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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:35:32 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:35:32 +0000
commit5ea77a75dd2d2158401331879f3c8f47940a732c (patch)
treed89dc06e9f4850a900f161e25f84e922c4f86cc8 /libraries/liblber/decode.c
parentInitial commit. (diff)
downloadopenldap-5ea77a75dd2d2158401331879f3c8f47940a732c.tar.xz
openldap-5ea77a75dd2d2158401331879f3c8f47940a732c.zip
Adding upstream version 2.5.13+dfsg.upstream/2.5.13+dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'libraries/liblber/decode.c')
-rw-r--r--libraries/liblber/decode.c1026
1 files changed, 1026 insertions, 0 deletions
diff --git a/libraries/liblber/decode.c b/libraries/liblber/decode.c
new file mode 100644
index 0000000..48696e0
--- /dev/null
+++ b/libraries/liblber/decode.c
@@ -0,0 +1,1026 @@
+/* decode.c - ber input decoding routines */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* Portions Copyright (c) 1990 Regents of the University of Michigan.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that this notice is preserved and that due credit is given
+ * to the University of Michigan at Ann Arbor. The name of the University
+ * may not be used to endorse or promote products derived from this
+ * software without specific prior written permission. This software
+ * is provided ``as is'' without express or implied warranty.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was originally developed by the University of Michigan
+ * (as part of U-MICH LDAP).
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/stdlib.h>
+#include <ac/stdarg.h>
+#include <ac/string.h>
+#include <ac/socket.h>
+
+#include "lber-int.h"
+
+
+/* out->bv_len should be the buffer size on input */
+int
+ber_decode_oid( BerValue *in, BerValue *out )
+{
+ const unsigned char *der;
+ unsigned long val;
+ unsigned val1;
+ ber_len_t i;
+ char *ptr;
+
+ assert( in != NULL );
+ assert( out != NULL );
+
+ /* need 4 chars/inbyte + \0 for input={7f 7f 7f...} */
+ if ( !out->bv_val || (out->bv_len+3)/4 <= in->bv_len )
+ return -1;
+
+ ptr = NULL;
+ der = (unsigned char *) in->bv_val;
+ val = 0;
+ for ( i=0; i < in->bv_len; i++ ) {
+ val |= der[i] & 0x7f;
+ if ( !( der[i] & 0x80 )) {
+ if ( ptr == NULL ) {
+ /* Initial "x.y": val=x*40+y, x<=2, y<40 if x<2 */
+ ptr = out->bv_val;
+ val1 = (val < 80 ? val/40 : 2);
+ val -= val1*40;
+ ptr += sprintf( ptr, "%u", val1 );
+ }
+ ptr += sprintf( ptr, ".%lu", val );
+ val = 0;
+ } else if ( val - 1UL < LBER_OID_COMPONENT_MAX >> 7 ) {
+ val <<= 7;
+ } else {
+ /* val would overflow, or is 0 from invalid initial 0x80 octet */
+ return -1;
+ }
+ }
+ if ( ptr == NULL || val != 0 )
+ return -1;
+
+ out->bv_len = ptr - out->bv_val;
+ return 0;
+}
+
+/* Return tag, with *bv = rest of element (starting at length octets) */
+static ber_tag_t
+ber_tag_and_rest( const BerElement *ber, struct berval *bv )
+{
+ ber_tag_t tag;
+ ptrdiff_t rest;
+ unsigned char *ptr;
+
+ assert( ber != NULL );
+ assert( LBER_VALID( ber ) );
+
+ ptr = (unsigned char *) ber->ber_ptr;
+ rest = (unsigned char *) ber->ber_end - ptr;
+ if ( rest <= 0 ) {
+ goto fail;
+ }
+
+ tag = ber->ber_tag;
+ if ( (char *) ptr == ber->ber_buf ) {
+ tag = *ptr;
+ }
+ ptr++;
+ rest--;
+ if ( (tag & LBER_BIG_TAG_MASK) != LBER_BIG_TAG_MASK ) {
+ goto done;
+ }
+
+ do {
+ if ( rest <= 0 ) {
+ break;
+ }
+ tag <<= 8;
+ tag |= *ptr++ & 0xffU;
+ rest--;
+
+ if ( ! (tag & LBER_MORE_TAG_MASK) ) {
+ goto done;
+ }
+ } while ( tag <= (ber_tag_t)-1 / 256 );
+
+ fail:
+ /* Error or unsupported tag size */
+ tag = LBER_DEFAULT;
+
+ done:
+ bv->bv_len = rest;
+ bv->bv_val = (char *) ptr;
+ return tag;
+}
+
+/* Return the tag - LBER_DEFAULT returned means trouble */
+ber_tag_t
+ber_get_tag( BerElement *ber )
+{
+ struct berval bv;
+ ber_tag_t tag = ber_tag_and_rest( ber, &bv );
+
+ ber->ber_ptr = bv.bv_val;
+ return tag;
+}
+
+/* Return next element's tag and point *bv at its contents in-place */
+ber_tag_t
+ber_peek_element( const BerElement *ber, struct berval *bv )
+{
+ ber_tag_t tag;
+ ber_len_t len, rest;
+ unsigned i;
+ unsigned char *ptr;
+
+ assert( bv != NULL );
+
+ /*
+ * Any ber element looks like this: tag length contents.
+ * Assuming everything's ok, we return the tag, and point
+ * bv at the contents.
+ *
+ * Assumptions:
+ * 1) definite lengths
+ * 2) primitive encodings used whenever possible
+ */
+
+ len = 0;
+
+ /*
+ * First, we read the tag.
+ */
+ tag = ber_tag_and_rest( ber, bv );
+
+ rest = bv->bv_len;
+ ptr = (unsigned char *) bv->bv_val;
+ if ( tag == LBER_DEFAULT || rest == 0 ) {
+ goto fail;
+ }
+
+ /*
+ * Next, read the length. The first octet determines the length
+ * of the length. If bit 8 is 0, the length is the short form,
+ * otherwise if the octet != 0x80 it's the long form, otherwise
+ * the ber element has the unsupported indefinite-length format.
+ * Lengths that do not fit in a ber_len_t are not accepted.
+ */
+
+ len = *ptr++;
+ rest--;
+
+ if ( len & 0x80U ) {
+ len &= 0x7fU;
+ if ( len - 1U > sizeof(ber_len_t) - 1U || rest < len ) {
+ /* Indefinite-length/too long length/not enough data */
+ goto fail;
+ }
+
+ rest -= len;
+ i = len;
+ for( len = *ptr++ & 0xffU; --i; len |= *ptr++ & 0xffU ) {
+ len <<= 8;
+ }
+ }
+
+ /* BER element should have enough data left */
+ if( len > rest ) {
+ fail:
+ tag = LBER_DEFAULT;
+ }
+
+ bv->bv_len = len;
+ bv->bv_val = (char *) ptr;
+ return tag;
+}
+
+/* Move past next element, point *bv at it in-place, and return its tag.
+ * The caller may \0-terminate *bv, as next octet is saved in ber->ber_tag.
+ * Similar to ber_get_stringbv(ber, bv, LBER_BV_NOTERM) except on error.
+ */
+ber_tag_t
+ber_skip_element( BerElement *ber, struct berval *bv )
+{
+ ber_tag_t tag = ber_peek_element( ber, bv );
+
+ if ( tag != LBER_DEFAULT ) {
+ ber->ber_ptr = bv->bv_val + bv->bv_len;
+ ber->ber_tag = *(unsigned char *) ber->ber_ptr;
+ }
+
+ return tag;
+}
+
+/* Move past next element, point *bv at the complete element in-place, and
+ * return its tag. The caller may \0-terminate *bv, as next octet is saved in
+ * ber->ber_tag. Similar to ber_skip_element(ber, bv) except the tag+length
+ * header is also included in *bv.
+ */
+ber_tag_t
+ber_skip_raw( BerElement *ber, struct berval *bv )
+{
+ char *val = ber->ber_ptr;
+ ber_tag_t tag = ber_skip_element( ber, bv );
+
+ if ( tag != LBER_DEFAULT ) {
+ bv->bv_len += bv->bv_val - val;
+ bv->bv_val = val;
+ }
+
+ return tag;
+}
+
+ber_tag_t
+ber_peek_tag(
+ BerElement *ber,
+ ber_len_t *len )
+{
+ struct berval bv;
+ ber_tag_t tag = ber_peek_element( ber, &bv );
+
+ *len = bv.bv_len;
+ return tag;
+}
+
+ber_tag_t
+ber_skip_tag( BerElement *ber, ber_len_t *lenp )
+{
+ struct berval bv;
+ ber_tag_t tag = ber_peek_element( ber, &bv );
+
+ ber->ber_ptr = bv.bv_val;
+ ber->ber_tag = *(unsigned char *) ber->ber_ptr;
+
+ *lenp = bv.bv_len;
+ return tag;
+}
+
+ber_tag_t
+ber_get_int(
+ BerElement *ber,
+ ber_int_t *num )
+{
+ struct berval bv;
+ ber_tag_t tag = ber_skip_element( ber, &bv );
+
+ if ( tag == LBER_DEFAULT ) {
+ return tag;
+ }
+
+ return ber_decode_int( &bv, num ) ? LBER_DEFAULT : tag;
+}
+
+int
+ber_decode_int( const struct berval *bv, ber_int_t *num )
+{
+ ber_len_t len = bv->bv_len;
+ if ( len > sizeof(ber_int_t) )
+ return -1;
+
+ assert( num != NULL );
+
+ /* parse two's complement integer */
+ if( len ) {
+ unsigned char *buf = (unsigned char *) bv->bv_val;
+ ber_len_t i;
+ ber_int_t netnum = buf[0] & 0xff;
+
+ /* sign extend */
+ netnum = (netnum ^ 0x80) - 0x80;
+
+ /* shift in the bytes */
+ for( i = 1; i < len; i++ ) {
+ netnum = (netnum << 8 ) | buf[i];
+ }
+
+ *num = netnum;
+
+ } else {
+ *num = 0;
+ }
+
+ return 0;
+}
+
+ber_tag_t
+ber_get_enum(
+ BerElement *ber,
+ ber_int_t *num )
+{
+ return ber_get_int( ber, num );
+}
+
+ber_tag_t
+ber_get_stringb(
+ BerElement *ber,
+ char *buf,
+ ber_len_t *len )
+{
+ struct berval bv;
+ ber_tag_t tag;
+
+ if ( (tag = ber_skip_element( ber, &bv )) == LBER_DEFAULT ) {
+ return LBER_DEFAULT;
+ }
+
+ /* must fit within allocated space with termination */
+ if ( bv.bv_len >= *len ) {
+ return LBER_DEFAULT;
+ }
+
+ memcpy( buf, bv.bv_val, bv.bv_len );
+ buf[bv.bv_len] = '\0';
+
+ *len = bv.bv_len;
+ return tag;
+}
+
+/* Definitions for get_string vector
+ *
+ * ChArray, BvArray, and BvVec are self-explanatory.
+ * BvOff is a struct berval embedded in an array of larger structures
+ * of siz bytes at off bytes from the beginning of the struct.
+ */
+enum bgbvc { ChArray, BvArray, BvVec, BvOff };
+
+/* Use this single cookie for state, to keep actual
+ * stack use to the absolute minimum.
+ */
+typedef struct bgbvr {
+ const enum bgbvc choice;
+ const int option; /* (ALLOC unless BvOff) | (STRING if ChArray) */
+ ber_len_t siz; /* input array element size, output count */
+ ber_len_t off; /* BvOff offset to the struct berval */
+ void *result;
+} bgbvr;
+
+static ber_tag_t
+ber_get_stringbvl( BerElement *ber, bgbvr *b )
+{
+ int i = 0, n;
+ ber_tag_t tag;
+ ber_len_t tot_size = 0, siz = b->siz;
+ char *last, *orig;
+ struct berval bv, *bvp = NULL;
+ union stringbvl_u {
+ char **ca; /* ChArray */
+ BerVarray ba; /* BvArray */
+ struct berval **bv; /* BvVec */
+ char *bo; /* BvOff */
+ } res;
+
+ tag = ber_skip_tag( ber, &bv.bv_len );
+
+ if ( tag != LBER_DEFAULT ) {
+ tag = 0;
+ orig = ber->ber_ptr;
+ last = orig + bv.bv_len;
+
+ for ( ; ber->ber_ptr < last; i++, tot_size += siz ) {
+ if ( ber_skip_element( ber, &bv ) == LBER_DEFAULT )
+ break;
+ }
+ if ( ber->ber_ptr != last ) {
+ i = 0;
+ tag = LBER_DEFAULT;
+ }
+
+ ber->ber_ptr = orig;
+ ber->ber_tag = *(unsigned char *) orig;
+ }
+
+ b->siz = i;
+ if ( i == 0 ) {
+ return tag;
+ }
+
+ /* Allocate and NULL-terminate the result vector */
+ b->result = ber_memalloc_x( tot_size + siz, ber->ber_memctx );
+ if ( b->result == NULL ) {
+ return LBER_DEFAULT;
+ }
+ switch (b->choice) {
+ case ChArray:
+ res.ca = b->result;
+ res.ca[i] = NULL;
+ break;
+ case BvArray:
+ res.ba = b->result;
+ res.ba[i].bv_val = NULL;
+ break;
+ case BvVec:
+ res.bv = b->result;
+ res.bv[i] = NULL;
+ break;
+ case BvOff:
+ res.bo = (char *) b->result + b->off;
+ ((struct berval *) (res.bo + tot_size))->bv_val = NULL;
+ tot_size = 0;
+ break;
+ }
+
+ n = 0;
+ do {
+ tag = ber_get_stringbv( ber, &bv, b->option );
+ if ( tag == LBER_DEFAULT ) {
+ goto failed;
+ }
+
+ /* store my result */
+ switch (b->choice) {
+ case ChArray:
+ res.ca[n] = bv.bv_val;
+ break;
+ case BvArray:
+ res.ba[n] = bv;
+ break;
+ case BvVec:
+ bvp = ber_memalloc_x( sizeof( struct berval ),
+ ber->ber_memctx );
+ if ( !bvp ) {
+ ber_memfree_x( bv.bv_val, ber->ber_memctx );
+ goto failed;
+ }
+ res.bv[n] = bvp;
+ *bvp = bv;
+ break;
+ case BvOff:
+ *(struct berval *)(res.bo + tot_size) = bv;
+ tot_size += siz;
+ break;
+ }
+ } while (++n < i);
+ return tag;
+
+failed:
+ if (b->choice != BvOff) { /* BvOff does not have LBER_BV_ALLOC set */
+ while (--n >= 0) {
+ switch(b->choice) {
+ case ChArray:
+ ber_memfree_x(res.ca[n], ber->ber_memctx);
+ break;
+ case BvArray:
+ ber_memfree_x(res.ba[n].bv_val, ber->ber_memctx);
+ break;
+ case BvVec:
+ ber_memfree_x(res.bv[n]->bv_val, ber->ber_memctx);
+ ber_memfree_x(res.bv[n], ber->ber_memctx);
+ break;
+ default:
+ break;
+ }
+ }
+ }
+ ber_memfree_x(b->result, ber->ber_memctx);
+ b->result = NULL;
+ return LBER_DEFAULT;
+}
+
+ber_tag_t
+ber_get_stringbv( BerElement *ber, struct berval *bv, int option )
+{
+ ber_tag_t tag;
+ char *data;
+
+ tag = ber_skip_element( ber, bv );
+ if ( tag == LBER_DEFAULT ||
+ (( option & LBER_BV_STRING ) &&
+ bv->bv_len && memchr( bv->bv_val, 0, bv->bv_len - 1 )))
+ {
+ bv->bv_val = NULL;
+ return LBER_DEFAULT;
+ }
+
+ data = bv->bv_val;
+ if ( option & LBER_BV_ALLOC ) {
+ bv->bv_val = (char *) ber_memalloc_x( bv->bv_len + 1,
+ ber->ber_memctx );
+ if ( bv->bv_val == NULL ) {
+ return LBER_DEFAULT;
+ }
+
+ if ( bv->bv_len != 0 ) {
+ memcpy( bv->bv_val, data, bv->bv_len );
+ }
+ data = bv->bv_val;
+ }
+ if ( !( option & LBER_BV_NOTERM ))
+ data[bv->bv_len] = '\0';
+
+ return tag;
+}
+
+ber_tag_t
+ber_get_stringbv_null( BerElement *ber, struct berval *bv, int option )
+{
+ ber_tag_t tag;
+ char *data;
+
+ tag = ber_skip_element( ber, bv );
+ if ( tag == LBER_DEFAULT || bv->bv_len == 0 ) {
+ bv->bv_val = NULL;
+ return tag;
+ }
+
+ if (( option & LBER_BV_STRING ) &&
+ memchr( bv->bv_val, 0, bv->bv_len - 1 ))
+ {
+ bv->bv_val = NULL;
+ return LBER_DEFAULT;
+ }
+
+ data = bv->bv_val;
+ if ( option & LBER_BV_ALLOC ) {
+ bv->bv_val = (char *) ber_memalloc_x( bv->bv_len + 1,
+ ber->ber_memctx );
+ if ( bv->bv_val == NULL ) {
+ return LBER_DEFAULT;
+ }
+
+ memcpy( bv->bv_val, data, bv->bv_len );
+ data = bv->bv_val;
+ }
+ if ( !( option & LBER_BV_NOTERM ))
+ data[bv->bv_len] = '\0';
+
+ return tag;
+}
+
+ber_tag_t
+ber_get_stringa( BerElement *ber, char **buf )
+{
+ BerValue bv;
+ ber_tag_t tag;
+
+ assert( buf != NULL );
+
+ tag = ber_get_stringbv( ber, &bv, LBER_BV_ALLOC | LBER_BV_STRING );
+ *buf = bv.bv_val;
+
+ return tag;
+}
+
+ber_tag_t
+ber_get_stringa_null( BerElement *ber, char **buf )
+{
+ BerValue bv;
+ ber_tag_t tag;
+
+ assert( buf != NULL );
+
+ tag = ber_get_stringbv_null( ber, &bv, LBER_BV_ALLOC | LBER_BV_STRING );
+ *buf = bv.bv_val;
+
+ return tag;
+}
+
+ber_tag_t
+ber_get_stringal( BerElement *ber, struct berval **bv )
+{
+ ber_tag_t tag;
+
+ assert( ber != NULL );
+ assert( bv != NULL );
+
+ *bv = (struct berval *) ber_memalloc_x( sizeof(struct berval),
+ ber->ber_memctx );
+ if ( *bv == NULL ) {
+ return LBER_DEFAULT;
+ }
+
+ tag = ber_get_stringbv( ber, *bv, LBER_BV_ALLOC );
+ if ( tag == LBER_DEFAULT ) {
+ ber_memfree_x( *bv, ber->ber_memctx );
+ *bv = NULL;
+ }
+ return tag;
+}
+
+ber_tag_t
+ber_get_bitstringa(
+ BerElement *ber,
+ char **buf,
+ ber_len_t *blen )
+{
+ ber_tag_t tag;
+ struct berval data;
+ unsigned char unusedbits;
+
+ assert( buf != NULL );
+ assert( blen != NULL );
+
+ if ( (tag = ber_skip_element( ber, &data )) == LBER_DEFAULT ) {
+ goto fail;
+ }
+
+ if ( --data.bv_len > (ber_len_t)-1 / 8 ) {
+ goto fail;
+ }
+ unusedbits = *(unsigned char *) data.bv_val++;
+ if ( unusedbits > 7 ) {
+ goto fail;
+ }
+
+ if ( memchr( data.bv_val, 0, data.bv_len )) {
+ goto fail;
+ }
+
+ *buf = (char *) ber_memalloc_x( data.bv_len, ber->ber_memctx );
+ if ( *buf == NULL ) {
+ return LBER_DEFAULT;
+ }
+ memcpy( *buf, data.bv_val, data.bv_len );
+
+ *blen = data.bv_len * 8 - unusedbits;
+ return tag;
+
+ fail:
+ *buf = NULL;
+ return LBER_DEFAULT;
+}
+
+ber_tag_t
+ber_get_null( BerElement *ber )
+{
+ ber_len_t len;
+ ber_tag_t tag = ber_skip_tag( ber, &len );
+
+ return( len == 0 ? tag : LBER_DEFAULT );
+}
+
+ber_tag_t
+ber_get_boolean(
+ BerElement *ber,
+ ber_int_t *boolval )
+{
+ return ber_get_int( ber, boolval );
+}
+
+ber_tag_t
+ber_first_element(
+ BerElement *ber,
+ ber_len_t *len,
+ char **last )
+{
+ assert( last != NULL );
+
+ /* skip the sequence header, use the len to mark where to stop */
+ if ( ber_skip_tag( ber, len ) == LBER_DEFAULT ) {
+ *last = NULL;
+ return LBER_DEFAULT;
+ }
+
+ *last = ber->ber_ptr + *len;
+
+ if ( *len == 0 ) {
+ return LBER_DEFAULT;
+ }
+
+ return ber_peek_tag( ber, len );
+}
+
+ber_tag_t
+ber_next_element(
+ BerElement *ber,
+ ber_len_t *len,
+ LDAP_CONST char *last )
+{
+ assert( ber != NULL );
+ assert( last != NULL );
+ assert( LBER_VALID( ber ) );
+
+ if ( ber->ber_ptr >= last ) {
+ return LBER_DEFAULT;
+ }
+
+ return ber_peek_tag( ber, len );
+}
+
+/* VARARGS */
+ber_tag_t
+ber_scanf ( BerElement *ber,
+ LDAP_CONST char *fmt,
+ ... )
+{
+ va_list ap;
+ LDAP_CONST char *fmt_reset;
+ char *s, **ss, ***sss;
+ struct berval data, *bval, **bvp, ***bvpp;
+ ber_int_t *i;
+ ber_len_t *l;
+ ber_tag_t *t;
+ ber_tag_t rc;
+ ber_len_t len;
+
+ va_start( ap, fmt );
+
+ assert( ber != NULL );
+ assert( fmt != NULL );
+ assert( LBER_VALID( ber ) );
+
+ fmt_reset = fmt;
+
+ if ( ber->ber_debug & (LDAP_DEBUG_TRACE|LDAP_DEBUG_BER)) {
+ ber_log_printf( LDAP_DEBUG_TRACE, ber->ber_debug,
+ "ber_scanf fmt (%s) ber:\n", fmt );
+ ber_log_dump( LDAP_DEBUG_BER, ber->ber_debug, ber, 1 );
+ }
+
+ for ( rc = 0; *fmt && rc != LBER_DEFAULT; fmt++ ) {
+ /* When this is modified, remember to update
+ * the error-cleanup code below accordingly. */
+ switch ( *fmt ) {
+ case '!': { /* Hook */
+ BERDecodeCallback *f;
+ void *p;
+
+ f = va_arg( ap, BERDecodeCallback * );
+ p = va_arg( ap, void * );
+
+ rc = (*f)( ber, p, 0 );
+ } break;
+
+ case 'a': /* octet string - allocate storage as needed */
+ ss = va_arg( ap, char ** );
+ rc = ber_get_stringa( ber, ss );
+ break;
+
+ case 'A': /* octet string - allocate storage as needed,
+ * but return NULL if len == 0 */
+ ss = va_arg( ap, char ** );
+ rc = ber_get_stringa_null( ber, ss );
+ break;
+
+ case 'b': /* boolean */
+ i = va_arg( ap, ber_int_t * );
+ rc = ber_get_boolean( ber, i );
+ break;
+
+ case 'B': /* bit string - allocate storage as needed */
+ ss = va_arg( ap, char ** );
+ l = va_arg( ap, ber_len_t * ); /* for length, in bits */
+ rc = ber_get_bitstringa( ber, ss, l );
+ break;
+
+ case 'e': /* enumerated */
+ case 'i': /* integer */
+ i = va_arg( ap, ber_int_t * );
+ rc = ber_get_int( ber, i );
+ break;
+
+ case 'l': /* length of next item */
+ l = va_arg( ap, ber_len_t * );
+ rc = ber_peek_tag( ber, l );
+ break;
+
+ case 'm': /* octet string in berval, in-place */
+ bval = va_arg( ap, struct berval * );
+ rc = ber_get_stringbv( ber, bval, 0 );
+ break;
+
+ case 'M': /* bvoffarray - must include address of
+ * a record len, and record offset.
+ * number of records will be returned thru
+ * len ptr on finish. parsed in-place.
+ */
+ {
+ bgbvr cookie = { BvOff, 0 };
+ bvp = va_arg( ap, struct berval ** );
+ l = va_arg( ap, ber_len_t * );
+ cookie.siz = *l;
+ cookie.off = va_arg( ap, ber_len_t );
+ rc = ber_get_stringbvl( ber, &cookie );
+ *bvp = cookie.result;
+ *l = cookie.siz;
+ break;
+ }
+
+ case 'n': /* null */
+ rc = ber_get_null( ber );
+ break;
+
+ case 'o': /* octet string in a supplied berval */
+ bval = va_arg( ap, struct berval * );
+ rc = ber_get_stringbv( ber, bval, LBER_BV_ALLOC );
+ break;
+
+ case 'O': /* octet string - allocate & include length */
+ bvp = va_arg( ap, struct berval ** );
+ rc = ber_get_stringal( ber, bvp );
+ break;
+
+ case 's': /* octet string - in a buffer */
+ s = va_arg( ap, char * );
+ l = va_arg( ap, ber_len_t * );
+ rc = ber_get_stringb( ber, s, l );
+ break;
+
+ case 't': /* tag of next item */
+ t = va_arg( ap, ber_tag_t * );
+ *t = rc = ber_peek_tag( ber, &len );
+ break;
+
+ case 'T': /* skip tag of next item */
+ t = va_arg( ap, ber_tag_t * );
+ *t = rc = ber_skip_tag( ber, &len );
+ break;
+
+ case 'v': /* sequence of strings */
+ {
+ bgbvr cookie = {
+ ChArray, LBER_BV_ALLOC | LBER_BV_STRING, sizeof( char * )
+ };
+ rc = ber_get_stringbvl( ber, &cookie );
+ *(va_arg( ap, char *** )) = cookie.result;
+ break;
+ }
+
+ case 'V': /* sequence of strings + lengths */
+ {
+ bgbvr cookie = {
+ BvVec, LBER_BV_ALLOC, sizeof( struct berval * )
+ };
+ rc = ber_get_stringbvl( ber, &cookie );
+ *(va_arg( ap, struct berval *** )) = cookie.result;
+ break;
+ }
+
+ case 'W': /* bvarray */
+ {
+ bgbvr cookie = {
+ BvArray, LBER_BV_ALLOC, sizeof( struct berval )
+ };
+ rc = ber_get_stringbvl( ber, &cookie );
+ *(va_arg( ap, struct berval ** )) = cookie.result;
+ break;
+ }
+
+ case 'x': /* skip the next element - whatever it is */
+ rc = ber_skip_element( ber, &data );
+ break;
+
+ case '{': /* begin sequence */
+ case '[': /* begin set */
+ switch ( fmt[1] ) {
+ case 'v': case 'V': case 'W': case 'M':
+ break;
+ default:
+ rc = ber_skip_tag( ber, &len );
+ break;
+ }
+ break;
+
+ case '}': /* end sequence */
+ case ']': /* end set */
+ break;
+
+ default:
+ if( ber->ber_debug ) {
+ ber_log_printf( LDAP_DEBUG_ANY, ber->ber_debug,
+ "ber_scanf: unknown fmt %c\n", *fmt );
+ }
+ rc = LBER_DEFAULT;
+ break;
+ }
+ }
+
+ va_end( ap );
+
+ if ( rc == LBER_DEFAULT ) {
+ /*
+ * Error. Reclaim malloced memory that was given to the caller.
+ * Set allocated pointers to NULL, "data length" outvalues to 0.
+ */
+ va_start( ap, fmt );
+
+ for ( ; fmt_reset < fmt; fmt_reset++ ) {
+ switch ( *fmt_reset ) {
+ case '!': { /* Hook */
+ BERDecodeCallback *f;
+ void *p;
+
+ f = va_arg( ap, BERDecodeCallback * );
+ p = va_arg( ap, void * );
+
+ (void) (*f)( ber, p, 1 );
+ } break;
+
+ case 'a': /* octet string - allocate storage as needed */
+ case 'A':
+ ss = va_arg( ap, char ** );
+ ber_memfree_x( *ss, ber->ber_memctx );
+ *ss = NULL;
+ break;
+
+ case 'b': /* boolean */
+ case 'e': /* enumerated */
+ case 'i': /* integer */
+ (void) va_arg( ap, ber_int_t * );
+ break;
+
+ case 'l': /* length of next item */
+ *(va_arg( ap, ber_len_t * )) = 0;
+ break;
+
+ case 'm': /* berval in-place */
+ bval = va_arg( ap, struct berval * );
+ BER_BVZERO( bval );
+ break;
+
+ case 'M': /* BVoff array in-place */
+ bvp = va_arg( ap, struct berval ** );
+ ber_memfree_x( *bvp, ber->ber_memctx );
+ *bvp = NULL;
+ *(va_arg( ap, ber_len_t * )) = 0;
+ (void) va_arg( ap, ber_len_t );
+ break;
+
+ case 'o': /* octet string in a supplied berval */
+ bval = va_arg( ap, struct berval * );
+ ber_memfree_x( bval->bv_val, ber->ber_memctx );
+ BER_BVZERO( bval );
+ break;
+
+ case 'O': /* octet string - allocate & include length */
+ bvp = va_arg( ap, struct berval ** );
+ ber_bvfree_x( *bvp, ber->ber_memctx );
+ *bvp = NULL;
+ break;
+
+ case 's': /* octet string - in a buffer */
+ (void) va_arg( ap, char * );
+ *(va_arg( ap, ber_len_t * )) = 0;
+ break;
+
+ case 't': /* tag of next item */
+ case 'T': /* skip tag of next item */
+ (void) va_arg( ap, ber_tag_t * );
+ break;
+
+ case 'B': /* bit string - allocate storage as needed */
+ ss = va_arg( ap, char ** );
+ ber_memfree_x( *ss, ber->ber_memctx );
+ *ss = NULL;
+ *(va_arg( ap, ber_len_t * )) = 0; /* for length, in bits */
+ break;
+
+ case 'v': /* sequence of strings */
+ sss = va_arg( ap, char *** );
+ ber_memvfree_x( (void **) *sss, ber->ber_memctx );
+ *sss = NULL;
+ break;
+
+ case 'V': /* sequence of strings + lengths */
+ bvpp = va_arg( ap, struct berval *** );
+ ber_bvecfree_x( *bvpp, ber->ber_memctx );
+ *bvpp = NULL;
+ break;
+
+ case 'W': /* BerVarray */
+ bvp = va_arg( ap, struct berval ** );
+ ber_bvarray_free_x( *bvp, ber->ber_memctx );
+ *bvp = NULL;
+ break;
+
+ case 'n': /* null */
+ case 'x': /* skip the next element - whatever it is */
+ case '{': /* begin sequence */
+ case '[': /* begin set */
+ case '}': /* end sequence */
+ case ']': /* end set */
+ break;
+
+ default:
+ /* format should be good */
+ assert( 0 );
+ }
+ }
+
+ va_end( ap );
+ }
+
+ return rc;
+}