[Opensc-commits] [OpenSC/OpenSC] 22eb0f: iso7816_read_binary: do not assume that 6282 is re...

[Martin P. <no...@gi...>]

  Branch: refs/heads/read-binary-empty-response-fix
  Home:   https://github.com/OpenSC/OpenSC
  Commit: 22eb0f5f59e2cddc1716ec111a0b24b7b8626ecb
      https://github.com/OpenSC/OpenSC/commit/22eb0f5f59e2cddc1716ec111a0b24b7b8626ecb
  Author: Martin Paljak <ma...@ma...>
  Date:   2019-03-21 (Thu, 21 Mar 2019)

  Changed paths:
    M src/libopensc/iso7816.c

  Log Message:
  -----------
  iso7816_read_binary: do not assume that 6282 is returned with data

Instead of a double check_sw call in case there is no data, assume
that a SW is properly sent by the card and do not expose
SC_ERROR_FILE_END_REACHED outside of the function
(like sc_pkcs15_read_file)

This is to facilitate Estonian eID 2018+ that instead of properly returning
6282 with trunkated data, 9000 is returned and next READ BINARY returns
6b00 (invalid p1/p2). The change should be generally harmless for well-behaving
cards.

Change-Id: I7511ab4841d3bcdf8d6f4a37a9315ea4ac569b10