/* decode.c - ber input decoding routines */
/*
+ * Copyright 1998-1999 The OpenLDAP Foundation, All Rights Reserved.
+ * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+ */
+/* Portions
* Copyright (c) 1990 Regents of the University of Michigan.
* All rights reserved.
*
#ifdef STR_TRANSLATION
if ( datalen > 0 && ( ber->ber_options & LBER_TRANSLATE_STRINGS ) != 0
- && ber->ber_decode_translate_proc != NULL ) {
+ && ber->ber_decode_translate_proc ) {
transbuf = buf;
++datalen;
if ( (*(ber->ber_decode_translate_proc))( &transbuf, &datalen,
{
unsigned long datalen, tag;
- if ( (tag = ber_skip_tag( ber, &datalen )) == LBER_DEFAULT )
+ if ( (tag = ber_skip_tag( ber, &datalen )) == LBER_DEFAULT ) {
+ *buf = NULL;
return( LBER_DEFAULT );
+ }
if ( (*buf = (char *) malloc( (size_t)datalen + 1 )) == NULL )
return( LBER_DEFAULT );
- if ( (unsigned long) ber_read( ber, *buf, datalen ) != datalen )
+ if ( (unsigned long) ber_read( ber, *buf, datalen ) != datalen ) {
+ free( *buf );
+ *buf = NULL;
return( LBER_DEFAULT );
+ }
(*buf)[datalen] = '\0';
#ifdef STR_TRANSLATION
if ( datalen > 0 && ( ber->ber_options & LBER_TRANSLATE_STRINGS ) != 0
- && ber->ber_decode_translate_proc != NULL ) {
+ && ber->ber_decode_translate_proc ) {
++datalen;
if ( (*(ber->ber_decode_translate_proc))( buf, &datalen, 1 )
!= 0 ) {
free( *buf );
+ *buf = NULL;
return( LBER_DEFAULT );
}
}
{
unsigned long len, tag;
- if ( (*bv = (struct berval *) malloc( sizeof(struct berval) )) == NULL )
+ if ( (tag = ber_skip_tag( ber, &len )) == LBER_DEFAULT ) {
+ *bv = NULL;
return( LBER_DEFAULT );
+ }
- if ( (tag = ber_skip_tag( ber, &len )) == LBER_DEFAULT )
+ if ( (*bv = (struct berval *) malloc( sizeof(struct berval) )) == NULL )
return( LBER_DEFAULT );
- if ( ((*bv)->bv_val = (char *) malloc( (size_t)len + 1 )) == NULL )
+ if ( ((*bv)->bv_val = (char *) malloc( (size_t)len + 1 )) == NULL ) {
+ free( *bv );
+ *bv = NULL;
return( LBER_DEFAULT );
+ }
- if ( (unsigned long) ber_read( ber, (*bv)->bv_val, len ) != len )
+ if ( (unsigned long) ber_read( ber, (*bv)->bv_val, len ) != len ) {
+ ber_bvfree( *bv );
+ *bv = NULL;
return( LBER_DEFAULT );
+ }
((*bv)->bv_val)[len] = '\0';
(*bv)->bv_len = len;
#ifdef STR_TRANSLATION
if ( len > 0 && ( ber->ber_options & LBER_TRANSLATE_STRINGS ) != 0
- && ber->ber_decode_translate_proc != NULL ) {
+ && ber->ber_decode_translate_proc ) {
++len;
if ( (*(ber->ber_decode_translate_proc))( &((*bv)->bv_val),
&len, 1 ) != 0 ) {
- free( (*bv)->bv_val );
+ ber_bvfree( *bv );
+ *bv = NULL;
return( LBER_DEFAULT );
}
(*bv)->bv_len = len - 1;
unsigned long datalen, tag;
unsigned char unusedbits;
- if ( (tag = ber_skip_tag( ber, &datalen )) == LBER_DEFAULT )
+ if ( (tag = ber_skip_tag( ber, &datalen )) == LBER_DEFAULT ) {
+ *buf = NULL;
return( LBER_DEFAULT );
+ }
--datalen;
if ( (*buf = (char *) malloc( (size_t)datalen )) == NULL )
return( LBER_DEFAULT );
- if ( ber_read( ber, (char *)&unusedbits, 1 ) != 1 )
+ if ( ber_read( ber, (char *)&unusedbits, 1 ) != 1 ) {
+ free( buf );
+ *buf = NULL;
return( LBER_DEFAULT );
+ }
- if ( (unsigned long) ber_read( ber, *buf, datalen ) != datalen )
+ if ( (unsigned long) ber_read( ber, *buf, datalen ) != datalen ) {
+ free( buf );
+ *buf = NULL;
return( LBER_DEFAULT );
+ }
*blen = datalen * 8 - unusedbits;
return( tag );
{
/* 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 );
}
BerElement *ber;
char *fmt;
#endif
+ char *fmt_reset;
char *last;
char *s, **ss, ***sss;
struct berval ***bv, **bvp, *bval;
ber = va_arg( ap, BerElement * );
fmt = va_arg( ap, char * );
#endif
+ fmt_reset = fmt;
if ( ber->ber_debug ) {
lber_log_printf( LDAP_DEBUG_TRACE, ber->ber_debug,
}
for ( rc = 0; *fmt && rc != LBER_DEFAULT; fmt++ ) {
+ /* When this is modified, remember to update
+ * the error-cleanup code below accordingly. */
switch ( *fmt ) {
case 'a': /* octet string - allocate storage as needed */
ss = va_arg( ap, char ** );
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.
+ */
+#ifdef HAVE_STDARG
+ va_start( ap, fmt );
+#else
+ va_start( ap );
+ (void) va_arg( ap, BerElement * );
+ (void) va_arg( ap, char * );
+#endif
+
+ for ( ; fmt_reset < fmt; fmt_reset++ ) {
+ switch ( *fmt_reset ) {
+ case 'a': /* octet string - allocate storage as needed */
+ ss = va_arg( ap, char ** );
+ if ( *ss ) {
+ free( *ss );
+ *ss = NULL;
+ }
+ break;
+
+ case 'b': /* boolean */
+ case 't': /* tag of next item */
+ case 'T': /* skip tag of next item */
+ (void) va_arg( ap, int * );
+ break;
+
+ case 's': /* octet string - in a buffer */
+ (void) va_arg( ap, char * );
+ /* Fall through */
+ case 'e': /* enumerated */
+ case 'i': /* int */
+ case 'l': /* length of next item */
+ (void) va_arg( ap, long * );
+ break;
+
+ case 'o': /* octet string in a supplied berval */
+ bval = va_arg( ap, struct berval * );
+ if ( bval->bv_val ) {
+ free( bval->bv_val );
+ bval->bv_val = NULL;
+ }
+ bval->bv_len = 0;
+ break;
+
+ case 'O': /* octet string - allocate & include length */
+ bvp = va_arg( ap, struct berval ** );
+ if ( *bvp ) {
+ ber_bvfree( *bvp );
+ *bvp = NULL;
+ }
+ break;
+
+ case 'B': /* bit string - allocate storage as needed */
+ ss = va_arg( ap, char ** );
+ if ( *ss ) {
+ free( *ss );
+ *ss = NULL;
+ }
+ *(va_arg( ap, long * )) = 0; /* for length, in bits */
+ break;
+
+ case 'v': /* sequence of strings */
+ sss = va_arg( ap, char *** );
+ if ( *sss ) {
+ for (j = 0; (*sss)[j]; j++)
+ free( (*sss)[j] );
+ free( *sss );
+ *sss = NULL;
+ }
+ break;
+
+ case 'V': /* sequence of strings + lengths */
+ bv = va_arg( ap, struct berval *** );
+ if ( *bv ) {
+ ber_bvecfree( *bv );
+ *bv = NULL;
+ }
+ break;
+
+#if 0 /* No action for these format characters */
+ case 'n': /* null */
+ case 'x': /* skip the next element - whatever it is */
+ case '{': /* begin sequence */
+ case '[': /* begin set */
+ case '}': /* end sequence */
+ case ']': /* end set */
+#endif
+
+ }
+ }
+
+ va_end( ap );
+ }
+
return( rc );
}
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