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scd: New option --pcsc-shared.

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* scd/scdaemon.h (opt): Add field opcsc_shared.
* scd/scdaemon.c (opcscShared): New.
(opts): Add "--pcsc-shared".
(main): Set flag.
* scd/apdu.c (connect_pcsc_card): Use it.
(pcsc_get_status): Take flag in account.
* scd/app-openpgp.c (cache_pin): Bypass in shared mode.
(verify_chv2: Do not auto verify chv1 in shared mode.
* scd/app-piv.c (cache_pin): By pass caceh in shared mode.
--

This option should in general not be used.  The patch tries to limit
bad effects but using shared mode is somewhat dangerous depending on
the other PC/SC users.
This commit is contained in:
Werner Koch 2021-03-12 09:21:57 +01:00
parent 95156ef9bf
commit 5732e7a8e9
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GPG key ID: E3FDFF218E45B72B
6 changed files with 23 additions and 4 deletions
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scd/scdaemon.h
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@ -62,6 +62,7 @@ struct
int enable_pinpad_varlen; /* Use variable length input for pinpad. */
int allow_admin; /* Allow the use of admin commands for certain
cards. */
int pcsc_shared; /* Use shared PC/SC access. */
strlist_t disabled_applications; /* Card applications we do not
want to use. */
unsigned long card_timeout; /* Disconnect after N seconds of inactivity. */