[PATCH 3/3] Smartcard: store channel in device

[Jonathon Jongsma <jjongsma@xxxxxxxxxx>]

Commit 542bc478 removed the global smartcard channel, but never stored the
newly-created channel anywhere. To avoid leaking the channel, store the channel
as a private member of the device it is associated with. It will be unreffed
when its associated device is destroyed.
---
 server/smartcard.c | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/server/smartcard.c b/server/smartcard.c
index 5b18abe..bc1ada4 100644
--- a/server/smartcard.c
+++ b/server/smartcard.c
@@ -115,6 +115,7 @@ struct RedCharDeviceSmartcardPrivate {
 
     SmartCardChannelClient    *scc; // client providing the remote card
     int                  reader_added; // has reader_add been sent to the device
+    RedSmartcardChannel *channel;
 };
 
 typedef struct RedMsgItem {
@@ -136,7 +137,6 @@ static int smartcard_char_device_add_to_readers(RedsState *reds, SpiceCharDevice
 static RedMsgItem *smartcard_char_device_on_message_from_device(
     RedCharDeviceSmartcard *dev, VSCMsgHeader *header);
 static RedCharDeviceSmartcard *smartcard_device_new(RedsState *reds, SpiceCharDeviceInstance *sin);
-static void smartcard_init(RedsState *reds);
 
 static void smartcard_read_buf_prepare(RedCharDeviceSmartcard *dev, VSCMsgHeader *vheader)
 {
@@ -256,7 +256,7 @@ static int smartcard_char_device_add_to_readers(RedsState *reds, SpiceCharDevice
     }
     dev->priv->reader_id = g_smartcard_readers.num;
     g_smartcard_readers.sin[g_smartcard_readers.num++] = char_device;
-    smartcard_init(reds);
+    dev->priv->channel = red_smartcard_channel_new(reds);
     return 0;
 }
 
@@ -602,13 +602,15 @@ red_smartcard_channel_class_init(RedSmartcardChannelClass *klass)
 
 }
 
-static void smartcard_init(RedsState *reds)
+static void
+red_char_device_smartcard_dispose(GObject *object)
 {
-    spice_assert(!reds_find_channel(reds, SPICE_CHANNEL_SMARTCARD, 0));
+    RedCharDeviceSmartcard *self = RED_CHAR_DEVICE_SMARTCARD(object);
 
-    red_smartcard_channel_new(reds);
-}
+    g_clear_object(&self->priv->channel);
 
+    G_OBJECT_CLASS(red_char_device_smartcard_parent_class)->dispose(object);
+}
 
 static void
 red_char_device_smartcard_finalize(GObject *object)
@@ -628,6 +630,7 @@ red_char_device_smartcard_class_init(RedCharDeviceSmartcardClass *klass)
 
     g_type_class_add_private(klass, sizeof (RedCharDeviceSmartcardPrivate));
 
+    object_class->dispose = red_char_device_smartcard_dispose;
     object_class->finalize = red_char_device_smartcard_finalize;
 
     char_dev_class->read_one_msg_from_device = smartcard_read_msg_from_device;
-- 
2.7.4

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