This was done in a mostly automated fashion. I did it in three steps and then rebased it into a single step which avoids repeatedly touching every file in the tree. The first step was a sed-based addition of the parent type to the subclass registration functions. The second step was another sed-based removal of subclass registration functions while also adding virtual functions from the base class into a class_init function as appropriate. Finally, a python script was used to convert the DeviceInfo structures and qdev_register_subclass functions to TypeInfo structures, class_init functions, and type_register_static calls. We are almost fully converted to QOM after this commit. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
352 lines
10 KiB
C
352 lines
10 KiB
C
/*
|
|
* CCID Passthru Card Device emulation
|
|
*
|
|
* Copyright (c) 2011 Red Hat.
|
|
* Written by Alon Levy.
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2.1 or later.
|
|
* See the COPYING file in the top-level directory.
|
|
*/
|
|
|
|
#include "qemu-char.h"
|
|
#include "qemu_socket.h"
|
|
#include "monitor.h"
|
|
#include "hw/ccid.h"
|
|
#include "libcacard/vscard_common.h"
|
|
|
|
#define DPRINTF(card, lvl, fmt, ...) \
|
|
do { \
|
|
if (lvl <= card->debug) { \
|
|
printf("ccid-card-passthru: " fmt , ## __VA_ARGS__); \
|
|
} \
|
|
} while (0)
|
|
|
|
#define D_WARN 1
|
|
#define D_INFO 2
|
|
#define D_MORE_INFO 3
|
|
#define D_VERBOSE 4
|
|
|
|
/* TODO: do we still need this? */
|
|
uint8_t DEFAULT_ATR[] = {
|
|
/*
|
|
* From some example somewhere
|
|
* 0x3B, 0xB0, 0x18, 0x00, 0xD1, 0x81, 0x05, 0xB1, 0x40, 0x38, 0x1F, 0x03, 0x28
|
|
*/
|
|
|
|
/* From an Athena smart card */
|
|
0x3B, 0xD5, 0x18, 0xFF, 0x80, 0x91, 0xFE, 0x1F, 0xC3, 0x80, 0x73, 0xC8, 0x21,
|
|
0x13, 0x08
|
|
};
|
|
|
|
|
|
#define PASSTHRU_DEV_NAME "ccid-card-passthru"
|
|
#define VSCARD_IN_SIZE 65536
|
|
|
|
/* maximum size of ATR - from 7816-3 */
|
|
#define MAX_ATR_SIZE 40
|
|
|
|
typedef struct PassthruState PassthruState;
|
|
|
|
struct PassthruState {
|
|
CCIDCardState base;
|
|
CharDriverState *cs;
|
|
uint8_t vscard_in_data[VSCARD_IN_SIZE];
|
|
uint32_t vscard_in_pos;
|
|
uint32_t vscard_in_hdr;
|
|
uint8_t atr[MAX_ATR_SIZE];
|
|
uint8_t atr_length;
|
|
uint8_t debug;
|
|
};
|
|
|
|
/*
|
|
* VSCard protocol over chardev
|
|
* This code should not depend on the card type.
|
|
*/
|
|
|
|
static void ccid_card_vscard_send_msg(PassthruState *s,
|
|
VSCMsgType type, uint32_t reader_id,
|
|
const uint8_t *payload, uint32_t length)
|
|
{
|
|
VSCMsgHeader scr_msg_header;
|
|
|
|
scr_msg_header.type = htonl(type);
|
|
scr_msg_header.reader_id = htonl(reader_id);
|
|
scr_msg_header.length = htonl(length);
|
|
qemu_chr_fe_write(s->cs, (uint8_t *)&scr_msg_header, sizeof(VSCMsgHeader));
|
|
qemu_chr_fe_write(s->cs, payload, length);
|
|
}
|
|
|
|
static void ccid_card_vscard_send_apdu(PassthruState *s,
|
|
const uint8_t *apdu, uint32_t length)
|
|
{
|
|
ccid_card_vscard_send_msg(
|
|
s, VSC_APDU, VSCARD_MINIMAL_READER_ID, apdu, length);
|
|
}
|
|
|
|
static void ccid_card_vscard_send_error(PassthruState *s,
|
|
uint32_t reader_id, VSCErrorCode code)
|
|
{
|
|
VSCMsgError msg = {.code = htonl(code)};
|
|
|
|
ccid_card_vscard_send_msg(
|
|
s, VSC_Error, reader_id, (uint8_t *)&msg, sizeof(msg));
|
|
}
|
|
|
|
static void ccid_card_vscard_send_init(PassthruState *s)
|
|
{
|
|
VSCMsgInit msg = {
|
|
.version = htonl(VSCARD_VERSION),
|
|
.magic = VSCARD_MAGIC,
|
|
.capabilities = {0}
|
|
};
|
|
|
|
ccid_card_vscard_send_msg(s, VSC_Init, VSCARD_UNDEFINED_READER_ID,
|
|
(uint8_t *)&msg, sizeof(msg));
|
|
}
|
|
|
|
static int ccid_card_vscard_can_read(void *opaque)
|
|
{
|
|
PassthruState *card = opaque;
|
|
|
|
return VSCARD_IN_SIZE >= card->vscard_in_pos ?
|
|
VSCARD_IN_SIZE - card->vscard_in_pos : 0;
|
|
}
|
|
|
|
static void ccid_card_vscard_handle_init(
|
|
PassthruState *card, VSCMsgHeader *hdr, VSCMsgInit *init)
|
|
{
|
|
uint32_t *capabilities;
|
|
int num_capabilities;
|
|
int i;
|
|
|
|
capabilities = init->capabilities;
|
|
num_capabilities =
|
|
1 + ((hdr->length - sizeof(VSCMsgInit)) / sizeof(uint32_t));
|
|
init->version = ntohl(init->version);
|
|
for (i = 0 ; i < num_capabilities; ++i) {
|
|
capabilities[i] = ntohl(capabilities[i]);
|
|
}
|
|
if (init->magic != VSCARD_MAGIC) {
|
|
error_report("wrong magic");
|
|
/* we can't disconnect the chardev */
|
|
}
|
|
if (init->version != VSCARD_VERSION) {
|
|
DPRINTF(card, D_WARN,
|
|
"got version %d, have %d", init->version, VSCARD_VERSION);
|
|
}
|
|
/* future handling of capabilities, none exist atm */
|
|
ccid_card_vscard_send_init(card);
|
|
}
|
|
|
|
static void ccid_card_vscard_handle_message(PassthruState *card,
|
|
VSCMsgHeader *scr_msg_header)
|
|
{
|
|
uint8_t *data = (uint8_t *)&scr_msg_header[1];
|
|
|
|
switch (scr_msg_header->type) {
|
|
case VSC_ATR:
|
|
DPRINTF(card, D_INFO, "VSC_ATR %d\n", scr_msg_header->length);
|
|
if (scr_msg_header->length > MAX_ATR_SIZE) {
|
|
error_report("ATR size exceeds spec, ignoring");
|
|
ccid_card_vscard_send_error(card, scr_msg_header->reader_id,
|
|
VSC_GENERAL_ERROR);
|
|
break;
|
|
}
|
|
memcpy(card->atr, data, scr_msg_header->length);
|
|
card->atr_length = scr_msg_header->length;
|
|
ccid_card_card_inserted(&card->base);
|
|
ccid_card_vscard_send_error(card, scr_msg_header->reader_id,
|
|
VSC_SUCCESS);
|
|
break;
|
|
case VSC_APDU:
|
|
ccid_card_send_apdu_to_guest(
|
|
&card->base, data, scr_msg_header->length);
|
|
break;
|
|
case VSC_CardRemove:
|
|
DPRINTF(card, D_INFO, "VSC_CardRemove\n");
|
|
ccid_card_card_removed(&card->base);
|
|
ccid_card_vscard_send_error(card,
|
|
scr_msg_header->reader_id, VSC_SUCCESS);
|
|
break;
|
|
case VSC_Init:
|
|
ccid_card_vscard_handle_init(
|
|
card, scr_msg_header, (VSCMsgInit *)data);
|
|
break;
|
|
case VSC_Error:
|
|
ccid_card_card_error(&card->base, *(uint32_t *)data);
|
|
break;
|
|
case VSC_ReaderAdd:
|
|
if (ccid_card_ccid_attach(&card->base) < 0) {
|
|
ccid_card_vscard_send_error(card, VSCARD_UNDEFINED_READER_ID,
|
|
VSC_CANNOT_ADD_MORE_READERS);
|
|
} else {
|
|
ccid_card_vscard_send_error(card, VSCARD_MINIMAL_READER_ID,
|
|
VSC_SUCCESS);
|
|
}
|
|
break;
|
|
case VSC_ReaderRemove:
|
|
ccid_card_ccid_detach(&card->base);
|
|
ccid_card_vscard_send_error(card,
|
|
scr_msg_header->reader_id, VSC_SUCCESS);
|
|
break;
|
|
default:
|
|
printf("usb-ccid: chardev: unexpected message of type %X\n",
|
|
scr_msg_header->type);
|
|
ccid_card_vscard_send_error(card, scr_msg_header->reader_id,
|
|
VSC_GENERAL_ERROR);
|
|
}
|
|
}
|
|
|
|
static void ccid_card_vscard_drop_connection(PassthruState *card)
|
|
{
|
|
qemu_chr_delete(card->cs);
|
|
card->vscard_in_pos = card->vscard_in_hdr = 0;
|
|
}
|
|
|
|
static void ccid_card_vscard_read(void *opaque, const uint8_t *buf, int size)
|
|
{
|
|
PassthruState *card = opaque;
|
|
VSCMsgHeader *hdr;
|
|
|
|
if (card->vscard_in_pos + size > VSCARD_IN_SIZE) {
|
|
error_report(
|
|
"no room for data: pos %d + size %d > %d. dropping connection.",
|
|
card->vscard_in_pos, size, VSCARD_IN_SIZE);
|
|
ccid_card_vscard_drop_connection(card);
|
|
return;
|
|
}
|
|
assert(card->vscard_in_pos < VSCARD_IN_SIZE);
|
|
assert(card->vscard_in_hdr < VSCARD_IN_SIZE);
|
|
memcpy(card->vscard_in_data + card->vscard_in_pos, buf, size);
|
|
card->vscard_in_pos += size;
|
|
hdr = (VSCMsgHeader *)(card->vscard_in_data + card->vscard_in_hdr);
|
|
|
|
while ((card->vscard_in_pos - card->vscard_in_hdr >= sizeof(VSCMsgHeader))
|
|
&&(card->vscard_in_pos - card->vscard_in_hdr >=
|
|
sizeof(VSCMsgHeader) + ntohl(hdr->length))) {
|
|
hdr->reader_id = ntohl(hdr->reader_id);
|
|
hdr->length = ntohl(hdr->length);
|
|
hdr->type = ntohl(hdr->type);
|
|
ccid_card_vscard_handle_message(card, hdr);
|
|
card->vscard_in_hdr += hdr->length + sizeof(VSCMsgHeader);
|
|
hdr = (VSCMsgHeader *)(card->vscard_in_data + card->vscard_in_hdr);
|
|
}
|
|
if (card->vscard_in_hdr == card->vscard_in_pos) {
|
|
card->vscard_in_pos = card->vscard_in_hdr = 0;
|
|
}
|
|
}
|
|
|
|
static void ccid_card_vscard_event(void *opaque, int event)
|
|
{
|
|
PassthruState *card = opaque;
|
|
|
|
switch (event) {
|
|
case CHR_EVENT_BREAK:
|
|
card->vscard_in_pos = card->vscard_in_hdr = 0;
|
|
break;
|
|
case CHR_EVENT_FOCUS:
|
|
break;
|
|
case CHR_EVENT_OPENED:
|
|
DPRINTF(card, D_INFO, "%s: CHR_EVENT_OPENED\n", __func__);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* End VSCard handling */
|
|
|
|
static void passthru_apdu_from_guest(
|
|
CCIDCardState *base, const uint8_t *apdu, uint32_t len)
|
|
{
|
|
PassthruState *card = DO_UPCAST(PassthruState, base, base);
|
|
|
|
if (!card->cs) {
|
|
printf("ccid-passthru: no chardev, discarding apdu length %d\n", len);
|
|
return;
|
|
}
|
|
ccid_card_vscard_send_apdu(card, apdu, len);
|
|
}
|
|
|
|
static const uint8_t *passthru_get_atr(CCIDCardState *base, uint32_t *len)
|
|
{
|
|
PassthruState *card = DO_UPCAST(PassthruState, base, base);
|
|
|
|
*len = card->atr_length;
|
|
return card->atr;
|
|
}
|
|
|
|
static int passthru_initfn(CCIDCardState *base)
|
|
{
|
|
PassthruState *card = DO_UPCAST(PassthruState, base, base);
|
|
|
|
card->vscard_in_pos = 0;
|
|
card->vscard_in_hdr = 0;
|
|
if (card->cs) {
|
|
DPRINTF(card, D_INFO, "initing chardev\n");
|
|
qemu_chr_add_handlers(card->cs,
|
|
ccid_card_vscard_can_read,
|
|
ccid_card_vscard_read,
|
|
ccid_card_vscard_event, card);
|
|
ccid_card_vscard_send_init(card);
|
|
} else {
|
|
error_report("missing chardev");
|
|
return -1;
|
|
}
|
|
assert(sizeof(DEFAULT_ATR) <= MAX_ATR_SIZE);
|
|
memcpy(card->atr, DEFAULT_ATR, sizeof(DEFAULT_ATR));
|
|
card->atr_length = sizeof(DEFAULT_ATR);
|
|
return 0;
|
|
}
|
|
|
|
static int passthru_exitfn(CCIDCardState *base)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static VMStateDescription passthru_vmstate = {
|
|
.name = PASSTHRU_DEV_NAME,
|
|
.version_id = 1,
|
|
.minimum_version_id = 1,
|
|
.fields = (VMStateField[]) {
|
|
VMSTATE_BUFFER(vscard_in_data, PassthruState),
|
|
VMSTATE_UINT32(vscard_in_pos, PassthruState),
|
|
VMSTATE_UINT32(vscard_in_hdr, PassthruState),
|
|
VMSTATE_BUFFER(atr, PassthruState),
|
|
VMSTATE_UINT8(atr_length, PassthruState),
|
|
VMSTATE_END_OF_LIST()
|
|
}
|
|
};
|
|
|
|
static Property passthru_card_properties[] = {
|
|
DEFINE_PROP_CHR("chardev", PassthruState, cs),
|
|
DEFINE_PROP_UINT8("debug", PassthruState, debug, 0),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
};
|
|
|
|
static void passthru_class_initfn(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
CCIDCardClass *cc = CCID_CARD_CLASS(klass);
|
|
|
|
cc->initfn = passthru_initfn;
|
|
cc->exitfn = passthru_exitfn;
|
|
cc->get_atr = passthru_get_atr;
|
|
cc->apdu_from_guest = passthru_apdu_from_guest;
|
|
dc->desc = "passthrough smartcard";
|
|
dc->vmsd = &passthru_vmstate;
|
|
dc->props = passthru_card_properties;
|
|
}
|
|
|
|
static TypeInfo passthru_card_info = {
|
|
.name = PASSTHRU_DEV_NAME,
|
|
.parent = TYPE_CCID_CARD,
|
|
.instance_size = sizeof(PassthruState),
|
|
.class_init = passthru_class_initfn,
|
|
};
|
|
|
|
static void ccid_card_passthru_register_devices(void)
|
|
{
|
|
type_register_static(&passthru_card_info);
|
|
}
|
|
|
|
device_init(ccid_card_passthru_register_devices)
|