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scd: Add debug option for reader function calls.
* scd/scdaemon.h (DBG_READER_VALUE, DBG_READER): New. * scd/apdu.c (apdu_open_reader, apdu_close_reader) (apdu_shutdown_reader, apdu_connect, apdu_disconnect) (apdu_reset, apdu_get_atr, apdu_get_status): Add debug code. (apdu_activate): Remove this unused function.
This commit is contained in:
Werner Koch
parent
00c760f628
commit
07ea8c56b5
205
scd/apdu.c
205
scd/apdu.c
@ -2772,6 +2772,9 @@ apdu_open_reader (const char *portstr, int *r_no_service)
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static int pcsc_api_loaded, ct_api_loaded;
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int slot;
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if (DBG_READER)
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log_debug ("enter: apdu_open_reader: portstr=%s\n", portstr);
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if (r_no_service)
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*r_no_service = 0;
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@ -2786,6 +2789,8 @@ apdu_open_reader (const char *portstr, int *r_no_service)
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if (slot != -1)
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{
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once_available = 1;
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if (DBG_READER)
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log_debug ("leave: apdu_open_reader => slot=%d [ccid]\n", slot);
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return slot; /* got one */
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}
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@ -2796,14 +2801,22 @@ apdu_open_reader (const char *portstr, int *r_no_service)
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and over again. To reset this flag "gpgconf --kill scdaemon"
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can be used. */
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if (once_available)
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return -1;
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{
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if (DBG_READER)
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log_debug ("leave: apdu_open_reader => slot=-1 (once_avail)\n");
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return -1;
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}
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/* If a CCID reader specification has been given, the user does
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not want a fallback to other drivers. */
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if (portstr)
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for (s=portstr, i=0; *s; s++)
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if (*s == ':' && (++i == 3))
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return -1;
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{
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if (DBG_READER)
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log_debug ("leave: apdu_open_reader => slot=-1 (no ccid)\n");
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return -1;
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}
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}
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#endif /* HAVE_LIBUSB */
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@ -2928,6 +2941,8 @@ apdu_open_reader (const char *portstr, int *r_no_service)
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if (slot == -1 && r_no_service && pcsc_no_service)
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*r_no_service = 1;
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if (DBG_READER)
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log_debug ("leave: apdu_open_reader => slot=%d [pc/sc]\n", slot);
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return slot;
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}
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@ -2982,13 +2997,31 @@ apdu_close_reader (int slot)
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{
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int sw;
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if (DBG_READER)
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log_debug ("enter: apdu_close_reader: slot=%d\n", slot);
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if (slot < 0 || slot >= MAX_READER || !reader_table[slot].used )
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return SW_HOST_NO_DRIVER;
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{
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if (DBG_READER)
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log_debug ("leave: apdu_close_reader => SW_HOST_NO_DRIVER\n");
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return SW_HOST_NO_DRIVER;
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}
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sw = apdu_disconnect (slot);
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if (sw)
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return sw;
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{
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if (DBG_READER)
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log_debug ("leave: apdu_close_reader => 0x%x (apdu_disconnect)\n", sw);
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return sw;
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}
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if (reader_table[slot].close_reader)
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return reader_table[slot].close_reader (slot);
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{
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sw = reader_table[slot].close_reader (slot);
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if (DBG_READER)
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log_debug ("leave: apdu_close_reader => 0x%x (close_reader)\n", sw);
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return sw;
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}
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if (DBG_READER)
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log_debug ("leave: apdu_close_reader => SW_HOST_NOT_SUPPORTED\n");
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return SW_HOST_NOT_SUPPORTED;
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}
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@ -3027,13 +3060,32 @@ apdu_shutdown_reader (int slot)
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{
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int sw;
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if (DBG_READER)
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log_debug ("enter: apdu_shutdown_reader: slot=%d\n", slot);
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if (slot < 0 || slot >= MAX_READER || !reader_table[slot].used )
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return SW_HOST_NO_DRIVER;
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{
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if (DBG_READER)
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log_debug ("leave: apdu_shutdown_reader => SW_HOST_NO_DRIVER\n");
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return SW_HOST_NO_DRIVER;
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}
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sw = apdu_disconnect (slot);
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if (sw)
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return sw;
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{
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if (DBG_READER)
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log_debug ("leave: apdu_shutdown_reader => 0x%x (apdu_disconnect)\n",
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sw);
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return sw;
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}
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if (reader_table[slot].shutdown_reader)
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return reader_table[slot].shutdown_reader (slot);
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{
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sw = reader_table[slot].shutdown_reader (slot);
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if (DBG_READER)
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log_debug ("leave: apdu_shutdown_reader => 0x%x (close_reader)\n", sw);
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return sw;
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}
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if (DBG_READER)
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log_debug ("leave: apdu_shutdown_reader => SW_HOST_NOT_SUPPORTED\n");
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return SW_HOST_NOT_SUPPORTED;
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}
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@ -3060,8 +3112,15 @@ apdu_connect (int slot)
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int sw;
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unsigned int status;
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if (DBG_READER)
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log_debug ("enter: apdu_connect: slot=%d\n", slot);
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if (slot < 0 || slot >= MAX_READER || !reader_table[slot].used )
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return SW_HOST_NO_DRIVER;
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{
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if (DBG_READER)
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log_debug ("leave: apdu_connect => SW_HOST_NO_DRIVER\n");
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return SW_HOST_NO_DRIVER;
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}
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/* Only if the access method provides a connect function we use it.
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If not, we expect that the card has been implicitly connected by
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@ -3092,6 +3151,8 @@ apdu_connect (int slot)
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|| !reader_table[slot].atrlen)
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sw = SW_HOST_CARD_INACTIVE;
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if (DBG_READER)
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log_debug ("leave: apdu_connect => sw=0x%x\n", sw);
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return sw;
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}
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@ -3102,8 +3163,15 @@ apdu_disconnect (int slot)
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{
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int sw;
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if (DBG_READER)
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log_debug ("enter: apdu_disconnect: slot=%d\n", slot);
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if (slot < 0 || slot >= MAX_READER || !reader_table[slot].used )
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return SW_HOST_NO_DRIVER;
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{
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if (DBG_READER)
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log_debug ("leave: apdu_disconnect => SW_HOST_NO_DRIVER\n");
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return SW_HOST_NO_DRIVER;
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}
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if (reader_table[slot].disconnect_card)
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{
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@ -3116,6 +3184,9 @@ apdu_disconnect (int slot)
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}
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else
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sw = 0;
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if (DBG_READER)
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log_debug ("leave: apdu_disconnect => sw=0x%x\n", sw);
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return sw;
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}
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@ -3151,11 +3222,22 @@ apdu_reset (int slot)
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{
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int sw;
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if (DBG_READER)
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log_debug ("enter: apdu_reset: slot=%d\n", slot);
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if (slot < 0 || slot >= MAX_READER || !reader_table[slot].used )
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return SW_HOST_NO_DRIVER;
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{
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if (DBG_READER)
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log_debug ("leave: apdu_reset => SW_HOST_NO_DRIVER\n");
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return SW_HOST_NO_DRIVER;
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}
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if ((sw = lock_slot (slot)))
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return sw;
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{
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if (DBG_READER)
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log_debug ("leave: apdu_reset => sw=0x%x (lock_slot)\n", sw);
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return sw;
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}
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reader_table[slot].last_status = 0;
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if (reader_table[slot].reset_reader)
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@ -3171,73 +3253,47 @@ apdu_reset (int slot)
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}
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unlock_slot (slot);
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if (DBG_READER)
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log_debug ("leave: apdu_reset => sw=0x%x\n", sw);
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return sw;
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}
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/* Activate a card if it has not yet been done. This is a kind of
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reset-if-required. It is useful to test for presence of a card
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before issuing a bunch of apdu commands. It does not wait on a
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locked card. */
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int
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apdu_activate (int slot)
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{
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int sw;
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unsigned int s;
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if (slot < 0 || slot >= MAX_READER || !reader_table[slot].used )
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return SW_HOST_NO_DRIVER;
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if ((sw = trylock_slot (slot)))
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return sw;
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if (reader_table[slot].get_status_reader)
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sw = reader_table[slot].get_status_reader (slot, &s);
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if (!sw)
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{
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if (!(s & 2)) /* Card not present. */
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sw = SW_HOST_NO_CARD;
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else if ( ((s & 2) && !(s & 4))
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|| !reader_table[slot].atrlen )
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{
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/* We don't have an ATR or a card is present though inactive:
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do a reset now. */
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if (reader_table[slot].reset_reader)
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{
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reader_table[slot].last_status = 0;
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sw = reader_table[slot].reset_reader (slot);
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if (!sw)
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{
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/* If we got to here we know that a card is present
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and usable. Thus remember this. */
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reader_table[slot].last_status = (APDU_CARD_USABLE
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| APDU_CARD_PRESENT
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| APDU_CARD_ACTIVE);
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}
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}
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}
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}
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unlock_slot (slot);
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return sw;
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}
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/* Return the ATR or NULL if none is available. On success the length
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of the ATR is stored at ATRLEN. The caller must free the returned
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value. */
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unsigned char *
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apdu_get_atr (int slot, size_t *atrlen)
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{
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unsigned char *buf;
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if (DBG_READER)
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log_debug ("enter: apdu_get_atr: slot=%d\n", slot);
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if (slot < 0 || slot >= MAX_READER || !reader_table[slot].used )
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return NULL;
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{
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if (DBG_READER)
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log_debug ("leave: apdu_get_atr => NULL (bad slot)\n");
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return NULL;
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}
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if (!reader_table[slot].atrlen)
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return NULL;
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{
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if (DBG_READER)
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log_debug ("leave: apdu_get_atr => NULL (no ATR)\n");
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return NULL;
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}
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buf = xtrymalloc (reader_table[slot].atrlen);
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if (!buf)
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return NULL;
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{
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if (DBG_READER)
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log_debug ("leave: apdu_get_atr => NULL (out of core)\n");
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return NULL;
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}
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memcpy (buf, reader_table[slot].atr, reader_table[slot].atrlen);
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*atrlen = reader_table[slot].atrlen;
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if (DBG_READER)
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log_debug ("leave: apdu_get_atr => atrlen=%zu\n", *atrlen);
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return buf;
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}
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@ -3308,7 +3364,26 @@ int
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apdu_get_status (int slot, int hang,
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unsigned int *status, unsigned int *changed)
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{
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return apdu_get_status_internal (slot, hang, 0, status, changed);
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int sw;
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if (DBG_READER)
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log_debug ("enter: apdu_get_status: slot=%d hang=%d\n", slot, hang);
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sw = apdu_get_status_internal (slot, hang, 0, status, changed);
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if (DBG_READER)
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{
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if (status && changed)
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log_debug ("leave: apdu_get_status => sw=0x%x status=%u changecnt=%u\n",
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sw, *status, *changed);
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else if (status)
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log_debug ("leave: apdu_get_status => sw=0x%x status=%u\n",
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sw, *status);
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else if (changed)
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log_debug ("leave: apdu_get_status => sw=0x%x changed=%u\n",
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sw, *changed);
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else
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log_debug ("leave: apdu_get_status => sw=0x%x\n", sw);
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}
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return sw;
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}
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@ -108,7 +108,6 @@ int apdu_disconnect (int slot);
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int apdu_set_progress_cb (int slot, gcry_handler_progress_t cb, void *cb_arg);
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int apdu_activate (int slot);
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int apdu_reset (int slot);
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int apdu_get_status (int slot, int hang,
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unsigned int *status, unsigned int *changed);
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@ -72,8 +72,9 @@ struct
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#define DBG_CACHE_VALUE 64 /* debug the caching */
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#define DBG_MEMSTAT_VALUE 128 /* show memory statistics */
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#define DBG_HASHING_VALUE 512 /* debug hashing operations */
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#define DBG_ASSUAN_VALUE 1024
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#define DBG_ASSUAN_VALUE 1024
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#define DBG_CARD_IO_VALUE 2048
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#define DBG_READER_VALUE 4096 /* Trace reader related functions. */
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#define DBG_COMMAND (opt.debug & DBG_COMMAND_VALUE)
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#define DBG_CRYPTO (opt.debug & DBG_CRYPTO_VALUE)
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@ -82,6 +83,7 @@ struct
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#define DBG_HASHING (opt.debug & DBG_HASHING_VALUE)
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#define DBG_ASSUAN (opt.debug & DBG_ASSUAN_VALUE)
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#define DBG_CARD_IO (opt.debug & DBG_CARD_IO_VALUE)
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#define DBG_READER (opt.debug & DBG_READER_VALUE)
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struct server_local_s;
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struct app_ctx_s;
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