X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=qemu%2Flibcacard%2Fvreader.c;fp=qemu%2Flibcacard%2Fvreader.c;h=9725f46a743e8f70bd15d6fcc0f9896a795b68f2;hb=e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb;hp=0000000000000000000000000000000000000000;hpb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;p=kvmfornfv.git

diff --git a/qemu/libcacard/vreader.c b/qemu/libcacard/vreader.c
new file mode 100644
index 000000000..9725f46a7
--- /dev/null
+++ b/qemu/libcacard/vreader.c
@@ -0,0 +1,578 @@
+/*
+ * emulate the reader
+ *
+ * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
+ * See the COPYING.LIB file in the top-level directory.
+ */
+
+#ifdef G_LOG_DOMAIN
+#undef G_LOG_DOMAIN
+#endif
+#define G_LOG_DOMAIN "libcacard"
+
+#include "glib-compat.h"
+
+#include <string.h>
+
+#include "vcard.h"
+#include "vcard_emul.h"
+#include "card_7816.h"
+#include "vreader.h"
+#include "vevent.h"
+#include "cac.h" /* just for debugging defines */
+
+#define LIBCACARD_LOG_DOMAIN "libcacard"
+
+struct VReaderStruct {
+    int    reference_count;
+    VCard *card;
+    char *name;
+    vreader_id_t id;
+    CompatGMutex lock;
+    VReaderEmul  *reader_private;
+    VReaderEmulFree reader_private_free;
+};
+
+/*
+ * Debug helpers
+ */
+
+static const char *
+apdu_ins_to_string(int ins)
+{
+    switch (ins) {
+    case VCARD7816_INS_MANAGE_CHANNEL:
+        return "manage channel";
+    case VCARD7816_INS_EXTERNAL_AUTHENTICATE:
+        return "external authenticate";
+    case VCARD7816_INS_GET_CHALLENGE:
+        return "get challenge";
+    case VCARD7816_INS_INTERNAL_AUTHENTICATE:
+        return "internal authenticate";
+    case VCARD7816_INS_ERASE_BINARY:
+        return "erase binary";
+    case VCARD7816_INS_READ_BINARY:
+        return "read binary";
+    case VCARD7816_INS_WRITE_BINARY:
+        return "write binary";
+    case VCARD7816_INS_UPDATE_BINARY:
+        return "update binary";
+    case VCARD7816_INS_READ_RECORD:
+        return "read record";
+    case VCARD7816_INS_WRITE_RECORD:
+        return "write record";
+    case VCARD7816_INS_UPDATE_RECORD:
+        return "update record";
+    case VCARD7816_INS_APPEND_RECORD:
+        return "append record";
+    case VCARD7816_INS_ENVELOPE:
+        return "envelope";
+    case VCARD7816_INS_PUT_DATA:
+        return "put data";
+    case VCARD7816_INS_GET_DATA:
+        return "get data";
+    case VCARD7816_INS_SELECT_FILE:
+        return "select file";
+    case VCARD7816_INS_VERIFY:
+        return "verify";
+    case VCARD7816_INS_GET_RESPONSE:
+        return "get response";
+    case CAC_GET_PROPERTIES:
+        return "get properties";
+    case CAC_GET_ACR:
+        return "get acr";
+    case CAC_READ_BUFFER:
+        return "read buffer";
+    case CAC_UPDATE_BUFFER:
+        return "update buffer";
+    case CAC_SIGN_DECRYPT:
+        return "sign decrypt";
+    case CAC_GET_CERTIFICATE:
+        return "get certificate";
+    }
+    return "unknown";
+}
+
+/* manage locking */
+static inline void
+vreader_lock(VReader *reader)
+{
+    g_mutex_lock(&reader->lock);
+}
+
+static inline void
+vreader_unlock(VReader *reader)
+{
+    g_mutex_unlock(&reader->lock);
+}
+
+/*
+ * vreader constructor
+ */
+VReader *
+vreader_new(const char *name, VReaderEmul *private,
+            VReaderEmulFree private_free)
+{
+    VReader *reader;
+
+    reader = g_new(VReader, 1);
+    g_mutex_init(&reader->lock);
+    reader->reference_count = 1;
+    reader->name = g_strdup(name);
+    reader->card = NULL;
+    reader->id = (vreader_id_t)-1;
+    reader->reader_private = private;
+    reader->reader_private_free = private_free;
+    return reader;
+}
+
+/* get a reference */
+VReader*
+vreader_reference(VReader *reader)
+{
+    if (reader == NULL) {
+        return NULL;
+    }
+    vreader_lock(reader);
+    reader->reference_count++;
+    vreader_unlock(reader);
+    return reader;
+}
+
+/* free a reference */
+void
+vreader_free(VReader *reader)
+{
+    if (reader == NULL) {
+        return;
+    }
+    vreader_lock(reader);
+    if (reader->reference_count-- > 1) {
+        vreader_unlock(reader);
+        return;
+    }
+    vreader_unlock(reader);
+    g_mutex_clear(&reader->lock);
+    if (reader->card) {
+        vcard_free(reader->card);
+    }
+    g_free(reader->name);
+    if (reader->reader_private_free) {
+        reader->reader_private_free(reader->reader_private);
+    }
+    g_free(reader);
+}
+
+static VCard *
+vreader_get_card(VReader *reader)
+{
+    VCard *card;
+
+    vreader_lock(reader);
+    card = vcard_reference(reader->card);
+    vreader_unlock(reader);
+    return card;
+}
+
+VReaderStatus
+vreader_card_is_present(VReader *reader)
+{
+    VCard *card = vreader_get_card(reader);
+
+    if (card == NULL) {
+        return VREADER_NO_CARD;
+    }
+    vcard_free(card);
+    return VREADER_OK;
+}
+
+vreader_id_t
+vreader_get_id(VReader *reader)
+{
+    if (reader == NULL) {
+        return (vreader_id_t)-1;
+    }
+    return reader->id;
+}
+
+VReaderStatus
+vreader_set_id(VReader *reader, vreader_id_t id)
+{
+    if (reader == NULL) {
+        return VREADER_NO_CARD;
+    }
+    reader->id = id;
+    return VREADER_OK;
+}
+
+const char *
+vreader_get_name(VReader *reader)
+{
+    if (reader == NULL) {
+        return NULL;
+    }
+    return reader->name;
+}
+
+VReaderEmul *
+vreader_get_private(VReader *reader)
+{
+    return reader->reader_private;
+}
+
+static VReaderStatus
+vreader_reset(VReader *reader, VCardPower power, unsigned char *atr, int *len)
+{
+    VCard *card = vreader_get_card(reader);
+
+    if (card == NULL) {
+        return VREADER_NO_CARD;
+    }
+    /*
+     * clean up our state
+     */
+    vcard_reset(card, power);
+    if (atr) {
+        vcard_get_atr(card, atr, len);
+    }
+    vcard_free(card); /* free our reference */
+    return VREADER_OK;
+}
+
+VReaderStatus
+vreader_power_on(VReader *reader, unsigned char *atr, int *len)
+{
+    return vreader_reset(reader, VCARD_POWER_ON, atr, len);
+}
+
+VReaderStatus
+vreader_power_off(VReader *reader)
+{
+    return vreader_reset(reader, VCARD_POWER_OFF, NULL, 0);
+}
+
+
+VReaderStatus
+vreader_xfr_bytes(VReader *reader,
+                  unsigned char *send_buf, int send_buf_len,
+                  unsigned char *receive_buf, int *receive_buf_len)
+{
+    VCardAPDU *apdu;
+    VCardResponse *response = NULL;
+    VCardStatus card_status;
+    unsigned short status;
+    VCard *card = vreader_get_card(reader);
+
+    if (card == NULL) {
+        return VREADER_NO_CARD;
+    }
+
+    apdu = vcard_apdu_new(send_buf, send_buf_len, &status);
+    if (apdu == NULL) {
+        response = vcard_make_response(status);
+        card_status = VCARD_DONE;
+    } else {
+        g_debug("%s: CLS=0x%x,INS=0x%x,P1=0x%x,P2=0x%x,Lc=%d,Le=%d %s",
+              __func__, apdu->a_cla, apdu->a_ins, apdu->a_p1, apdu->a_p2,
+              apdu->a_Lc, apdu->a_Le, apdu_ins_to_string(apdu->a_ins));
+        card_status = vcard_process_apdu(card, apdu, &response);
+        if (response) {
+            g_debug("%s: status=%d sw1=0x%x sw2=0x%x len=%d (total=%d)",
+                  __func__, response->b_status, response->b_sw1,
+                  response->b_sw2, response->b_len, response->b_total_len);
+        }
+    }
+    assert(card_status == VCARD_DONE && response);
+    int size = MIN(*receive_buf_len, response->b_total_len);
+    memcpy(receive_buf, response->b_data, size);
+    *receive_buf_len = size;
+    vcard_response_delete(response);
+    vcard_apdu_delete(apdu);
+    vcard_free(card); /* free our reference */
+    return VREADER_OK;
+}
+
+struct VReaderListStruct {
+    VReaderListEntry *head;
+    VReaderListEntry *tail;
+};
+
+struct VReaderListEntryStruct {
+    VReaderListEntry *next;
+    VReaderListEntry *prev;
+    VReader *reader;
+};
+
+
+static VReaderListEntry *
+vreader_list_entry_new(VReader *reader)
+{
+    VReaderListEntry *new_reader_list_entry;
+
+    new_reader_list_entry = g_new0(VReaderListEntry, 1);
+    new_reader_list_entry->reader = vreader_reference(reader);
+    return new_reader_list_entry;
+}
+
+static void
+vreader_list_entry_delete(VReaderListEntry *entry)
+{
+    if (entry == NULL) {
+        return;
+    }
+    vreader_free(entry->reader);
+    g_free(entry);
+}
+
+
+static VReaderList *
+vreader_list_new(void)
+{
+    VReaderList *new_reader_list;
+
+    new_reader_list = g_new0(VReaderList, 1);
+    return new_reader_list;
+}
+
+void
+vreader_list_delete(VReaderList *list)
+{
+    VReaderListEntry *current_entry;
+    VReaderListEntry *next_entry;
+    for (current_entry = vreader_list_get_first(list); current_entry;
+         current_entry = next_entry) {
+        next_entry = vreader_list_get_next(current_entry);
+        vreader_list_entry_delete(current_entry);
+    }
+    g_free(list);
+}
+
+
+VReaderListEntry *
+vreader_list_get_first(VReaderList *list)
+{
+    return list ? list->head : NULL;
+}
+
+VReaderListEntry *
+vreader_list_get_next(VReaderListEntry *current)
+{
+    return current ? current->next : NULL;
+}
+
+VReader *
+vreader_list_get_reader(VReaderListEntry *entry)
+{
+    return entry ? vreader_reference(entry->reader) : NULL;
+}
+
+static void
+vreader_queue(VReaderList *list, VReaderListEntry *entry)
+{
+    if (entry == NULL) {
+        return;
+    }
+    entry->next = NULL;
+    entry->prev = list->tail;
+    if (list->head) {
+        list->tail->next = entry;
+    } else {
+        list->head = entry;
+    }
+    list->tail = entry;
+}
+
+static void
+vreader_dequeue(VReaderList *list, VReaderListEntry *entry)
+{
+    if (entry == NULL) {
+        return;
+    }
+    if (entry->next == NULL) {
+        list->tail = entry->prev;
+    } else if (entry->prev == NULL) {
+        list->head = entry->next;
+    } else {
+        entry->prev->next = entry->next;
+        entry->next->prev = entry->prev;
+    }
+    if ((list->tail == NULL) || (list->head == NULL)) {
+        list->head = list->tail = NULL;
+    }
+    entry->next = entry->prev = NULL;
+}
+
+static VReaderList *vreader_list;
+static CompatGMutex vreader_list_mutex;
+
+static void
+vreader_list_init(void)
+{
+    vreader_list = vreader_list_new();
+}
+
+static void
+vreader_list_lock(void)
+{
+    g_mutex_lock(&vreader_list_mutex);
+}
+
+static void
+vreader_list_unlock(void)
+{
+    g_mutex_unlock(&vreader_list_mutex);
+}
+
+static VReaderList *
+vreader_copy_list(VReaderList *list)
+{
+    VReaderList *new_list;
+    VReaderListEntry *current_entry;
+
+    new_list = vreader_list_new();
+    if (new_list == NULL) {
+        return NULL;
+    }
+    for (current_entry = vreader_list_get_first(list); current_entry;
+         current_entry = vreader_list_get_next(current_entry)) {
+        VReader *reader = vreader_list_get_reader(current_entry);
+        VReaderListEntry *new_entry = vreader_list_entry_new(reader);
+
+        vreader_free(reader);
+        vreader_queue(new_list, new_entry);
+    }
+    return new_list;
+}
+
+VReaderList *
+vreader_get_reader_list(void)
+{
+    VReaderList *new_reader_list;
+
+    vreader_list_lock();
+    new_reader_list = vreader_copy_list(vreader_list);
+    vreader_list_unlock();
+    return new_reader_list;
+}
+
+VReader *
+vreader_get_reader_by_id(vreader_id_t id)
+{
+    VReader *reader = NULL;
+    VReaderListEntry *current_entry;
+
+    if (id == (vreader_id_t) -1) {
+        return NULL;
+    }
+
+    vreader_list_lock();
+    for (current_entry = vreader_list_get_first(vreader_list); current_entry;
+            current_entry = vreader_list_get_next(current_entry)) {
+        VReader *creader = vreader_list_get_reader(current_entry);
+        if (creader->id == id) {
+            reader = creader;
+            break;
+        }
+        vreader_free(creader);
+    }
+    vreader_list_unlock();
+    return reader;
+}
+
+VReader *
+vreader_get_reader_by_name(const char *name)
+{
+    VReader *reader = NULL;
+    VReaderListEntry *current_entry;
+
+    vreader_list_lock();
+    for (current_entry = vreader_list_get_first(vreader_list); current_entry;
+            current_entry = vreader_list_get_next(current_entry)) {
+        VReader *creader = vreader_list_get_reader(current_entry);
+        if (strcmp(creader->name, name) == 0) {
+            reader = creader;
+            break;
+        }
+        vreader_free(creader);
+    }
+    vreader_list_unlock();
+    return reader;
+}
+
+/* called from card_emul to initialize the readers */
+VReaderStatus
+vreader_add_reader(VReader *reader)
+{
+    VReaderListEntry *reader_entry;
+
+    reader_entry = vreader_list_entry_new(reader);
+    if (reader_entry == NULL) {
+        return VREADER_OUT_OF_MEMORY;
+    }
+    vreader_list_lock();
+    vreader_queue(vreader_list, reader_entry);
+    vreader_list_unlock();
+    vevent_queue_vevent(vevent_new(VEVENT_READER_INSERT, reader, NULL));
+    return VREADER_OK;
+}
+
+
+VReaderStatus
+vreader_remove_reader(VReader *reader)
+{
+    VReaderListEntry *current_entry;
+
+    vreader_list_lock();
+    for (current_entry = vreader_list_get_first(vreader_list); current_entry;
+         current_entry = vreader_list_get_next(current_entry)) {
+        if (current_entry->reader == reader) {
+            break;
+        }
+    }
+    vreader_dequeue(vreader_list, current_entry);
+    vreader_list_unlock();
+    vreader_list_entry_delete(current_entry);
+    vevent_queue_vevent(vevent_new(VEVENT_READER_REMOVE, reader, NULL));
+    return VREADER_OK;
+}
+
+/*
+ * Generate VEVENT_CARD_INSERT or VEVENT_CARD_REMOVE based on vreader
+ * state. Separated from vreader_insert_card to allow replaying events
+ * for a given state.
+ */
+void
+vreader_queue_card_event(VReader *reader)
+{
+    vevent_queue_vevent(vevent_new(
+        reader->card ? VEVENT_CARD_INSERT : VEVENT_CARD_REMOVE, reader,
+        reader->card));
+}
+
+/*
+ * insert/remove a new card. for removal, card == NULL
+ */
+VReaderStatus
+vreader_insert_card(VReader *reader, VCard *card)
+{
+    vreader_lock(reader);
+    if (reader->card) {
+        /* decrement reference count */
+        vcard_free(reader->card);
+        reader->card = NULL;
+    }
+    reader->card = vcard_reference(card);
+    vreader_unlock(reader);
+    vreader_queue_card_event(reader);
+    return VREADER_OK;
+}
+
+/*
+ * initialize all the static reader structures
+ */
+void
+vreader_init(void)
+{
+    vreader_list_init();
+}
+