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[PC/SC / MacOSX] Try to connect to the card twice. 

On OS X, when you insert a card, securityd sequentially starts all found Tokend-s to see if a card can be handled with one.
If a non-tokend application waits for a card insertion with sc_wait_for_event and tries to connect to the card right after the system sees it, it will fail with "The reader is in use by another application" 95% of the time.
With this hack connecting to the card succeeds 95% of the time with the probable penalty of an extra second on initialization for non-tokend clients.

This should only affect applications that wait for card insertion events.



git-svn-id: https://www.opensc-project.org/svnp/opensc/trunk@3991 c6295689-39f2-0310-b995-f0e70906c6a9
This commit is contained in:
martin 2010-02-03 15:46:44 +00:00
parent b4a24af66d
commit 314a31f867
1 changed files with 8 additions and 0 deletions
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8
src/libopensc/reader-pcsc.c
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@ -414,6 +414,14 @@ static int pcsc_connect(sc_reader_t *reader)
rv = priv->gpriv->SCardConnect(priv->gpriv->pcsc_ctx, reader->name,
priv->gpriv->connect_exclusive ? SCARD_SHARE_EXCLUSIVE : SCARD_SHARE_SHARED,
SCARD_PROTOCOL_ANY, &card_handle, &active_proto);
#ifdef __APPLE__
if (rv == (LONG)SCARD_E_SHARING_VIOLATION) {
sleep(1); /* Try again to compete with Tokend probes */
rv = priv->gpriv->SCardConnect(priv->gpriv->pcsc_ctx, reader->name,
priv->gpriv->connect_exclusive ? SCARD_SHARE_EXCLUSIVE : SCARD_SHARE_SHARED,
SCARD_PROTOCOL_ANY, &card_handle, &active_proto);
}
#endif
if (rv != SCARD_S_SUCCESS) {
PCSC_TRACE(reader, "SCardConnect failed", rv);
return pcsc_to_opensc_error(rv);