added connector backend for virtual smart card

pcsc-relay/src/vpcd-driver.c

@@ -0,0 +1,119 @@
+/*
+ * Copyright (C) 2012 Frank Morgner
+ *
+ * This file is part of pcsc-relay.
+ *
+ * pcsc-relay is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version.
+ *
+ * pcsc-relay is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * pcsc-relay.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "pcsc-relay.h"
+#include "vpcd.h"
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+
+
+unsigned int vpcdport = VPCDPORT;
+
+
+static int vpcd_connect(driver_data_t **driver_data)
+{
+    int vicc_found = 0;
+
+
+    if (vicc_init(vpcdport) < 0) {
+        RELAY_ERROR("Could not initialize connection to virtual ICC\n");
+        return 0;
+    }
+    INFO("Waiting for virtual ICC on port %hu\n",
+            (unsigned short) vpcdport);
+
+
+    do {
+        switch (vicc_present()) {
+            case 0:
+                /* not present */
+                sleep(1);
+                break;
+            case 1:
+                vicc_found = 1;
+                break;
+            default:
+                RELAY_ERROR("Could not get ICC state\n");
+                return 0;
+        }
+    } while (!vicc_found);
+
+
+    if (vicc_poweron() < 0) {
+        RELAY_ERROR("could not powerup\n");
+        return 0;
+    }
+
+    INFO("Connected to virtual ICC\n");
+
+
+    return 1;
+}
+
+static int vpcd_disconnect(driver_data_t *driver_data)
+{
+    if (vicc_eject() != 0)
+        DEBUG("Could not eject virtual ICC\n");
+
+    if (vicc_exit() != 0) {
+        RELAY_ERROR("Could not close connection to virtual ICC\n");
+        return 0;
+    }
+
+    return 1;
+}
+
+static int vpcd_transmit(driver_data_t *driver_data,
+        const unsigned char *send, size_t send_len,
+        unsigned char *recv, size_t *recv_len)
+{
+    char *rapdu;
+    int size = vicc_transmit(send_len, (char *) send, &rapdu);
+
+    if (size < 0) {
+        RELAY_ERROR("could not send apdu or receive rapdu\n");
+        *recv_len = 0;
+        return 0;
+    }
+
+    if (*recv_len < size) {
+        RELAY_ERROR("Not enough memory for rapdu\n");
+        *recv_len = 0;
+        free(rapdu);
+        return 0;
+    }
+
+    *recv_len = size;
+    memcpy(recv, rapdu, size);
+    free(rapdu);
+
+    return 1;
+}
+
+
+struct sc_driver driver_vpcd = {
+    .connect = vpcd_connect,
+    .disconnect = vpcd_disconnect,
+    .transmit = vpcd_transmit,
+};