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path: root/hw/usb/ccid-card-emulated.c
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Diffstat (limited to 'hw/usb/ccid-card-emulated.c')
-rw-r--r--hw/usb/ccid-card-emulated.c109
1 files changed, 65 insertions, 44 deletions
diff --git a/hw/usb/ccid-card-emulated.c b/hw/usb/ccid-card-emulated.c
index 5c8b3c9907..3ee9c73b87 100644
--- a/hw/usb/ccid-card-emulated.c
+++ b/hw/usb/ccid-card-emulated.c
@@ -30,9 +30,13 @@
#include <libcacard.h>
#include "qemu/thread.h"
+#include "qemu/lockable.h"
#include "qemu/main-loop.h"
+#include "qemu/module.h"
#include "ccid.h"
+#include "hw/qdev-properties.h"
#include "qapi/error.h"
+#include "qom/object.h"
#define DPRINTF(card, lvl, fmt, ...) \
do {\
@@ -43,8 +47,9 @@ do {\
#define TYPE_EMULATED_CCID "ccid-card-emulated"
-#define EMULATED_CCID_CARD(obj) \
- OBJECT_CHECK(EmulatedState, (obj), TYPE_EMULATED_CCID)
+typedef struct EmulatedState EmulatedState;
+DECLARE_INSTANCE_CHECKER(EmulatedState, EMULATED_CCID_CARD,
+ TYPE_EMULATED_CCID)
#define BACKEND_NSS_EMULATED_NAME "nss-emulated"
#define BACKEND_CERTIFICATES_NAME "certificates"
@@ -56,7 +61,6 @@ enum {
#define DEFAULT_BACKEND BACKEND_NSS_EMULATED
-typedef struct EmulatedState EmulatedState;
enum {
EMUL_READER_INSERT = 0,
@@ -119,11 +123,11 @@ struct EmulatedState {
char *db;
uint8_t atr[MAX_ATR_SIZE];
uint8_t atr_length;
- QSIMPLEQ_HEAD(event_list, EmulEvent) event_list;
+ QSIMPLEQ_HEAD(, EmulEvent) event_list;
QemuMutex event_list_mutex;
QemuThread event_thread_id;
VReader *reader;
- QSIMPLEQ_HEAD(guest_apdu_list, EmulEvent) guest_apdu_list;
+ QSIMPLEQ_HEAD(, EmulEvent) guest_apdu_list;
QemuMutex vreader_mutex; /* and guest_apdu_list mutex */
QemuMutex handle_apdu_mutex;
QemuCond handle_apdu_cond;
@@ -136,7 +140,7 @@ static void emulated_apdu_from_guest(CCIDCardState *base,
const uint8_t *apdu, uint32_t len)
{
EmulatedState *card = EMULATED_CCID_CARD(base);
- EmulEvent *event = (EmulEvent *)g_malloc(sizeof(EmulEvent) + len);
+ EmulEvent *event = g_malloc(sizeof(EmulEvent) + len);
assert(event);
event->p.data.type = EMUL_GUEST_APDU;
@@ -241,34 +245,34 @@ static void *handle_apdu_thread(void* arg)
card->quit_apdu_thread = 0; /* debugging */
break;
}
- qemu_mutex_lock(&card->vreader_mutex);
- while (!QSIMPLEQ_EMPTY(&card->guest_apdu_list)) {
- event = QSIMPLEQ_FIRST(&card->guest_apdu_list);
- assert((unsigned long)event > 1000);
- QSIMPLEQ_REMOVE_HEAD(&card->guest_apdu_list, entry);
- if (event->p.data.type != EMUL_GUEST_APDU) {
- DPRINTF(card, 1, "unexpected message in handle_apdu_thread\n");
- g_free(event);
- continue;
- }
- if (card->reader == NULL) {
- DPRINTF(card, 1, "reader is NULL\n");
+ WITH_QEMU_LOCK_GUARD(&card->vreader_mutex) {
+ while (!QSIMPLEQ_EMPTY(&card->guest_apdu_list)) {
+ event = QSIMPLEQ_FIRST(&card->guest_apdu_list);
+ assert(event != NULL);
+ QSIMPLEQ_REMOVE_HEAD(&card->guest_apdu_list, entry);
+ if (event->p.data.type != EMUL_GUEST_APDU) {
+ DPRINTF(card, 1, "unexpected message in handle_apdu_thread\n");
+ g_free(event);
+ continue;
+ }
+ if (card->reader == NULL) {
+ DPRINTF(card, 1, "reader is NULL\n");
+ g_free(event);
+ continue;
+ }
+ recv_len = sizeof(recv_data);
+ reader_status = vreader_xfr_bytes(card->reader,
+ event->p.data.data, event->p.data.len,
+ recv_data, &recv_len);
+ DPRINTF(card, 2, "got back apdu of length %d\n", recv_len);
+ if (reader_status == VREADER_OK) {
+ emulated_push_response_apdu(card, recv_data, recv_len);
+ } else {
+ emulated_push_error(card, reader_status);
+ }
g_free(event);
- continue;
}
- recv_len = sizeof(recv_data);
- reader_status = vreader_xfr_bytes(card->reader,
- event->p.data.data, event->p.data.len,
- recv_data, &recv_len);
- DPRINTF(card, 2, "got back apdu of length %d\n", recv_len);
- if (reader_status == VREADER_OK) {
- emulated_push_response_apdu(card, recv_data, recv_len);
- } else {
- emulated_push_error(card, reader_status);
- }
- g_free(event);
}
- qemu_mutex_unlock(&card->vreader_mutex);
}
return NULL;
}
@@ -297,7 +301,7 @@ static void *event_thread(void *arg)
} else {
if (event->reader != card->reader) {
fprintf(stderr,
- "ERROR: wrong reader: quiting event_thread\n");
+ "ERROR: wrong reader: quitting event_thread\n");
break;
}
}
@@ -348,7 +352,6 @@ static void *event_thread(void *arg)
case VEVENT_LAST: /* quit */
vevent_delete(event);
return NULL;
- break;
default:
break;
}
@@ -363,7 +366,7 @@ static void card_event_handler(EventNotifier *notifier)
EmulEvent *event, *next;
event_notifier_test_and_clear(&card->notifier);
- qemu_mutex_lock(&card->event_list_mutex);
+ QEMU_LOCK_GUARD(&card->event_list_mutex);
QSIMPLEQ_FOREACH_SAFE(event, &card->event_list, entry, next) {
DPRINTF(card, 2, "event %s\n", emul_event_to_string(event->p.gen.type));
switch (event->p.gen.type) {
@@ -396,7 +399,6 @@ static void card_event_handler(EventNotifier *notifier)
g_free(event);
}
QSIMPLEQ_INIT(&card->event_list);
- qemu_mutex_unlock(&card->event_list_mutex);
}
static int init_event_notifier(EmulatedState *card, Error **errp)
@@ -409,6 +411,12 @@ static int init_event_notifier(EmulatedState *card, Error **errp)
return 0;
}
+static void clean_event_notifier(EmulatedState *card)
+{
+ event_notifier_set_handler(&card->notifier, NULL);
+ event_notifier_cleanup(&card->notifier);
+}
+
#define CERTIFICATES_DEFAULT_DB "/etc/pki/nssdb"
#define CERTIFICATES_ARGS_TEMPLATE\
"db=\"%s\" use_hw=no soft=(,Virtual Reader,CAC,,%s,%s,%s)"
@@ -493,7 +501,7 @@ static void emulated_realize(CCIDCardState *base, Error **errp)
card->reader = NULL;
card->quit_apdu_thread = 0;
if (init_event_notifier(card, errp) < 0) {
- return;
+ goto out1;
}
card->backend = 0;
@@ -507,44 +515,54 @@ static void emulated_realize(CCIDCardState *base, Error **errp)
for (ptable = backend_enum_table; ptable->name != NULL; ++ptable) {
error_append_hint(errp, "%s\n", ptable->name);
}
- return;
+ goto out2;
}
- /* TODO: a passthru backened that works on local machine. third card type?*/
+ /* TODO: a passthru backend that works on local machine. third card type?*/
if (card->backend == BACKEND_CERTIFICATES) {
if (card->cert1 != NULL && card->cert2 != NULL && card->cert3 != NULL) {
ret = emulated_initialize_vcard_from_certificates(card);
} else {
error_setg(errp, "%s: you must provide all three certs for"
" certificates backend", TYPE_EMULATED_CCID);
- return;
+ goto out2;
}
} else {
if (card->backend != BACKEND_NSS_EMULATED) {
error_setg(errp, "%s: bad backend specified. The options are:%s"
" (default), %s.", TYPE_EMULATED_CCID,
BACKEND_NSS_EMULATED_NAME, BACKEND_CERTIFICATES_NAME);
- return;
+ goto out2;
}
if (card->cert1 != NULL || card->cert2 != NULL || card->cert3 != NULL) {
error_setg(errp, "%s: unexpected cert parameters to nss emulated "
"backend", TYPE_EMULATED_CCID);
- return;
+ goto out2;
}
/* default to mirroring the local hardware readers */
ret = wrap_vcard_emul_init(NULL);
}
if (ret != VCARD_EMUL_OK) {
error_setg(errp, "%s: failed to initialize vcard", TYPE_EMULATED_CCID);
- return;
+ goto out2;
}
qemu_thread_create(&card->event_thread_id, "ccid/event", event_thread,
card, QEMU_THREAD_JOINABLE);
qemu_thread_create(&card->apdu_thread_id, "ccid/apdu", handle_apdu_thread,
card, QEMU_THREAD_JOINABLE);
+
+ return;
+
+out2:
+ clean_event_notifier(card);
+out1:
+ qemu_cond_destroy(&card->handle_apdu_cond);
+ qemu_mutex_destroy(&card->handle_apdu_mutex);
+ qemu_mutex_destroy(&card->vreader_mutex);
+ qemu_mutex_destroy(&card->event_list_mutex);
}
-static void emulated_unrealize(CCIDCardState *base, Error **errp)
+static void emulated_unrealize(CCIDCardState *base)
{
EmulatedState *card = EMULATED_CCID_CARD(base);
VEvent *vevent = vevent_new(VEVENT_LAST, NULL, NULL);
@@ -556,6 +574,7 @@ static void emulated_unrealize(CCIDCardState *base, Error **errp)
qemu_cond_signal(&card->handle_apdu_cond);
qemu_thread_join(&card->apdu_thread_id);
+ clean_event_notifier(card);
/* threads exited, can destroy all condvars/mutexes */
qemu_cond_destroy(&card->handle_apdu_cond);
qemu_mutex_destroy(&card->handle_apdu_mutex);
@@ -584,7 +603,7 @@ static void emulated_class_initfn(ObjectClass *klass, void *data)
cc->apdu_from_guest = emulated_apdu_from_guest;
set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
dc->desc = "emulated smartcard";
- dc->props = emulated_card_properties;
+ device_class_set_props(dc, emulated_card_properties);
}
static const TypeInfo emulated_card_info = {
@@ -593,6 +612,8 @@ static const TypeInfo emulated_card_info = {
.instance_size = sizeof(EmulatedState),
.class_init = emulated_class_initfn,
};
+module_obj(TYPE_EMULATED_CCID);
+module_kconfig(USB);
static void ccid_card_emulated_register_types(void)
{
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-24 18:20:37 +0000