libraries/liblber/decode.c - diff

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Diff for /libraries/liblber/decode.c between versions 1.5.2.4 and 1.21

version 1.5.2.4, 1998/12/31 19:32:05	version 1.21, 1999/05/19 04:13:44
Line 25	Line 25
#include <ac/string.h>	#include <ac/string.h>
#include <ac/socket.h>	#include <ac/socket.h>

#include "lber.h"	#include "lber-int.h"

#ifdef LDAP_DEBUG
int lber_debug;
#endif

static int ber_getnint LDAP_P(( BerElement ber, long num, int len ));	static int ber_getnint LDAP_P(( BerElement ber, long num, int len ));

Line 42 ber_get_tag( BerElement *ber )	Line 38 ber_get_tag( BerElement *ber )
char *tagp;	char *tagp;
unsigned int i;	unsigned int i;

	assert( ber != NULL );

if ( ber_read( ber, (char *) &xbyte, 1 ) != 1 )	if ( ber_read( ber, (char *) &xbyte, 1 ) != 1 )
return( LBER_DEFAULT );	return( LBER_DEFAULT );

Line 76 ber_skip_tag( BerElement *ber, unsigned	Line 74 ber_skip_tag( BerElement *ber, unsigned
int noctets, diff;	int noctets, diff;
unsigned long netlen;	unsigned long netlen;

	assert( ber != NULL );
	assert( len != NULL );

/*	/*
* Any ber element looks like this: tag length contents.	* Any ber element looks like this: tag length contents.
* Assuming everything's ok, we return the tag byte (we	* Assuming everything's ok, we return the tag byte (we
Line 103 ber_skip_tag( BerElement *ber, unsigned	Line 104 ber_skip_tag( BerElement *ber, unsigned
*len = netlen = 0;	*len = netlen = 0;
if ( ber_read( ber, (char *) &lc, 1 ) != 1 )	if ( ber_read( ber, (char *) &lc, 1 ) != 1 )
return( LBER_DEFAULT );	return( LBER_DEFAULT );
if ( lc & 0x80 ) {	if ( lc & 0x80U ) {
noctets = (lc & 0x7f);	noctets = (lc & 0x7fU);
if ( noctets > sizeof(unsigned long) )	if ( (unsigned) noctets > sizeof(unsigned long) )
return( LBER_DEFAULT );	return( LBER_DEFAULT );
diff = sizeof(unsigned long) - noctets;	diff = sizeof(unsigned long) - noctets;
if ( ber_read( ber, (char *) &netlen + diff, noctets )	if ( ber_read( ber, (char *) &netlen + diff, noctets )
Line 120 ber_skip_tag( BerElement *ber, unsigned	Line 121 ber_skip_tag( BerElement *ber, unsigned
}	}

unsigned long	unsigned long
ber_peek_tag( BerElement ber, unsigned long len )	ber_peek_tag(
	LDAP_CONST BerElement ber_in, / not const per c-api-02 */
	unsigned long *len )
{	{
char *save;
unsigned long tag;	unsigned long tag;
	BerElement *ber = ber_dup( ber_in );

	if( ber == NULL ) {
	return LBER_ERROR;
	}

save = ber->ber_ptr;
tag = ber_skip_tag( ber, len );	tag = ber_skip_tag( ber, len );
ber->ber_ptr = save;

	ber_free( ber, 1 );
return( tag );	return( tag );
}	}

Line 139 ber_getnint( BerElement ber, long num,	Line 145 ber_getnint( BerElement ber, long num,
long netnum;	long netnum;
char *p;	char *p;

	assert( ber != NULL );
	assert( num != NULL );

/*	/*
* The tag and length have already been stripped off. We should	* The tag and length have already been stripped off. We should
* be sitting right before len bytes of 2's complement integer,	* be sitting right before len bytes of 2's complement integer,
Line 146 ber_getnint( BerElement ber, long num,	Line 155 ber_getnint( BerElement ber, long num,
* extend after we read it in.	* extend after we read it in.
*/	*/

if ( len > sizeof(long) )	if ( (unsigned) len > sizeof(long) )
return( -1 );	return( -1 );

netnum = 0;	netnum = 0;
Line 158 ber_getnint( BerElement ber, long num,	Line 167 ber_getnint( BerElement ber, long num,
/* sign extend if necessary */	/* sign extend if necessary */
p = (char *) &netnum;	p = (char *) &netnum;
sign = (0x80 & *(p+diff) );	sign = (0x80 & *(p+diff) );
if ( sign && len < sizeof(long) ) {	if ( sign && ((unsigned) len < sizeof(long)) ) {
for ( i = 0; i < diff; i++ ) {	for ( i = 0; i < diff; i++ ) {
*(p+i) = (unsigned char) 0xff;	*(p+i) = (unsigned char) 0xff;
}	}
Line 202 ber_get_stringb( BerElement ber, char	Line 211 ber_get_stringb( BerElement ber, char

#ifdef STR_TRANSLATION	#ifdef STR_TRANSLATION
if ( datalen > 0 && ( ber->ber_options & LBER_TRANSLATE_STRINGS ) != 0	if ( datalen > 0 && ( ber->ber_options & LBER_TRANSLATE_STRINGS ) != 0
&& ber->ber_decode_translate_proc != NULL ) {	&& ber->ber_decode_translate_proc ) {
transbuf = buf;	transbuf = buf;
++datalen;	++datalen;
if ( (*(ber->ber_decode_translate_proc))( &transbuf, &datalen,	if ( (*(ber->ber_decode_translate_proc))( &transbuf, &datalen,
Line 228 ber_get_stringa( BerElement ber, char	Line 237 ber_get_stringa( BerElement ber, char
{	{
unsigned long datalen, tag;	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 );	return( LBER_DEFAULT );
	}

if ( (buf = (char ) malloc( (size_t)datalen + 1 )) == NULL )	if ( (buf = (char ) malloc( (size_t)datalen + 1 )) == NULL )
return( LBER_DEFAULT );	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 );	return( LBER_DEFAULT );
	}
(*buf)[datalen] = '\0';	(*buf)[datalen] = '\0';

#ifdef STR_TRANSLATION	#ifdef STR_TRANSLATION
if ( datalen > 0 && ( ber->ber_options & LBER_TRANSLATE_STRINGS ) != 0	if ( datalen > 0 && ( ber->ber_options & LBER_TRANSLATE_STRINGS ) != 0
&& ber->ber_decode_translate_proc != NULL ) {	&& ber->ber_decode_translate_proc ) {
++datalen;	++datalen;
if ( (*(ber->ber_decode_translate_proc))( buf, &datalen, 1 )	if ( (*(ber->ber_decode_translate_proc))( buf, &datalen, 1 )
!= 0 ) {	!= 0 ) {
free( *buf );	free( *buf );
	*buf = NULL;
return( LBER_DEFAULT );	return( LBER_DEFAULT );
}	}
}	}
Line 258 ber_get_stringal( BerElement *ber, struc	Line 273 ber_get_stringal( BerElement *ber, struc
{	{
unsigned long len, tag;	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 );	return( LBER_DEFAULT );
	}

if ( (tag = ber_skip_tag( ber, &len )) == LBER_DEFAULT )	if ( (bv = (struct berval ) malloc( sizeof(struct berval) )) == NULL )
return( LBER_DEFAULT );	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 );	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 );	return( LBER_DEFAULT );
	}
((*bv)->bv_val)[len] = '\0';	((*bv)->bv_val)[len] = '\0';
(*bv)->bv_len = len;	(*bv)->bv_len = len;

#ifdef STR_TRANSLATION	#ifdef STR_TRANSLATION
if ( len > 0 && ( ber->ber_options & LBER_TRANSLATE_STRINGS ) != 0	if ( len > 0 && ( ber->ber_options & LBER_TRANSLATE_STRINGS ) != 0
&& ber->ber_decode_translate_proc != NULL ) {	&& ber->ber_decode_translate_proc ) {
++len;	++len;
if ( ((ber->ber_decode_translate_proc))( &((bv)->bv_val),	if ( ((ber->ber_decode_translate_proc))( &((bv)->bv_val),
&len, 1 ) != 0 ) {	&len, 1 ) != 0 ) {
free( (*bv)->bv_val );	ber_bvfree( *bv );
	*bv = NULL;
return( LBER_DEFAULT );	return( LBER_DEFAULT );
}	}
(*bv)->bv_len = len - 1;	(*bv)->bv_len = len - 1;
Line 294 ber_get_bitstringa( BerElement *ber, cha	Line 318 ber_get_bitstringa( BerElement *ber, cha
unsigned long datalen, tag;	unsigned long datalen, tag;
unsigned char unusedbits;	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 );	return( LBER_DEFAULT );
	}
--datalen;	--datalen;

if ( (buf = (char ) malloc( (size_t)datalen )) == NULL )	if ( (buf = (char ) malloc( (size_t)datalen )) == NULL )
return( LBER_DEFAULT );	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 );	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 );	return( LBER_DEFAULT );
	}

blen = datalen 8 - unusedbits;	blen = datalen 8 - unusedbits;
return( tag );	return( tag );
Line 342 ber_first_element( BerElement *ber, unsi	Line 374 ber_first_element( BerElement *ber, unsi
{	{
/* skip the sequence header, use the len to mark where to stop */	/* skip the sequence header, use the len to mark where to stop */
if ( ber_skip_tag( ber, len ) == LBER_DEFAULT ) {	if ( ber_skip_tag( ber, len ) == LBER_DEFAULT ) {
	*last = NULL;
return( LBER_DEFAULT );	return( LBER_DEFAULT );
}	}

last = ber->ber_ptr + len;	last = ber->ber_ptr + len;

if ( *last == ber->ber_ptr ) {	if ( *last == ber->ber_ptr ) {
	#ifdef LBER_END_SEQORSET
	return( LBER_END_SEQORSET );
	#else
return( LBER_DEFAULT );	return( LBER_DEFAULT );
	#endif
}	}

return( ber_peek_tag( ber, len ) );	return( ber_peek_tag( ber, len ) );
Line 358 unsigned long	Line 395 unsigned long
ber_next_element( BerElement ber, unsigned long len, char *last )	ber_next_element( BerElement ber, unsigned long len, char *last )
{	{
if ( ber->ber_ptr == last ) {	if ( ber->ber_ptr == last ) {
	#ifdef LBER_END_SEQORSET
	return( LBER_END_SEQORSET );
	#else
return( LBER_DEFAULT );	return( LBER_DEFAULT );
	#endif
}	}

return( ber_peek_tag( ber, len ) );	return( ber_peek_tag( ber, len ) );
Line 368 ber_next_element( BerElement *ber, unsig	Line 409 ber_next_element( BerElement *ber, unsig
unsigned long	unsigned long
ber_scanf	ber_scanf
#if HAVE_STDARG	#if HAVE_STDARG
( BerElement ber, char fmt, ... )	( BerElement *ber,
	LDAP_CONST char *fmt,
	... )
#else	#else
( va_alist )	( va_alist )
va_dcl	va_dcl
Line 379 va_dcl	Line 422 va_dcl
BerElement *ber;	BerElement *ber;
char *fmt;	char *fmt;
#endif	#endif
	LDAP_CONST char *fmt_reset;
char *last;	char *last;
char s, ss, **sss;	char s, ss, **sss;
struct berval *bv, bvp, *bval;	struct berval *bv, bvp, *bval;
Line 386 va_dcl	Line 430 va_dcl
long *l;	long *l;
unsigned long rc, tag, len;	unsigned long rc, tag, len;

	assert( ber != NULL );

#ifdef HAVE_STDARG	#ifdef HAVE_STDARG
va_start( ap, fmt );	va_start( ap, fmt );
#else	#else
Line 394 va_dcl	Line 440 va_dcl
fmt = va_arg( ap, char * );	fmt = va_arg( ap, char * );
#endif	#endif

#ifdef LDAP_DEBUG	assert( ber != NULL );
if ( lber_debug & 64 ) {	assert( fmt != NULL );
fprintf( stderr, "ber_scanf fmt (%s) ber:\n", fmt );
ber_dump( ber, 1 );	fmt_reset = fmt;

	if ( ber->ber_debug ) {
	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 );
}	}
#endif

for ( rc = 0; *fmt && rc != LBER_DEFAULT; fmt++ ) {	for ( rc = 0; *fmt && rc != LBER_DEFAULT; fmt++ ) {
	/* When this is modified, remember to update
	* the error-cleanup code below accordingly. */
switch ( *fmt ) {	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 */	case 'a': /* octet string - allocate storage as needed */
ss = va_arg( ap, char ** );	ss = va_arg( ap, char ** );
rc = ber_get_stringa( ber, ss );	rc = ber_get_stringa( ber, ss );
Line 466 va_dcl	Line 528 va_dcl
*sss = NULL;	*sss = NULL;
j = 0;	j = 0;
for ( tag = ber_first_element( ber, &len, &last );	for ( tag = ber_first_element( ber, &len, &last );
tag != LBER_DEFAULT && rc != LBER_DEFAULT;	tag != LBER_DEFAULT &&
tag = ber_next_element( ber, &len, last ) ) {	#ifdef LBER_END_SEQORSET
	tag != LBER_END_SEQORSET &&
	#endif
	rc != LBER_DEFAULT;
	tag = ber_next_element( ber, &len, last ) )
	{
if ( *sss == NULL ) {	if ( *sss == NULL ) {
sss = (char *) malloc(	sss = (char *) malloc(
2 * sizeof(char *) );	2 * sizeof(char *) );
Line 478 va_dcl	Line 545 va_dcl
rc = ber_get_stringa( ber, &((*sss)[j]) );	rc = ber_get_stringa( ber, &((*sss)[j]) );
j++;	j++;
}	}
	#ifdef LBER_END_SEQORSET
	if (rc != LBER_DEFAULT &&
	tag != LBER_END_SEQORSET )
	{
	rc = LBER_DEFAULT;
	}
	#endif
if ( j > 0 )	if ( j > 0 )
(*sss)[j] = NULL;	(*sss)[j] = NULL;
break;	break;
Line 487 va_dcl	Line 561 va_dcl
*bv = NULL;	*bv = NULL;
j = 0;	j = 0;
for ( tag = ber_first_element( ber, &len, &last );	for ( tag = ber_first_element( ber, &len, &last );
tag != LBER_DEFAULT && rc != LBER_DEFAULT;	tag != LBER_DEFAULT &&
tag = ber_next_element( ber, &len, last ) ) {	#ifdef LBER_END_SEQORSET
	tag != LBER_END_SEQORSET &&
	#endif
	rc != LBER_DEFAULT;
	tag = ber_next_element( ber, &len, last ) )
	{
if ( *bv == NULL ) {	if ( *bv == NULL ) {
bv = (struct berval *) malloc(	bv = (struct berval *) malloc(
2 * sizeof(struct berval *) );	2 * sizeof(struct berval *) );
Line 499 va_dcl	Line 578 va_dcl
rc = ber_get_stringal( ber, &((*bv)[j]) );	rc = ber_get_stringal( ber, &((*bv)[j]) );
j++;	j++;
}	}
	#ifdef LBER_END_SEQORSET
	if (rc != LBER_DEFAULT &&
	tag != LBER_END_SEQORSET )
	{
	rc = LBER_DEFAULT;
	}
	#endif
if ( j > 0 )	if ( j > 0 )
(*bv)[j] = NULL;	(*bv)[j] = NULL;
break;	break;
Line 520 va_dcl	Line 606 va_dcl
break;	break;

default:	default:
#ifdef LDAP_LIBUI	if( ber->ber_debug ) {
fprintf( stderr, "unknown fmt %c\n", *fmt );	ber_log_printf( LDAP_DEBUG_ANY, ber->ber_debug,
#endif /* LDAP_LIBUI */	"ber_scanf: unknown fmt %c\n", *fmt );
	}
rc = LBER_DEFAULT;	rc = LBER_DEFAULT;
break;	break;
}	}
Line 530 va_dcl	Line 617 va_dcl

va_end( ap );	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 '!': { /* 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 */
	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] );
	(*sss)[j] = NULL;
	}
	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 );	return( rc );
}	}

void	void
ber_bvfree( struct berval *bv )	ber_bvfree( struct berval *bv )
{	{
	assert(bv != NULL); /* bv damn better point to something */

if ( bv->bv_val != NULL )	if ( bv->bv_val != NULL )
free( bv->bv_val );	free( bv->bv_val );
free( (char *) bv );	free( (char *) bv );
Line 546 ber_bvecfree( struct berval **bv )	Line 744 ber_bvecfree( struct berval **bv )
{	{
int i;	int i;

	assert(bv != NULL); /* bv damn better point to something */

for ( i = 0; bv[i] != NULL; i++ )	for ( i = 0; bv[i] != NULL; i++ )
ber_bvfree( bv[i] );	ber_bvfree( bv[i] );
free( (char *) bv );	free( (char *) bv );
}	}

struct berval *	struct berval *
ber_bvdup( struct berval *bv )	ber_bvdup(
	LDAP_CONST struct berval *bv )
{	{
struct berval *new;	struct berval *new;

	assert( bv != NULL );

	if( bv == NULL ) {
	return NULL;
	}

if ( (new = (struct berval *) malloc( sizeof(struct berval) ))	if ( (new = (struct berval *) malloc( sizeof(struct berval) ))
== NULL ) {	== NULL ) {
return( NULL );	return( NULL );
}	}

	if ( bv->bv_val == NULL ) {
	new->bv_val = NULL;
	new->bv_len = 0;
	return ( new );
	}

if ( (new->bv_val = (char *) malloc( bv->bv_len + 1 )) == NULL ) {	if ( (new->bv_val = (char *) malloc( bv->bv_len + 1 )) == NULL ) {
	free( new );
return( NULL );	return( NULL );
}	}

SAFEMEMCPY( new->bv_val, bv->bv_val, (size_t) bv->bv_len );	SAFEMEMCPY( new->bv_val, bv->bv_val, (size_t) bv->bv_len );
new->bv_val[bv->bv_len] = '\0';	new->bv_val[bv->bv_len] = '\0';
new->bv_len = bv->bv_len;	new->bv_len = bv->bv_len;
Line 576 void	Line 792 void
ber_set_string_translators( BerElement *ber, BERTranslateProc encode_proc,	ber_set_string_translators( BerElement *ber, BERTranslateProc encode_proc,
BERTranslateProc decode_proc )	BERTranslateProc decode_proc )
{	{
	assert( ber != NULL );

ber->ber_encode_translate_proc = encode_proc;	ber->ber_encode_translate_proc = encode_proc;
ber->ber_decode_translate_proc = decode_proc;	ber->ber_decode_translate_proc = decode_proc;
}	}

Removed from v.1.5.2.4
changed lines
	Added in v.1.21