OpenCard  
 
OCF, the OpenCard Framework is a standard Java framework for working with Smart Cards.  
 

com.ibm.opencard.isofs
Class MFC35FileSRParser

java.lang.Object
  |
  +--com.ibm.opencard.service.MFC35ObjectSRParser
        |
        +--com.ibm.opencard.isofs.MFC35FileSRParser
public class MFC35FileSRParser
extends MFC35ObjectSRParser

A select response parser for file select commands. This parser decodes the information contained in a typical MFC select response to a file or directory. Unlike the generic class MFC35ObjectSRParser, it does not only decode the access information, but also the file or directory specific information, like file size or structure. It does not decode additional data that is sent when selecting special files like EF_CHV1.
The name of this class, indicating MFC 3.5 support, may be a bit misleading. This parser also recognizes files types that are not supported by this CardOS version, like variable record files. The corresponding codes had been reserved, so there is no compatibility problem.

Version:
$Id: MFC35FileSRParser.java,v 1.1 1999/12/02 16:06:04 damke Exp $

Field Summary
protected static byte FT_EF_ASC
           
protected static byte FT_EF_CYCLIC
           
protected static byte FT_EF_FIXED
           
protected static byte FT_EF_RFU4
           
protected static byte FT_EF_RFU5
           
protected static byte FT_EF_TRANSPARENT
           
protected static byte FT_EF_VARIABLE
           
 
Fields inherited from class com.ibm.opencard.service.MFC35ObjectSRParser
access_parser, FILE_HEADER_TAG, FT_DF_NOASC, FT_DF_WITHASC
 
Constructor Summary
MFC35FileSRParser(MFCAccessParser accpar)
          Creates a new select response parser for file and directory selects.
 
Method Summary
protected  void parseFileHeader(MFCFileInfo info, byte[] header)
          Parse a file header and set up file information accordingly.
 MFCCardObjectInfo parseSelectResponse(byte[] response)
          Interpret a smartcard's response to a select command.
 
Methods inherited from class com.ibm.opencard.service.MFC35ObjectSRParser
parseObjectHeader
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

FT_EF_TRANSPARENT

protected static final byte FT_EF_TRANSPARENT

FT_EF_FIXED

protected static final byte FT_EF_FIXED

FT_EF_VARIABLE

protected static final byte FT_EF_VARIABLE

FT_EF_CYCLIC

protected static final byte FT_EF_CYCLIC

FT_EF_RFU4

protected static final byte FT_EF_RFU4

FT_EF_RFU5

protected static final byte FT_EF_RFU5

FT_EF_ASC

protected static final byte FT_EF_ASC
Constructor Detail

MFC35FileSRParser

public MFC35FileSRParser(MFCAccessParser accpar)
Creates a new select response parser for file and directory selects.
Parameters:
accpar - a parser for access conditions, which are part of the file or directory select response
Method Detail

parseSelectResponse

public MFCCardObjectInfo parseSelectResponse(byte[] response)
                                      throws BadHeaderException
Interpret a smartcard's response to a select command. This method is required in the interface MFCSelectResponseParser. The implementation here parses the access conditions as well as file or directory specific information like the size or file structure.
Parameters:
response - the response data sent by the smartcard
Returns:
the file information gathered from the smartcard's response
Throws:
BadHeaderException - The response could not be parsed correctly.
Overrides:
parseSelectResponse in class MFC35ObjectSRParser

parseFileHeader

protected void parseFileHeader(MFCFileInfo info,
                               byte[] header)
                        throws BadHeaderException
Parse a file header and set up file information accordingly. This method parses only the file part of the information. The generic part must be interpreted before or afterwards, preferrably before. the base class provides the method parseObjectHeader for this purpose.
This method must be invoked exactly once for a particular file info object. Before invocation, the file info is not set up appropriately. It is not possible to reuse a file info object by invoking this method a second time with a different header.
Parameters:
info - the file info to set up
header - the file header obtained from the smartcard
Throws:
BadHeaderException - if the header could not be parsed correctly