com.ibm.opencard.service
Class MFC35ObjectSRParser
java.lang.Object
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+--com.ibm.opencard.service.MFC35ObjectSRParser
- Direct Known Subclasses:
- MFC35FileSRParser
- public class MFC35ObjectSRParser
- extends java.lang.Object
- implements MFCSelectResponseParser
A select response parser for generic select commands.
This parser decodes the access information contained in a typical
MFC select response to a file or directory. It also determines
whether the object is an elementary file or a directory. It does
not parse any additional file or directory information.
This class is rather a sample implementation of the interface
MFCSelectResponseParser than useful in itself. Typically,
the object info will be extended to include file or key information.
An appropriate select response parse will be required, which may
look very much like this one, or may even extend this one.
- Version:
- $Id: MFC35ObjectSRParser.java,v 1.1 1999/12/02 16:06:06 damke Exp $
| Methods inherited from class java.lang.Object |
clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait |
FILE_HEADER_TAG
protected static final byte FILE_HEADER_TAG
- The standard ASN.1 tag for a MFC file header.
FT_DF_NOASC
protected static final byte FT_DF_NOASC
- The file type DF without ASC execution.
FT_DF_WITHASC
protected static final byte FT_DF_WITHASC
- The file type DF with ASC execution.
access_parser
protected MFCAccessParser access_parser
- The underlying parser for access conditions.
MFC35ObjectSRParser
public MFC35ObjectSRParser(MFCAccessParser accpar)
- Instantiates a generic select response parser for MFC 3.5 and above.
- Parameters:
accpar - the parser for access information
parseSelectResponse
public MFCCardObjectInfo parseSelectResponse(byte[] response)
throws BadHeaderException
- Interprets a smartcard's response to a select command.
This method is required in the interface MFCSelectResponseParser.
The implementation here just parses the access information encoded in
a standard MFC select response and checks whether a dedicated file was
selected.
- Specified by:
- parseSelectResponse in interface MFCSelectResponseParser
- Parameters:
response - the response data sent by the smartcard- Returns:
- the generic information gathered from the smartcard's response
- Throws:
- BadHeaderException - the response could not be parsed correctly
parseObjectHeader
protected void parseObjectHeader(MFCCardObjectInfo info,
byte[] header)
throws BadHeaderException
- Parses an object header and sets up information accordingly.
Actually, all objects on a MFC smartcard are files. The term object
is used since only part of the file header information is evaluated
here.
This method must be invoked exactly once for a particular
object (or derived) info. Before the invocation, the information
is not set up appropriately. It is not possible to re-use object
information by invoking this method a second time with a different
header.
- Parameters:
info - the information object to initializeheader - the information in an encoded form- Throws:
- BadHeaderException - the header could not be parsed
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