[Spice-devel] [PATCH spice-server v2 1/7] Split RedCharDeviceSmartcard and SmartCardChannelClient
Frediano Ziglio
fziglio at redhat.com
Fri Sep 30 13:21:46 UTC 2016
---
server/Makefile.am | 2 +
server/smartcard-channel-client.c | 300 +++++++++++++++++++++++++++++++
server/smartcard-channel-client.h | 96 ++++++++++
server/smartcard.c | 360 ++++++--------------------------------
server/smartcard.h | 21 +++
5 files changed, 471 insertions(+), 308 deletions(-)
create mode 100644 server/smartcard-channel-client.c
create mode 100644 server/smartcard-channel-client.h
diff --git a/server/Makefile.am b/server/Makefile.am
index 9c5b3b6..abbec16 100644
--- a/server/Makefile.am
+++ b/server/Makefile.am
@@ -172,6 +172,8 @@ if HAVE_SMARTCARD
libserver_la_SOURCES += \
smartcard.c \
smartcard.h \
+ smartcard-channel-client.c \
+ smartcard-channel-client.h \
$(NULL)
endif
diff --git a/server/smartcard-channel-client.c b/server/smartcard-channel-client.c
new file mode 100644
index 0000000..0622be5
--- /dev/null
+++ b/server/smartcard-channel-client.c
@@ -0,0 +1,300 @@
+/*
+ Copyright (C) 2009-2015 Red Hat, Inc.
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, see <http://www.gnu.org/licenses/>.
+*/
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "smartcard-channel-client.h"
+
+typedef struct RedErrorItem {
+ RedPipeItem base;
+ VSCMsgHeader vheader;
+ VSCMsgError error;
+} RedErrorItem;
+
+uint8_t *smartcard_channel_client_alloc_msg_rcv_buf(RedChannelClient *rcc,
+ uint16_t type,
+ uint32_t size)
+{
+ SmartCardChannelClient *scc = SMARTCARD_CHANNEL_CLIENT(rcc);
+ RedClient *client = red_channel_client_get_client(rcc);
+
+ /* todo: only one reader is actually supported. When we fix the code to support
+ * multiple readers, we will porbably associate different devices to
+ * differenc channels */
+ if (!scc->priv->smartcard) {
+ scc->priv->msg_in_write_buf = FALSE;
+ return spice_malloc(size);
+ } else {
+ RedCharDeviceSmartcard *smartcard;
+
+ spice_assert(smartcard_get_n_readers() == 1);
+ smartcard = scc->priv->smartcard;
+ spice_assert(smartcard_char_device_get_client(smartcard) || scc->priv->smartcard);
+ spice_assert(!scc->priv->write_buf);
+ scc->priv->write_buf =
+ red_char_device_write_buffer_get(RED_CHAR_DEVICE(smartcard), client,
+ size);
+
+ if (!scc->priv->write_buf) {
+ spice_error("failed to allocate write buffer");
+ return NULL;
+ }
+ scc->priv->msg_in_write_buf = TRUE;
+ return scc->priv->write_buf->buf;
+ }
+}
+
+void smartcard_channel_client_release_msg_rcv_buf(RedChannelClient *rcc,
+ uint16_t type,
+ uint32_t size,
+ uint8_t *msg)
+{
+ SmartCardChannelClient *scc = SMARTCARD_CHANNEL_CLIENT(rcc);
+
+ /* todo: only one reader is actually supported. When we fix the code to support
+ * multiple readers, we will porbably associate different devices to
+ * differenc channels */
+
+ if (!scc->priv->msg_in_write_buf) {
+ spice_assert(!scc->priv->write_buf);
+ free(msg);
+ } else {
+ if (scc->priv->write_buf) { /* msg hasn't been pushed to the guest */
+ spice_assert(scc->priv->write_buf->buf == msg);
+ red_char_device_write_buffer_release(RED_CHAR_DEVICE(scc->priv->smartcard),
+ &scc->priv->write_buf);
+ }
+ }
+}
+
+void smartcard_channel_client_on_disconnect(RedChannelClient *rcc)
+{
+ SmartCardChannelClient *scc = SMARTCARD_CHANNEL_CLIENT(rcc);
+ RedCharDeviceSmartcard *device = scc->priv->smartcard;
+
+ if (device) {
+ smartcard_char_device_detach_client(device, scc);
+ smartcard_char_device_notify_reader_remove(device);
+ }
+}
+
+void smartcard_channel_client_send_data(RedChannelClient *rcc,
+ SpiceMarshaller *m,
+ RedPipeItem *item,
+ VSCMsgHeader *vheader)
+{
+ spice_assert(rcc);
+ spice_assert(vheader);
+ red_channel_client_init_send_data(rcc, SPICE_MSG_SMARTCARD_DATA, item);
+ spice_marshaller_add_ref(m, (uint8_t*)vheader, sizeof(VSCMsgHeader));
+ if (vheader->length > 0) {
+ spice_marshaller_add_ref(m, (uint8_t*)(vheader+1), vheader->length);
+ }
+}
+
+void smartcard_channel_client_send_error(RedChannelClient *rcc, SpiceMarshaller *m, RedPipeItem *item)
+{
+ RedErrorItem* error_item = SPICE_UPCAST(RedErrorItem, item);
+
+ smartcard_channel_client_send_data(rcc, m, item, &error_item->vheader);
+}
+
+static void smartcard_channel_client_push_error(RedChannelClient *rcc,
+ uint32_t reader_id,
+ VSCErrorCode error)
+{
+ RedErrorItem *error_item = spice_new0(RedErrorItem, 1);
+
+ red_pipe_item_init(&error_item->base, RED_PIPE_ITEM_TYPE_ERROR);
+
+ error_item->vheader.reader_id = reader_id;
+ error_item->vheader.type = VSC_Error;
+ error_item->vheader.length = sizeof(error_item->error);
+ error_item->error.code = error;
+ red_channel_client_pipe_add_push(rcc, &error_item->base);
+}
+
+static void smartcard_channel_client_add_reader(SmartCardChannelClient *scc,
+ uint8_t *name)
+{
+ if (!scc->priv->smartcard) { /* we already tried to attach a reader to the client
+ when it connected */
+ SpiceCharDeviceInstance *char_device = smartcard_readers_get_unattached();
+
+ if (!char_device) {
+ smartcard_channel_client_push_error(RED_CHANNEL_CLIENT(scc),
+ VSCARD_UNDEFINED_READER_ID,
+ VSC_CANNOT_ADD_MORE_READERS);
+ return;
+ }
+ smartcard_char_device_attach_client(char_device, scc);
+ }
+ smartcard_char_device_notify_reader_add(scc->priv->smartcard);
+ // The device sends a VSC_Error message, we will let it through, no
+ // need to send our own. We already set the correct reader_id, from
+ // our RedCharDeviceSmartcard.
+}
+
+static void smartcard_channel_client_remove_reader(SmartCardChannelClient *scc,
+ uint32_t reader_id)
+{
+ SpiceCharDeviceInstance *char_device = smartcard_readers_get(reader_id);
+ RedCharDeviceSmartcard *dev;
+
+ if (char_device == NULL) {
+ smartcard_channel_client_push_error(RED_CHANNEL_CLIENT(scc),
+ reader_id, VSC_GENERAL_ERROR);
+ return;
+ }
+
+ dev = red_char_device_opaque_get(char_device->st);
+ spice_assert(scc->priv->smartcard == dev);
+ if (!smartcard_char_device_notify_reader_remove(dev)) {
+ smartcard_channel_client_push_error(RED_CHANNEL_CLIENT(scc),
+ reader_id, VSC_GENERAL_ERROR);
+ return;
+ }
+}
+
+RedCharDeviceSmartcard* smartcard_channel_client_get_device(SmartCardChannelClient *scc)
+{
+ return scc->priv->smartcard;
+}
+
+static void smartcard_channel_client_write_to_reader(SmartCardChannelClient *scc)
+{
+ g_return_if_fail(scc);
+
+ smartcard_channel_write_to_reader(scc->priv->write_buf);
+ scc->priv->write_buf = NULL;
+}
+
+
+int smartcard_channel_client_handle_message(RedChannelClient *rcc,
+ uint16_t type,
+ uint32_t size,
+ uint8_t *msg)
+{
+ VSCMsgHeader* vheader = (VSCMsgHeader*)msg;
+ SmartCardChannelClient *scc = SMARTCARD_CHANNEL_CLIENT(rcc);
+
+ if (type != SPICE_MSGC_SMARTCARD_DATA) {
+ /* Handles seamless migration protocol. Also handles ack's,
+ * spicy sends them while spicec does not */
+ return red_channel_client_handle_message(rcc, size, type, msg);
+ }
+
+ spice_assert(size == vheader->length + sizeof(VSCMsgHeader));
+ switch (vheader->type) {
+ case VSC_ReaderAdd:
+ smartcard_channel_client_add_reader(scc, msg + sizeof(VSCMsgHeader));
+ return TRUE;
+ break;
+ case VSC_ReaderRemove:
+ smartcard_channel_client_remove_reader(scc, vheader->reader_id);
+ return TRUE;
+ break;
+ case VSC_Init:
+ // ignore - we should never get this anyway
+ return TRUE;
+ break;
+ case VSC_Error:
+ case VSC_ATR:
+ case VSC_CardRemove:
+ case VSC_APDU:
+ break; // passed on to device
+ default:
+ printf("ERROR: unexpected message on smartcard channel\n");
+ return TRUE;
+ }
+
+ /* todo: fix */
+ if (vheader->reader_id >= smartcard_get_n_readers()) {
+ spice_printerr("ERROR: received message for non existing reader: %d, %d, %d", vheader->reader_id,
+ vheader->type, vheader->length);
+ return FALSE;
+ }
+ spice_assert(scc->priv->write_buf->buf == msg);
+ smartcard_channel_client_write_to_reader(scc);
+
+ return TRUE;
+}
+
+int smartcard_channel_client_handle_migrate_data(RedChannelClient *rcc,
+ uint32_t size,
+ void *message)
+{
+ SmartCardChannelClient *scc;
+ SpiceMigrateDataHeader *header;
+ SpiceMigrateDataSmartcard *mig_data;
+
+ scc = SMARTCARD_CHANNEL_CLIENT(rcc);
+ header = (SpiceMigrateDataHeader *)message;
+ mig_data = (SpiceMigrateDataSmartcard *)(header + 1);
+ if (size < sizeof(SpiceMigrateDataHeader) + sizeof(SpiceMigrateDataSmartcard)) {
+ spice_error("bad message size");
+ return FALSE;
+ }
+ if (!migration_protocol_validate_header(header,
+ SPICE_MIGRATE_DATA_SMARTCARD_MAGIC,
+ SPICE_MIGRATE_DATA_SMARTCARD_VERSION)) {
+ spice_error("bad header");
+ return FALSE;
+ }
+
+ if (!mig_data->base.connected) { /* client wasn't attached to a smartcard */
+ return TRUE;
+ }
+
+ if (!scc->priv->smartcard) {
+ SpiceCharDeviceInstance *char_device = smartcard_readers_get_unattached();
+
+ if (!char_device) {
+ spice_warning("no unattached device available");
+ return TRUE;
+ } else {
+ smartcard_char_device_attach_client(char_device, scc);
+ }
+ }
+ spice_debug("reader added %d partial read_size %u", mig_data->reader_added, mig_data->read_size);
+
+ return smartcard_char_device_handle_migrate_data(scc->priv->smartcard,
+ mig_data);
+}
+
+int smartcard_channel_client_handle_migrate_flush_mark(RedChannelClient *rcc)
+{
+ red_channel_client_pipe_add_type(rcc, RED_PIPE_ITEM_TYPE_SMARTCARD_MIGRATE_DATA);
+ return TRUE;
+}
+
+void smartcard_channel_client_set_char_device(SmartCardChannelClient *scc,
+ RedCharDeviceSmartcard *device)
+{
+ if (device == scc->priv->smartcard) {
+ return;
+ }
+
+ scc->priv->smartcard = device;
+}
+
+RedCharDeviceSmartcard* smartcard_channel_client_get_char_device(SmartCardChannelClient *scc)
+{
+ return scc->priv->smartcard;
+}
+
diff --git a/server/smartcard-channel-client.h b/server/smartcard-channel-client.h
new file mode 100644
index 0000000..44a966a
--- /dev/null
+++ b/server/smartcard-channel-client.h
@@ -0,0 +1,96 @@
+/*
+ Copyright (C) 2009-2015 Red Hat, Inc.
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef SMARTCARD_CHANNEL_CLIENT_H__
+#define SMARTCARD_CHANNEL_CLIENT_H__
+
+#include "smartcard.h"
+#include "red-channel-client.h"
+
+typedef struct SmartCardChannelClientPrivate SmartCardChannelClientPrivate;
+struct SmartCardChannelClientPrivate {
+ RedCharDeviceSmartcard *smartcard;
+
+ /* read_from_client/write_to_device buffer.
+ * The beginning of the buffer should always be VSCMsgHeader*/
+ RedCharDeviceWriteBuffer *write_buf;
+ int msg_in_write_buf; /* was the client msg received into a RedCharDeviceWriteBuffer
+ * or was it explicitly malloced */
+};
+
+typedef struct SmartCardChannelClient {
+ RedChannelClient base;
+
+ SmartCardChannelClientPrivate priv[1];
+} SmartCardChannelClient;
+
+#define SMARTCARD_CHANNEL_CLIENT(rcc) ((SmartCardChannelClient*)rcc)
+
+SmartCardChannelClient* smartcard_channel_client_create(RedChannel *channel,
+ RedClient *client, RedsStream *stream,
+ int monitor_latency,
+ int num_common_caps, uint32_t *common_caps,
+ int num_caps, uint32_t *caps);
+
+uint8_t* smartcard_channel_client_alloc_msg_rcv_buf(RedChannelClient *rcc,
+ uint16_t type,
+ uint32_t size);
+
+void smartcard_channel_client_release_msg_rcv_buf(RedChannelClient *rcc,
+ uint16_t type,
+ uint32_t size,
+ uint8_t *msg);
+
+int smartcard_channel_client_handle_migrate_flush_mark(RedChannelClient *rcc);
+
+void smartcard_channel_client_on_disconnect(RedChannelClient *rcc);
+
+void smartcard_channel_client_send_data(RedChannelClient *rcc,
+ SpiceMarshaller *m,
+ RedPipeItem *item,
+ VSCMsgHeader *vheader);
+
+void smartcard_channel_client_send_error(RedChannelClient *rcc,
+ SpiceMarshaller *m,
+ RedPipeItem *item);
+
+RedCharDeviceSmartcard* smartcard_channel_client_get_device(SmartCardChannelClient *scc);
+
+int smartcard_channel_client_handle_message(RedChannelClient *rcc,
+ uint16_t type,
+ uint32_t size,
+ uint8_t *msg);
+
+int smartcard_channel_client_handle_migrate_data(RedChannelClient *rcc,
+ uint32_t size,
+ void *message);
+
+void smartcard_channel_client_set_char_device(SmartCardChannelClient *scc,
+ RedCharDeviceSmartcard *device);
+
+RedCharDeviceSmartcard* smartcard_channel_client_get_char_device(SmartCardChannelClient *scc);
+
+void smartcard_channel_client_release_msg_rcv_buf(RedChannelClient *rcc,
+ uint16_t type,
+ uint32_t size,
+ uint8_t *msg);
+
+uint8_t *smartcard_channel_client_alloc_msg_rcv_buf(RedChannelClient *rcc,
+ uint16_t type,
+ uint32_t size);
+
+#endif /* SMARTCARD_CHANNEL_CLIENT_H__ */
diff --git a/server/smartcard.c b/server/smartcard.c
index 41dc106..ab95260 100644
--- a/server/smartcard.c
+++ b/server/smartcard.c
@@ -30,8 +30,8 @@
#include "reds.h"
#include "char-device.h"
-#include "red-channel-client.h"
#include "smartcard.h"
+#include "smartcard-channel-client.h"
#include "migration-protocol.h"
/*
@@ -49,25 +49,6 @@
// Maximal length of APDU
#define APDUBufSize 270
-typedef struct SmartCardChannelClientPrivate SmartCardChannelClientPrivate;
-struct SmartCardChannelClientPrivate {
- RedCharDeviceSmartcard *smartcard;
-
- /* read_from_client/write_to_device buffer.
- * The beginning of the buffer should always be VSCMsgHeader*/
- RedCharDeviceWriteBuffer *write_buf;
- int msg_in_write_buf; /* was the client msg received into a RedCharDeviceWriteBuffer
- * or was it explicitly malloced */
-};
-
-typedef struct SmartCardChannelClient {
- RedChannelClient base;
-
- SmartCardChannelClientPrivate priv[1];
-} SmartCardChannelClient;
-
-#define SMARTCARD_CHANNEL_CLIENT(rcc) ((SmartCardChannelClient*)rcc)
-
G_DEFINE_TYPE(RedCharDeviceSmartcard, red_char_device_smartcard, RED_TYPE_CHAR_DEVICE)
#define RED_CHAR_DEVICE_SMARTCARD_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), RED_TYPE_CHAR_DEVICE_SMARTCARD, RedCharDeviceSmartcardPrivate))
@@ -84,18 +65,6 @@ struct RedCharDeviceSmartcardPrivate {
int reader_added; // has reader_add been sent to the device
};
-enum {
- RED_PIPE_ITEM_TYPE_ERROR = RED_PIPE_ITEM_TYPE_CHANNEL_BASE,
- RED_PIPE_ITEM_TYPE_SMARTCARD_DATA,
- RED_PIPE_ITEM_TYPE_SMARTCARD_MIGRATE_DATA,
-};
-
-typedef struct RedErrorItem {
- RedPipeItem base;
- VSCMsgHeader vheader;
- VSCMsgError error;
-} RedErrorItem;
-
typedef struct RedMsgItem {
RedPipeItem base;
@@ -114,12 +83,7 @@ static struct Readers {
SpiceCharDeviceInstance* sin[SMARTCARD_MAX_READERS];
} g_smartcard_readers = {0, {NULL}};
-static SpiceCharDeviceInstance* smartcard_readers_get_unattached(void);
-static SpiceCharDeviceInstance* smartcard_readers_get(uint32_t reader_id);
static int smartcard_char_device_add_to_readers(RedsState *reds, SpiceCharDeviceInstance *sin);
-static void smartcard_char_device_attach_client(
- SpiceCharDeviceInstance *char_device, SmartCardChannelClient *scc);
-static void smartcard_channel_write_to_reader(RedCharDeviceWriteBuffer *write_buf);
static RedMsgItem *smartcard_char_device_on_message_from_device(
RedCharDeviceSmartcard *dev, VSCMsgHeader *header);
@@ -179,11 +143,12 @@ static void smartcard_send_msg_to_client(RedPipeItem *msg,
void *opaque)
{
RedCharDeviceSmartcard *dev = opaque;
+ RedChannelClient *rcc = RED_CHANNEL_CLIENT(dev->priv->scc);
spice_assert(dev->priv->scc &&
- red_channel_client_get_client(&dev->priv->scc->base) == client);
+ red_channel_client_get_client(rcc) == client);
red_pipe_item_ref(msg);
- smartcard_channel_client_pipe_add_push(&dev->priv->scc->base, msg);
+ smartcard_channel_client_pipe_add_push(rcc, msg);
}
static void smartcard_send_tokens_to_client(RedClient *client, uint32_t tokens, void *opaque)
@@ -194,11 +159,12 @@ static void smartcard_send_tokens_to_client(RedClient *client, uint32_t tokens,
static void smartcard_remove_client(RedClient *client, void *opaque)
{
RedCharDeviceSmartcard *dev = opaque;
+ RedChannelClient *rcc = RED_CHANNEL_CLIENT(dev->priv->scc);
spice_printerr("smartcard dev %p, client %p", dev, client);
spice_assert(dev->priv->scc &&
- red_channel_client_get_client(&dev->priv->scc->base) == client);
- red_channel_client_shutdown(&dev->priv->scc->base);
+ red_channel_client_get_client(rcc) == client);
+ red_channel_client_shutdown(rcc);
}
RedMsgItem *smartcard_char_device_on_message_from_device(RedCharDeviceSmartcard *dev,
@@ -225,7 +191,8 @@ RedMsgItem *smartcard_char_device_on_message_from_device(RedCharDeviceSmartcard
/* We patch the reader_id, since the device only knows about itself, and
* we know about the sum of readers. */
sent_header->reader_id = dev->priv->reader_id;
- return smartcard_get_vsc_msg_item(&dev->priv->scc->base, sent_header);
+ return smartcard_get_vsc_msg_item(RED_CHANNEL_CLIENT(dev->priv->scc),
+ sent_header);
}
return NULL;
}
@@ -243,7 +210,7 @@ static int smartcard_char_device_add_to_readers(RedsState *reds, SpiceCharDevice
return 0;
}
-static SpiceCharDeviceInstance *smartcard_readers_get(uint32_t reader_id)
+SpiceCharDeviceInstance *smartcard_readers_get(uint32_t reader_id)
{
spice_assert(reader_id < g_smartcard_readers.num);
return g_smartcard_readers.sin[reader_id];
@@ -251,7 +218,7 @@ static SpiceCharDeviceInstance *smartcard_readers_get(uint32_t reader_id)
/* TODO: fix implementation for multiple readers. Each reader should have a separated
* channel */
-static SpiceCharDeviceInstance *smartcard_readers_get_unattached(void)
+SpiceCharDeviceInstance *smartcard_readers_get_unattached(void)
{
int i;
RedCharDeviceSmartcard* dev;
@@ -300,7 +267,7 @@ RedCharDevice *smartcard_device_connect(RedsState *reds, SpiceCharDeviceInstance
return RED_CHAR_DEVICE(dev);
}
-static void smartcard_char_device_notify_reader_add(RedCharDeviceSmartcard *dev)
+void smartcard_char_device_notify_reader_add(RedCharDeviceSmartcard *dev)
{
RedCharDeviceWriteBuffer *write_buf;
VSCMsgHeader *vheader;
@@ -318,15 +285,15 @@ static void smartcard_char_device_notify_reader_add(RedCharDeviceSmartcard *dev)
smartcard_channel_write_to_reader(write_buf);
}
-static void smartcard_char_device_attach_client(SpiceCharDeviceInstance *char_device,
- SmartCardChannelClient *scc)
+void smartcard_char_device_attach_client(SpiceCharDeviceInstance *char_device,
+ SmartCardChannelClient *scc)
{
RedCharDeviceSmartcard *dev = red_char_device_opaque_get(char_device->st);
int client_added;
- spice_assert(!scc->priv->smartcard && !dev->priv->scc);
+ spice_assert(!smartcard_channel_client_get_char_device(scc) && !dev->priv->scc);
dev->priv->scc = scc;
- scc->priv->smartcard = dev;
+ smartcard_channel_client_set_char_device(scc, dev);
client_added = red_char_device_client_add(RED_CHAR_DEVICE(dev),
red_channel_client_get_client(RED_CHANNEL_CLIENT(scc)),
FALSE, /* no flow control yet */
@@ -338,24 +305,24 @@ static void smartcard_char_device_attach_client(SpiceCharDeviceInstance *char_de
if (!client_added) {
spice_warning("failed");
dev->priv->scc = NULL;
- scc->priv->smartcard = NULL;
+ smartcard_channel_client_set_char_device(scc, NULL);
red_channel_client_disconnect(RED_CHANNEL_CLIENT(scc));
}
}
-static void smartcard_char_device_notify_reader_remove(RedCharDeviceSmartcard *dev)
+gboolean smartcard_char_device_notify_reader_remove(RedCharDeviceSmartcard *dev)
{
RedCharDeviceWriteBuffer *write_buf;
VSCMsgHeader *vheader;
if (!dev->priv->reader_added) {
spice_debug("reader add was never sent to the device");
- return;
+ return FALSE;
}
write_buf = red_char_device_write_buffer_get(RED_CHAR_DEVICE(dev), NULL, sizeof(*vheader));
if (!write_buf) {
spice_error("failed to allocate write buffer");
- return;
+ return FALSE;
}
dev->priv->reader_added = FALSE;
vheader = (VSCMsgHeader *)write_buf->buf;
@@ -363,21 +330,18 @@ static void smartcard_char_device_notify_reader_remove(RedCharDeviceSmartcard *d
vheader->reader_id = dev->priv->reader_id;
vheader->length = 0;
smartcard_channel_write_to_reader(write_buf);
+
+ return TRUE;
}
-static void smartcard_char_device_detach_client(SmartCardChannelClient *scc)
+void smartcard_char_device_detach_client(RedCharDeviceSmartcard *smartcard,
+ SmartCardChannelClient *scc)
{
- RedCharDeviceSmartcard *dev;
-
- if (!scc->priv->smartcard) {
- return;
- }
- dev = scc->priv->smartcard;
- spice_assert(dev->priv->scc == scc);
- red_char_device_client_remove(RED_CHAR_DEVICE(dev),
+ spice_assert(smartcard->priv->scc == scc);
+ red_char_device_client_remove(RED_CHAR_DEVICE(smartcard),
red_channel_client_get_client(RED_CHANNEL_CLIENT(scc)));
- scc->priv->smartcard = NULL;
- dev->priv->scc = NULL;
+ smartcard_channel_client_set_char_device(scc, NULL);
+ smartcard->priv->scc = NULL;
}
static int smartcard_channel_client_config_socket(RedChannelClient *rcc)
@@ -385,78 +349,9 @@ static int smartcard_channel_client_config_socket(RedChannelClient *rcc)
return TRUE;
}
-static uint8_t *smartcard_channel_alloc_msg_rcv_buf(RedChannelClient *rcc,
- uint16_t type,
- uint32_t size)
+SmartCardChannelClient* smartcard_char_device_get_client(RedCharDeviceSmartcard *smartcard)
{
- SmartCardChannelClient *scc = SMARTCARD_CHANNEL_CLIENT(rcc);
-
- /* todo: only one reader is actually supported. When we fix the code to support
- * multiple readers, we will porbably associate different devices to
- * differenc channels */
- if (!scc->priv->smartcard) {
- scc->priv->msg_in_write_buf = FALSE;
- return spice_malloc(size);
- } else {
- RedCharDeviceSmartcard *dev;
-
- spice_assert(g_smartcard_readers.num == 1);
- dev = scc->priv->smartcard;
- spice_assert(dev->priv->scc || scc->priv->smartcard);
- spice_assert(!scc->priv->write_buf);
- scc->priv->write_buf = red_char_device_write_buffer_get(RED_CHAR_DEVICE(dev),
- red_channel_client_get_client(rcc),
- size);
-
- if (!scc->priv->write_buf) {
- spice_error("failed to allocate write buffer");
- return NULL;
- }
- scc->priv->msg_in_write_buf = TRUE;
- return scc->priv->write_buf->buf;
- }
-}
-
-static void smartcard_channel_release_msg_rcv_buf(RedChannelClient *rcc,
- uint16_t type,
- uint32_t size,
- uint8_t *msg)
-{
- SmartCardChannelClient *scc = SMARTCARD_CHANNEL_CLIENT(rcc);
-
- /* todo: only one reader is actually supported. When we fix the code to support
- * multiple readers, we will porbably associate different devices to
- * differenc channels */
-
- if (!scc->priv->msg_in_write_buf) {
- spice_assert(!scc->priv->write_buf);
- free(msg);
- } else {
- if (scc->priv->write_buf) { /* msg hasn't been pushed to the guest */
- spice_assert(scc->priv->write_buf->buf == msg);
- red_char_device_write_buffer_release(RED_CHAR_DEVICE(scc->priv->smartcard), &scc->priv->write_buf);
- }
- }
-}
-
-static void smartcard_channel_send_data(RedChannelClient *rcc, SpiceMarshaller *m,
- RedPipeItem *item, VSCMsgHeader *vheader)
-{
- spice_assert(rcc);
- spice_assert(vheader);
- red_channel_client_init_send_data(rcc, SPICE_MSG_SMARTCARD_DATA, item);
- spice_marshaller_add_ref(m, (uint8_t*)vheader, sizeof(VSCMsgHeader));
- if (vheader->length > 0) {
- spice_marshaller_add_ref(m, (uint8_t*)(vheader+1), vheader->length);
- }
-}
-
-static void smartcard_channel_send_error(
- RedChannelClient *rcc, SpiceMarshaller *m, RedPipeItem *item)
-{
- RedErrorItem* error_item = SPICE_UPCAST(RedErrorItem, item);
-
- smartcard_channel_send_data(rcc, m, item, &error_item->vheader);
+ return smartcard->priv->scc;
}
static void smartcard_channel_send_msg(RedChannelClient *rcc,
@@ -464,7 +359,7 @@ static void smartcard_channel_send_msg(RedChannelClient *rcc,
{
RedMsgItem* msg_item = SPICE_UPCAST(RedMsgItem, item);
- smartcard_channel_send_data(rcc, m, item, msg_item->vheader);
+ smartcard_channel_client_send_data(rcc, m, item, msg_item->vheader);
}
static void smartcard_channel_send_migrate_data(RedChannelClient *rcc,
@@ -475,7 +370,7 @@ static void smartcard_channel_send_migrate_data(RedChannelClient *rcc,
SpiceMarshaller *m2;
scc = SMARTCARD_CHANNEL_CLIENT(rcc);
- dev = scc->priv->smartcard;
+ dev = smartcard_channel_client_get_char_device(scc);
red_channel_client_init_send_data(rcc, SPICE_MSG_MIGRATE_DATA, item);
spice_marshaller_add_uint32(m, SPICE_MIGRATE_DATA_SMARTCARD_MAGIC);
spice_marshaller_add_uint32(m, SPICE_MIGRATE_DATA_SMARTCARD_VERSION);
@@ -502,7 +397,7 @@ static void smartcard_channel_send_item(RedChannelClient *rcc, RedPipeItem *item
switch (item->type) {
case RED_PIPE_ITEM_TYPE_ERROR:
- smartcard_channel_send_error(rcc, m, item);
+ smartcard_channel_client_send_error(rcc, m, item);
break;
case RED_PIPE_ITEM_TYPE_SMARTCARD_DATA:
smartcard_channel_send_msg(rcc, m, item);
@@ -517,18 +412,6 @@ static void smartcard_channel_send_item(RedChannelClient *rcc, RedPipeItem *item
red_channel_client_begin_send_message(rcc);
}
-static void smartcard_channel_on_disconnect(RedChannelClient *rcc)
-{
- SmartCardChannelClient *scc = SMARTCARD_CHANNEL_CLIENT(rcc);
-
- if (scc->priv->smartcard) {
- RedCharDeviceSmartcard *dev = scc->priv->smartcard;
-
- smartcard_char_device_detach_client(scc);
- smartcard_char_device_notify_reader_remove(dev);
- }
-}
-
/* this is called from both device input and client input. since the device is
* a usb device, the context is still the main thread (kvm_main_loop, timers)
* so no mutex is required. */
@@ -538,19 +421,6 @@ static void smartcard_channel_client_pipe_add_push(RedChannelClient *rcc,
red_channel_client_pipe_add_push(rcc, item);
}
-static void smartcard_push_error(RedChannelClient *rcc, uint32_t reader_id, VSCErrorCode error)
-{
- RedErrorItem *error_item = spice_new0(RedErrorItem, 1);
-
- red_pipe_item_init(&error_item->base, RED_PIPE_ITEM_TYPE_ERROR);
-
- error_item->vheader.reader_id = reader_id;
- error_item->vheader.type = VSC_Error;
- error_item->vheader.length = sizeof(error_item->error);
- error_item->error.code = error;
- smartcard_channel_client_pipe_add_push(rcc, &error_item->base);
-}
-
static void smartcard_free_vsc_msg_item(RedPipeItem *base)
{
RedMsgItem *item = SPICE_UPCAST(RedMsgItem, base);
@@ -569,48 +439,7 @@ static RedMsgItem *smartcard_get_vsc_msg_item(RedChannelClient *rcc,
return msg_item;
}
-static void smartcard_remove_reader(SmartCardChannelClient *scc, uint32_t reader_id)
-{
- SpiceCharDeviceInstance *char_device = smartcard_readers_get(reader_id);
- RedCharDeviceSmartcard *dev;
-
- if (char_device == NULL) {
- smartcard_push_error(RED_CHANNEL_CLIENT(scc), reader_id,
- VSC_GENERAL_ERROR);
- return;
- }
-
- dev = red_char_device_opaque_get(char_device->st);
- if (dev->priv->reader_added == FALSE) {
- smartcard_push_error(RED_CHANNEL_CLIENT(scc), reader_id,
- VSC_GENERAL_ERROR);
- return;
- }
- spice_assert(scc->priv->smartcard == dev);
- smartcard_char_device_notify_reader_remove(dev);
-}
-
-static void smartcard_add_reader(SmartCardChannelClient *scc, uint8_t *name)
-{
- if (!scc->priv->smartcard) { /* we already tried to attach a reader to the client
- when it connected */
- SpiceCharDeviceInstance *char_device = smartcard_readers_get_unattached();
-
- if (!char_device) {
- smartcard_push_error(RED_CHANNEL_CLIENT(scc),
- VSCARD_UNDEFINED_READER_ID,
- VSC_CANNOT_ADD_MORE_READERS);
- return;
- }
- smartcard_char_device_attach_client(char_device, scc);
- }
- smartcard_char_device_notify_reader_add(scc->priv->smartcard);
- // The device sends a VSC_Error message, we will let it through, no
- // need to send our own. We already set the correct reader_id, from
- // our RedCharDeviceSmartcard.
-}
-
-static void smartcard_channel_write_to_reader(RedCharDeviceWriteBuffer *write_buf)
+void smartcard_channel_write_to_reader(RedCharDeviceWriteBuffer *write_buf)
{
SpiceCharDeviceInstance *sin;
RedCharDeviceSmartcard *dev;
@@ -623,7 +452,8 @@ static void smartcard_channel_write_to_reader(RedCharDeviceWriteBuffer *write_bu
spice_assert(vheader->reader_id <= g_smartcard_readers.num);
sin = g_smartcard_readers.sin[vheader->reader_id];
dev = (RedCharDeviceSmartcard *)red_char_device_opaque_get(sin->st);
- spice_assert(!dev->priv->scc || dev == dev->priv->scc->priv->smartcard);
+ spice_assert(!dev->priv->scc ||
+ dev == smartcard_channel_client_get_device(dev->priv->scc));
/* protocol requires messages to be in network endianess */
vheader->type = htonl(vheader->type);
vheader->length = htonl(vheader->length);
@@ -632,15 +462,6 @@ static void smartcard_channel_write_to_reader(RedCharDeviceWriteBuffer *write_bu
/* pushing the buffer to the write queue; It will be released
* when it will be fully consumed by the device */
red_char_device_write_buffer_add(sin->st, write_buf);
- if (dev->priv->scc && write_buf == dev->priv->scc->priv->write_buf) {
- dev->priv->scc->priv->write_buf = NULL;
- }
-}
-
-static int smartcard_channel_client_handle_migrate_flush_mark(RedChannelClient *rcc)
-{
- red_channel_client_pipe_add_type(rcc, RED_PIPE_ITEM_TYPE_SMARTCARD_MIGRATE_DATA);
- return TRUE;
}
static void smartcard_device_restore_partial_read(RedCharDeviceSmartcard *dev,
@@ -660,96 +481,13 @@ static void smartcard_device_restore_partial_read(RedCharDeviceSmartcard *dev,
dev->priv->buf_pos = dev->priv->buf + mig_data->read_size;
}
-static int smartcard_channel_client_handle_migrate_data(RedChannelClient *rcc,
- uint32_t size, void *message)
+int smartcard_char_device_handle_migrate_data(RedCharDeviceSmartcard *smartcard,
+ SpiceMigrateDataSmartcard *mig_data)
{
- SmartCardChannelClient *scc;
- SpiceMigrateDataHeader *header;
- SpiceMigrateDataSmartcard *mig_data;
+ smartcard->priv->reader_added = mig_data->reader_added;
- scc = SMARTCARD_CHANNEL_CLIENT(rcc);
- header = (SpiceMigrateDataHeader *)message;
- mig_data = (SpiceMigrateDataSmartcard *)(header + 1);
- if (size < sizeof(SpiceMigrateDataHeader) + sizeof(SpiceMigrateDataSmartcard)) {
- spice_error("bad message size");
- return FALSE;
- }
- if (!migration_protocol_validate_header(header,
- SPICE_MIGRATE_DATA_SMARTCARD_MAGIC,
- SPICE_MIGRATE_DATA_SMARTCARD_VERSION)) {
- spice_error("bad header");
- return FALSE;
- }
-
- if (!mig_data->base.connected) { /* client wasn't attached to a smartcard */
- return TRUE;
- }
-
- if (!scc->priv->smartcard) {
- SpiceCharDeviceInstance *char_device = smartcard_readers_get_unattached();
-
- if (!char_device) {
- spice_warning("no unattached device available");
- return TRUE;
- } else {
- smartcard_char_device_attach_client(char_device, scc);
- }
- }
- spice_debug("reader added %d partial read_size %u", mig_data->reader_added, mig_data->read_size);
- scc->priv->smartcard->priv->reader_added = mig_data->reader_added;
-
- smartcard_device_restore_partial_read(scc->priv->smartcard, mig_data);
- return red_char_device_restore(RED_CHAR_DEVICE(scc->priv->smartcard), &mig_data->base);
-}
-
-static int smartcard_channel_handle_message(RedChannelClient *rcc,
- uint16_t type,
- uint32_t size,
- uint8_t *msg)
-{
- VSCMsgHeader* vheader = (VSCMsgHeader*)msg;
- SmartCardChannelClient *scc = SMARTCARD_CHANNEL_CLIENT(rcc);
-
- if (type != SPICE_MSGC_SMARTCARD_DATA) {
- /* Handles seamless migration protocol. Also handles ack's,
- * spicy sends them while spicec does not */
- return red_channel_client_handle_message(rcc, size, type, msg);
- }
-
- spice_assert(size == vheader->length + sizeof(VSCMsgHeader));
- switch (vheader->type) {
- case VSC_ReaderAdd:
- smartcard_add_reader(scc, msg + sizeof(VSCMsgHeader));
- return TRUE;
- break;
- case VSC_ReaderRemove:
- smartcard_remove_reader(scc, vheader->reader_id);
- return TRUE;
- break;
- case VSC_Init:
- // ignore - we should never get this anyway
- return TRUE;
- break;
- case VSC_Error:
- case VSC_ATR:
- case VSC_CardRemove:
- case VSC_APDU:
- break; // passed on to device
- default:
- printf("ERROR: unexpected message on smartcard channel\n");
- return TRUE;
- }
-
- /* todo: fix */
- if (vheader->reader_id >= g_smartcard_readers.num) {
- spice_printerr("ERROR: received message for non existing reader: %d, %d, %d", vheader->reader_id,
- vheader->type, vheader->length);
- return FALSE;
- }
- spice_assert(scc->priv->write_buf->buf == msg);
- smartcard_channel_write_to_reader(scc->priv->write_buf);
-
- return TRUE;
+ smartcard_device_restore_partial_read(smartcard, mig_data);
+ return red_char_device_restore(RED_CHAR_DEVICE(smartcard), &mig_data->base);
}
static void smartcard_connect_client(RedChannel *channel, RedClient *client,
@@ -769,6 +507,7 @@ static void smartcard_connect_client(RedChannel *channel, RedClient *client,
FALSE,
num_common_caps, common_caps,
num_caps, caps));
+
if (!scc) {
return;
}
@@ -792,10 +531,10 @@ static void smartcard_init(RedsState *reds)
spice_assert(!g_smartcard_channel);
channel_cbs.config_socket = smartcard_channel_client_config_socket;
- channel_cbs.on_disconnect = smartcard_channel_on_disconnect;
+ channel_cbs.on_disconnect = smartcard_channel_client_on_disconnect;
channel_cbs.send_item = smartcard_channel_send_item;
- channel_cbs.alloc_recv_buf = smartcard_channel_alloc_msg_rcv_buf;
- channel_cbs.release_recv_buf = smartcard_channel_release_msg_rcv_buf;
+ channel_cbs.alloc_recv_buf = smartcard_channel_client_alloc_msg_rcv_buf;
+ channel_cbs.release_recv_buf = smartcard_channel_client_release_msg_rcv_buf;
channel_cbs.handle_migrate_flush_mark = smartcard_channel_client_handle_migrate_flush_mark;
channel_cbs.handle_migrate_data = smartcard_channel_client_handle_migrate_data;
@@ -804,7 +543,7 @@ static void smartcard_init(RedsState *reds)
reds_get_core_interface(reds),
SPICE_CHANNEL_SMARTCARD, 0,
FALSE /* handle_acks */,
- smartcard_channel_handle_message,
+ smartcard_channel_client_handle_message,
&channel_cbs,
migration_flags);
@@ -826,7 +565,7 @@ red_char_device_smartcard_finalize(GObject *object)
free(self->priv->buf);
if (self->priv->scc) {
- self->priv->scc->priv->smartcard = NULL;
+ smartcard_channel_client_set_char_device(self->priv->scc, NULL);
}
G_OBJECT_CLASS(red_char_device_smartcard_parent_class)->finalize(object);
@@ -858,3 +597,8 @@ red_char_device_smartcard_init(RedCharDeviceSmartcard *self)
self->priv->buf = spice_malloc(self->priv->buf_size);
self->priv->buf_pos = self->priv->buf;
}
+
+uint32_t smartcard_get_n_readers(void)
+{
+ return g_smartcard_readers.num;
+}
diff --git a/server/smartcard.h b/server/smartcard.h
index 2d1356e..e3932c0 100644
--- a/server/smartcard.h
+++ b/server/smartcard.h
@@ -21,6 +21,7 @@
#include <glib-object.h>
#include "char-device.h"
+#include "red-channel-client.h"
#define RED_TYPE_CHAR_DEVICE_SMARTCARD red_char_device_smartcard_get_type()
@@ -33,6 +34,7 @@
typedef struct RedCharDeviceSmartcard RedCharDeviceSmartcard;
typedef struct RedCharDeviceSmartcardClass RedCharDeviceSmartcardClass;
typedef struct RedCharDeviceSmartcardPrivate RedCharDeviceSmartcardPrivate;
+typedef struct SmartCardChannelClient SmartCardChannelClient;
struct RedCharDeviceSmartcard
{
@@ -53,5 +55,24 @@ GType red_char_device_smartcard_get_type(void) G_GNUC_CONST;
*/
RedCharDevice *smartcard_device_connect(RedsState *reds, SpiceCharDeviceInstance *char_device);
void smartcard_device_disconnect(SpiceCharDeviceInstance *char_device);
+void smartcard_channel_write_to_reader(RedCharDeviceWriteBuffer *write_buf);
+SpiceCharDeviceInstance* smartcard_readers_get(uint32_t reader_id);
+SpiceCharDeviceInstance *smartcard_readers_get_unattached(void);
+uint32_t smartcard_get_n_readers(void);
+void smartcard_char_device_notify_reader_add(RedCharDeviceSmartcard *smartcard);
+void smartcard_char_device_attach_client(SpiceCharDeviceInstance *smartcard,
+ SmartCardChannelClient *scc);
+gboolean smartcard_char_device_notify_reader_remove(RedCharDeviceSmartcard *smartcard);
+void smartcard_char_device_detach_client(RedCharDeviceSmartcard *smartcard,
+ SmartCardChannelClient *scc);
+SmartCardChannelClient* smartcard_char_device_get_client(RedCharDeviceSmartcard *smartcard);
+int smartcard_char_device_handle_migrate_data(RedCharDeviceSmartcard *smartcard,
+ SpiceMigrateDataSmartcard *mig_data);
+
+enum {
+ RED_PIPE_ITEM_TYPE_ERROR = RED_PIPE_ITEM_TYPE_CHANNEL_BASE,
+ RED_PIPE_ITEM_TYPE_SMARTCARD_DATA,
+ RED_PIPE_ITEM_TYPE_SMARTCARD_MIGRATE_DATA,
+};
#endif // __SMART_CARD_H__
--
2.7.4
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