From 3acb3d8e6033f757b68f9500a6cc87b8e51ba39e Mon Sep 17 00:00:00 2001
From: Martin Paljak <martin@martinpaljak.net>
Date: Wed, 5 Feb 2014 08:48:38 +0000
Subject: [PATCH] Default driver: do not send possibly arbitrary APDU-s to an
 unknown card.

---
 src/libopensc/card-default.c | 68 ------------------------------------
 1 file changed, 68 deletions(-)

diff --git a/src/libopensc/card-default.c b/src/libopensc/card-default.c
index 78c5967b..b07462d1 100644
--- a/src/libopensc/card-default.c
+++ b/src/libopensc/card-default.c
@@ -39,69 +39,6 @@ default_match_card(struct sc_card *card)
 	return 1;		/* always match */
 }
 
-
-static int
-autodetect_class(struct sc_card *card)
-{
-	struct sc_context *ctx = card->ctx;
-	int classes[] = { 0x00, 0xC0, 0xB0, 0xA0 };
-	int class_count = sizeof(classes)/sizeof(int);
-	unsigned char rbuf[SC_MAX_APDU_BUFFER_SIZE];
-	struct sc_apdu apdu;
-	int i, r;
-
-	LOG_FUNC_CALLED(ctx);
-
-	for (i = 0; i < class_count; i++) {
-		sc_log(ctx, "trying with 0x%02X", classes[i]);
-
-		memset(&apdu, 0, sizeof(apdu));
-		apdu.cla = classes[i];
-		apdu.cse = SC_APDU_CASE_2_SHORT;
-		apdu.ins = 0xC0;
-		apdu.p1 = apdu.p2 = 0;
-		apdu.datalen = 0;
-		apdu.lc = 0;
-		apdu.le = 256;
-		apdu.resp = rbuf;
-		apdu.resplen = sizeof(rbuf);
-		r = sc_transmit_apdu(card, &apdu);
-		LOG_TEST_RET(ctx, r, "APDU transmit failed");
-
-		if (apdu.sw1 == 0x6E)
-			continue;
-		if (apdu.sw1 == 0x90 && apdu.sw2 == 0x00)
-			break;
-		if (apdu.sw1 == 0x61)
-			break;
-
-		sc_log(ctx, "got strange SWs: 0x%02X 0x%02X", apdu.sw1, apdu.sw2);
-		break;
-	}
-
-	if (i == class_count)
-		LOG_FUNC_RETURN(ctx, SC_ERROR_CLASS_NOT_SUPPORTED);
-
-	card->cla = classes[i];
-	sc_log(ctx, "detected CLA byte as 0x%02X", card->cla);
-	if (apdu.resplen < 2) {
-		sc_log(ctx, "SELECT FILE returned %d bytes", apdu.resplen);
-	}
-	else if (rbuf[0] == 0x6F) {
-		sc_log(ctx, "SELECT FILE seems to behave according to ISO 7816-4\n");
-	}
-	else if (rbuf[0] == 0x00 && rbuf[1] == 0x00) {
-		struct sc_card_driver *drv;
-		sc_log(ctx, "SELECT FILE seems to return Schlumberger 'flex stuff");
-
-		drv = sc_get_cryptoflex_driver();
-		card->ops->select_file = drv->ops->select_file;
-	}
-
-	LOG_FUNC_RETURN(ctx, SC_SUCCESS);
-}
-
-
 static int
 default_init(struct sc_card *card)
 {
@@ -111,11 +48,6 @@ default_init(struct sc_card *card)
 
 	card->name = "Unsupported card";
 	card->drv_data = NULL;
-	r = autodetect_class(card);
-	if (r) {
-		sc_log(card->ctx, "unable to determine the right class byte");
-		LOG_FUNC_RETURN(card->ctx, SC_ERROR_INVALID_CARD);
-	}
 
 	LOG_FUNC_RETURN(card->ctx, SC_SUCCESS);
 }