int readDN( INOUT STREAM *stream,
OUT_PTR_COND DN_PTR **dnComponentListPtrPtr )
{
DN_COMPONENT *dnComponentListPtr = NULL;
int length, iterationCount, status;
assert( isWritePtr( stream, sizeof( STREAM ) ) );
assert( isWritePtr( dnComponentListPtrPtr, sizeof( DN_COMPONENT * ) ) );
/* Clear return value */
*dnComponentListPtrPtr = NULL;
/* Read the encoded DN into the local copy of the DN (in other words
into the dnComponentListPtr, not the externally-visible
dnComponentListPtrPtr) */
status = readSequenceZ( stream, &length );
if( cryptStatusError( status ) )
return( status );
if( length <= 0 )
{
/* Some buggy certificates include zero-length DNs, which we skip */
return( CRYPT_OK );
}
for( iterationCount = 0;
length > 0 && iterationCount < FAILSAFE_ITERATIONS_MED;
iterationCount++ )
{
const int startPos = stell( stream );
REQUIRES( startPos > 0 && startPos < MAX_INTLENGTH_SHORT );
status = readDNComponent( stream, &dnComponentListPtr );
if( cryptStatusError( status ) )
break;
length -= stell( stream ) - startPos;
}
if( cryptStatusError( status ) || \
length < 0 || iterationCount >= FAILSAFE_ITERATIONS_MED )
{
/* Delete the local copy of the DN read so far if necessary */
if( dnComponentListPtr != NULL )
deleteDN( ( DN_PTR ** ) &dnComponentListPtr );
return( cryptStatusError( status ) ? status : CRYPT_ERROR_BADDATA );
}
/* Copy the local copy of the DN back to the caller */
*dnComponentListPtrPtr = dnComponentListPtr;
return( CRYPT_OK );
}
int deleteCertComponent( INOUT CERT_INFO *certInfoPtr,
IN_ATTRIBUTE const CRYPT_ATTRIBUTE_TYPE certInfoType )
{
int status;
assert( isWritePtr( certInfoPtr, sizeof( CERT_INFO ) ) );
REQUIRES( isAttribute( certInfoType ) || \
isInternalAttribute( certInfoType ) );
/* If it's a GeneralName or DN component, delete it. These are
special-case attribute values so they have to come before the
general attribute-handling code */
if( isGeneralNameSelectionComponent( certInfoType ) )
{
/* Check whether this GeneralName is present */
status = selectGeneralName( certInfoPtr, certInfoType,
MUST_BE_PRESENT );
if( cryptStatusError( status ) )
return( status );
/* Delete each field in the GeneralName */
if( deleteCompositeAttributeField( &certInfoPtr->attributes,
&certInfoPtr->attributeCursor, certInfoPtr->attributeCursor,
certInfoPtr->currentSelection.dnPtr ) == OK_SPECIAL )
{
/* We've deleted the attribute containing the currently selected
DN, deselect it */
certInfoPtr->currentSelection.dnPtr = NULL;
}
return( CRYPT_OK );
}
if( isGeneralNameComponent( certInfoType ) )
{
SELECTION_STATE selectionState;
ATTRIBUTE_PTR *attributePtr = DUMMY_INIT_PTR;
/* Find the requested GeneralName component. Since
selectGeneralNameComponent() changes the current selection within
the GeneralName, we save the selection state around the call */
saveSelectionState( selectionState, certInfoPtr );
status = selectGeneralNameComponent( certInfoPtr, certInfoType );
if( cryptStatusOK( status ) )
attributePtr = certInfoPtr->attributeCursor;
restoreSelectionState( selectionState, certInfoPtr );
if( cryptStatusError( status ))
return( status );
ENSURES( attributePtr != NULL );
/* Delete the field within the GeneralName */
if( deleteAttributeField( &certInfoPtr->attributes,
&certInfoPtr->attributeCursor, attributePtr,
certInfoPtr->currentSelection.dnPtr ) == OK_SPECIAL )
{
/* We've deleted the attribute containing the currently selected
DN, deselect it */
certInfoPtr->currentSelection.dnPtr = NULL;
}
return( CRYPT_OK );
}
if( isDNComponent( certInfoType ) )
{
status = selectDN( certInfoPtr, CRYPT_ATTRIBUTE_NONE,
MUST_BE_PRESENT );
if( cryptStatusOK( status ) )
status = deleteDNComponent( certInfoPtr->currentSelection.dnPtr,
certInfoType, NULL, 0 );
return( status );
}
/* If it's standard certificate or CMS attribute, delete it */
if( ( certInfoType >= CRYPT_CERTINFO_FIRST_EXTENSION && \
certInfoType <= CRYPT_CERTINFO_LAST_EXTENSION ) || \
( certInfoType >= CRYPT_CERTINFO_FIRST_CMS && \
certInfoType <= CRYPT_CERTINFO_LAST_CMS ) )
return( deleteCertAttribute( certInfoPtr, certInfoType ) );
/* If it's anything else, handle it specially */
switch( certInfoType )
{
case CRYPT_CERTINFO_SELFSIGNED:
if( !( certInfoPtr->flags & CERT_FLAG_SELFSIGNED ) )
return( CRYPT_ERROR_NOTFOUND );
certInfoPtr->flags &= ~CERT_FLAG_SELFSIGNED;
return( CRYPT_OK );
case CRYPT_CERTINFO_CURRENT_CERTIFICATE:
case CRYPT_ATTRIBUTE_CURRENT_GROUP:
case CRYPT_ATTRIBUTE_CURRENT:
case CRYPT_ATTRIBUTE_CURRENT_INSTANCE:
if( certInfoPtr->attributeCursor == NULL )
return( CRYPT_ERROR_NOTFOUND );
if( certInfoType == CRYPT_ATTRIBUTE_CURRENT_GROUP )
{
status = deleteAttribute( &certInfoPtr->attributes,
&certInfoPtr->attributeCursor,
certInfoPtr->attributeCursor,
certInfoPtr->currentSelection.dnPtr );
}
else
{
/* The current component and field are essentially the
same thing since a component is one of a set of
entries in a multivalued field, thus they're handled
identically */
status = deleteAttributeField( &certInfoPtr->attributes,
&certInfoPtr->attributeCursor,
certInfoPtr->attributeCursor,
certInfoPtr->currentSelection.dnPtr );
}
if( status == OK_SPECIAL )
{
/* We've deleted the attribute containing the currently
selected DN, deselect it */
certInfoPtr->currentSelection.dnPtr = NULL;
}
return( CRYPT_OK );
case CRYPT_CERTINFO_TRUSTED_USAGE:
if( certInfoPtr->cCertCert->trustedUsage == CRYPT_ERROR )
return( CRYPT_ERROR_NOTFOUND );
certInfoPtr->cCertCert->trustedUsage = CRYPT_ERROR;
return( CRYPT_OK );
case CRYPT_CERTINFO_TRUSTED_IMPLICIT:
return( krnlSendMessage( certInfoPtr->ownerHandle,
IMESSAGE_USER_TRUSTMGMT,
&certInfoPtr->objectHandle,
MESSAGE_TRUSTMGMT_DELETE ) );
case CRYPT_CERTINFO_VALIDFROM:
case CRYPT_CERTINFO_THISUPDATE:
if( certInfoPtr->startTime <= 0 )
return( CRYPT_ERROR_NOTFOUND );
certInfoPtr->startTime = 0;
return( CRYPT_OK );
case CRYPT_CERTINFO_VALIDTO:
case CRYPT_CERTINFO_NEXTUPDATE:
if( certInfoPtr->endTime <= 0 )
return( CRYPT_ERROR_NOTFOUND );
certInfoPtr->endTime = 0;
return( CRYPT_OK );
case CRYPT_CERTINFO_SUBJECTNAME:
if( certInfoPtr->currentSelection.dnPtr == &certInfoPtr->subjectName )
{
/* This is the currently selected DN, deselect it before
deleting it */
certInfoPtr->currentSelection.dnPtr = NULL;
}
deleteDN( &certInfoPtr->subjectName );
return( CRYPT_OK );
#ifdef USE_CERTREV
case CRYPT_CERTINFO_REVOCATIONDATE:
{
time_t *revocationTimePtr = ( time_t * ) \
getRevocationTimePtr( certInfoPtr );
if( revocationTimePtr == NULL )
return( CRYPT_ERROR_NOTFOUND );
*revocationTimePtr = 0;
return( CRYPT_OK );
}
#endif /* USE_CERTREV */
#ifdef USE_PKIUSER
case CRYPT_CERTINFO_PKIUSER_RA:
if( !certInfoPtr->cCertUser->isRA )
return( CRYPT_ERROR_NOTFOUND );
certInfoPtr->cCertUser->isRA = FALSE;
return( CRYPT_OK );
#endif /* USE_PKIUSER */
}
retIntError();
}
