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pcsc: a change in ATR will not always mean a changed card, rely on PC/SC layer for card change information. 

One of the few cards that has two different ATR-s is the EstonianEid card. The changing ATR (especially if
it has different protocol information and historical bytes) can cause confusion in many places, like
Microsoft BaseCSP or certain versions of pcsc-lite.

git-svn-id: https://www.opensc-project.org/svnp/opensc/trunk@4890 c6295689-39f2-0310-b995-f0e70906c6a9
This commit is contained in:
martin 2010-11-29 13:35:06 +00:00
parent 6fc7e62f20
commit 77c8cfc37d
1 changed files with 1 additions and 2 deletions
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3
src/libopensc/reader-pcsc.c
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@ -305,11 +305,10 @@ static int refresh_attributes(sc_reader_t *reader)
if (priv->reader_state.cbAtr > SC_MAX_ATR_SIZE)
return SC_ERROR_INTERNAL;
/* ATR changes => card changed */
/* Some cards have a different cold (after a powerup) and warm (after a reset) ATR */
if (memcmp(priv->reader_state.rgbAtr, reader->atr, priv->reader_state.cbAtr) != 0) {
reader->atr_len = priv->reader_state.cbAtr;
memcpy(reader->atr, priv->reader_state.rgbAtr, reader->atr_len);
reader->flags |= SC_READER_CARD_CHANGED;
}
if (old_flags & SC_READER_CARD_PRESENT) {