfree( char **vals )
744 {
745         int     i;
746 
747         if ( vals == NULL )
748                 return;
749         for ( i = 0; vals[i] != NULL; i++ )
750                 NSLBERI_FREE( vals[i] );
751         NSLBERI_FREE( (char *) vals );
752 }
753 
754 #ifdef STR_TRANSLATION
755 void
756 LDAP_CALL
ber_set_string_translators(BerElement * ber,BERTranslateProc encode_proc,BERTranslateProc decode_proc)757 ber_set_string_translators(
758     BerElement		*ber,
759     BERTranslateProc	encode_proc,
760     BERTranslateProc	decode_proc
761 )
762 {
763     ber->ber_encode_translate_proc = encode_proc;
764     ber->ber_decode_translate_proc = decode_proc;
765 }
766 #endif /* STR_TRANSLATION */
767