El jue, 21-04-2011 a las 10:03 +0200, NdK escribió: > > The problem I have is to read a file with an unknown length. > How is that possible? Aren't file sizes fixed at file creation time? > Have I missed something? > IIUC, when you issue a SELECT_FILE, you can see its size, too. I'm confused.
Sure: any card that uses compressed file (as spanish DNIe does) In our case, FCI file size is useless: I had to implement a sort of file cache, that: - fill cache with consecutive read_binary(max_apdu_recv) + realloc(), until I receive SC_ERROR_WRONG_LENGTH - Then make a last read_binary with proper lenght - check if data is compressed, uncompress if needed - update properly sc_file lenght fields By mean of this artifact, I get read_binary handle compressed files in a transparent way... but I had to implement my own read_binary, to meet these requeriments instead of calling iso_read_binary(), as with current implementation is useless for me, even for filling cache http://forja.cenatic.es/plugins/scmsvn/viewcvs.php/opensc-opendnie/trunk/src/libopensc/card-dnie.c?root=opendnie&view=log Juan antonio _______________________________________________ opensc-devel mailing list opensc-devel@lists.opensc-project.org http://www.opensc-project.org/mailman/listinfo/opensc-devel
