@@ -111,7 +111,8 @@ size_t vnc_client_write_sasl(VncState *vs)
g_source_remove(vs->ioc_tag);
}
vs->ioc_tag = qio_channel_add_watch(
- vs->ioc, G_IO_IN, vnc_client_io, vs, NULL);
+ vs->ioc, G_IO_IN | G_IO_HUP | G_IO_ERR,
+ vnc_client_io, vs, NULL);
}
return ret;
@@ -79,7 +79,8 @@ static void vnc_tls_handshake_done(QIOTask *task,
g_source_remove(vs->ioc_tag);
}
vs->ioc_tag = qio_channel_add_watch(
- vs->ioc, G_IO_IN | G_IO_OUT, vnc_client_io, vs, NULL);
+ vs->ioc, G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_OUT,
+ vnc_client_io, vs, NULL);
start_auth_vencrypt_subauth(vs);
}
}
@@ -151,7 +151,8 @@ void vnc_jobs_consume_buffer(VncState *vs)
}
if (vs->disconnecting == FALSE) {
vs->ioc_tag = qio_channel_add_watch(
- vs->ioc, G_IO_IN | G_IO_OUT, vnc_client_io, vs, NULL);
+ vs->ioc, G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_OUT,
+ vnc_client_io, vs, NULL);
}
}
buffer_move(&vs->output, &vs->jobs_buffer);
@@ -41,13 +41,14 @@ static void vncws_tls_handshake_done(QIOTask *task,
g_source_remove(vs->ioc_tag);
}
vs->ioc_tag = qio_channel_add_watch(
- QIO_CHANNEL(vs->ioc), G_IO_IN, vncws_handshake_io, vs, NULL);
+ QIO_CHANNEL(vs->ioc), G_IO_IN | G_IO_HUP | G_IO_ERR,
+ vncws_handshake_io, vs, NULL);
}
}
gboolean vncws_tls_handshake_io(QIOChannel *ioc G_GNUC_UNUSED,
- GIOCondition condition G_GNUC_UNUSED,
+ GIOCondition condition,
void *opaque)
{
VncState *vs = opaque;
@@ -59,6 +60,11 @@ gboolean vncws_tls_handshake_io(QIOChannel *ioc G_GNUC_UNUSED,
vs->ioc_tag = 0;
}
+ if (condition & (G_IO_HUP | G_IO_ERR)) {
+ vnc_client_error(vs);
+ return TRUE;
+ }
+
tls = qio_channel_tls_new_server(
vs->ioc,
vs->vd->tlscreds,
@@ -105,13 +111,14 @@ static void vncws_handshake_done(QIOTask *task,
g_source_remove(vs->ioc_tag);
}
vs->ioc_tag = qio_channel_add_watch(
- vs->ioc, G_IO_IN, vnc_client_io, vs, NULL);
+ vs->ioc, G_IO_IN | G_IO_HUP | G_IO_ERR,
+ vnc_client_io, vs, NULL);
}
}
gboolean vncws_handshake_io(QIOChannel *ioc G_GNUC_UNUSED,
- GIOCondition condition G_GNUC_UNUSED,
+ GIOCondition condition,
void *opaque)
{
VncState *vs = opaque;
@@ -122,6 +129,11 @@ gboolean vncws_handshake_io(QIOChannel *ioc G_GNUC_UNUSED,
vs->ioc_tag = 0;
}
+ if (condition & (G_IO_HUP | G_IO_ERR)) {
+ vnc_client_error(vs);
+ return TRUE;
+ }
+
wioc = qio_channel_websock_new_server(vs->ioc);
qio_channel_set_name(QIO_CHANNEL(wioc), "vnc-ws-server-websock");
@@ -1398,7 +1398,8 @@ static size_t vnc_client_write_plain(VncState *vs)
g_source_remove(vs->ioc_tag);
}
vs->ioc_tag = qio_channel_add_watch(
- vs->ioc, G_IO_IN, vnc_client_io, vs, NULL);
+ vs->ioc, G_IO_IN | G_IO_HUP | G_IO_ERR,
+ vnc_client_io, vs, NULL);
}
return ret;
@@ -1435,7 +1436,8 @@ static void vnc_client_write(VncState *vs)
g_source_remove(vs->ioc_tag);
}
vs->ioc_tag = qio_channel_add_watch(
- vs->ioc, G_IO_IN, vnc_client_io, vs, NULL);
+ vs->ioc, G_IO_IN | G_IO_HUP | G_IO_ERR,
+ vnc_client_io, vs, NULL);
}
vnc_unlock_output(vs);
}
@@ -1551,6 +1553,12 @@ gboolean vnc_client_io(QIOChannel *ioc G_GNUC_UNUSED,
VncState *vs = opaque;
assert(vs->magic == VNC_MAGIC);
+
+ if (condition & (G_IO_HUP | G_IO_ERR)) {
+ vnc_disconnect_start(vs);
+ return TRUE;
+ }
+
if (condition & G_IO_IN) {
if (vnc_client_read(vs) < 0) {
/* vs is free()ed here */
@@ -1612,7 +1620,8 @@ void vnc_write(VncState *vs, const void *data, size_t len)
g_source_remove(vs->ioc_tag);
}
vs->ioc_tag = qio_channel_add_watch(
- vs->ioc, G_IO_IN | G_IO_OUT, vnc_client_io, vs, NULL);
+ vs->ioc, G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_OUT,
+ vnc_client_io, vs, NULL);
}
buffer_append(&vs->output, data, len);
@@ -3077,14 +3086,17 @@ static void vnc_connect(VncDisplay *vd, QIOChannelSocket *sioc,
vs->websocket = 1;
if (vd->tlscreds) {
vs->ioc_tag = qio_channel_add_watch(
- vs->ioc, G_IO_IN, vncws_tls_handshake_io, vs, NULL);
+ vs->ioc, G_IO_IN | G_IO_HUP | G_IO_ERR,
+ vncws_tls_handshake_io, vs, NULL);
} else {
vs->ioc_tag = qio_channel_add_watch(
- vs->ioc, G_IO_IN, vncws_handshake_io, vs, NULL);
+ vs->ioc, G_IO_IN | G_IO_HUP | G_IO_ERR,
+ vncws_handshake_io, vs, NULL);
}
} else {
vs->ioc_tag = qio_channel_add_watch(
- vs->ioc, G_IO_IN, vnc_client_io, vs, NULL);
+ vs->ioc, G_IO_IN | G_IO_HUP | G_IO_ERR,
+ vnc_client_io, vs, NULL);
}
vnc_client_cache_addr(vs);
When we connect to vnc by websocket channel, and disconnect (maybe by some network exception) before handshake, qemu will left CLOSE_WAIT socket and never close it After 04d2529da2 ("ui: convert VNC server to use QIOChannelSocket") and dd154c4d9f ("io: fix handling of EOF / error conditions in websock GSource"), the vnc call qio_channel_add_watch only care about G_IO_IN, but mising G_IO_HUP and G_IO_ERR. When the websocket channel get EOF or error, it cannot callback, because the caller ignore the event, that leads to resource leak We need handle G_IO_HUP and G_IO_ERR event, then cleanup the channel Fixes: 04d2529da2 ("ui: convert VNC server to use QIOChannelSocket") Fixes: dd154c4d9f ("io: fix handling of EOF / error conditions in websock GSource") Cc: qemu-stable@nongnu.org Signed-off-by: Ding Hui <dinghui@sangfor.com.cn> --- ui/vnc-auth-sasl.c | 3 ++- ui/vnc-auth-vencrypt.c | 3 ++- ui/vnc-jobs.c | 3 ++- ui/vnc-ws.c | 20 ++++++++++++++++---- ui/vnc.c | 24 ++++++++++++++++++------ 5 files changed, 40 insertions(+), 13 deletions(-)