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/* -*- Mode: C; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
Copyright (C) 2010 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/>.
*/
#include "spice-client.h"
#include "spice-common.h"
#include "spice-session-priv.h"
#include "spice-channel-priv.h"
/* coroutine context */
G_GNUC_INTERNAL
void spice_channel_handle_set_ack(SpiceChannel *channel, SpiceMsgIn *in)
{
SpiceChannelPrivate *c = channel->priv;
SpiceMsgSetAck* ack = spice_msg_in_parsed(in);
SpiceMsgOut *out = spice_msg_out_new(channel, SPICE_MSGC_ACK_SYNC);
SpiceMsgcAckSync sync = {
.generation = ack->generation,
};
c->message_ack_window = c->message_ack_count = ack->window;
c->marshallers->msgc_ack_sync(out->marshaller, &sync);
spice_msg_out_send_internal(out);
}
/* coroutine context */
G_GNUC_INTERNAL
void spice_channel_handle_ping(SpiceChannel *channel, SpiceMsgIn *in)
{
SpiceChannelPrivate *c = channel->priv;
SpiceMsgPing *ping = spice_msg_in_parsed(in);
SpiceMsgOut *pong = spice_msg_out_new(channel, SPICE_MSGC_PONG);
c->marshallers->msgc_pong(pong->marshaller, ping);
spice_msg_out_send_internal(pong);
}
/* coroutine context */
G_GNUC_INTERNAL
void spice_channel_handle_notify(SpiceChannel *channel, SpiceMsgIn *in)
{
SpiceChannelPrivate *c = channel->priv;
static const char* severity_strings[] = {"info", "warn", "error"};
static const char* visibility_strings[] = {"!", "!!", "!!!"};
SpiceMsgNotify *notify = spice_msg_in_parsed(in);
const char *severity = "?";
const char *visibility = "?";
const char *message_str = NULL;
if (notify->severity <= SPICE_NOTIFY_SEVERITY_ERROR) {
severity = severity_strings[notify->severity];
}
if (notify->visibilty <= SPICE_NOTIFY_VISIBILITY_HIGH) {
visibility = visibility_strings[notify->visibilty];
}
if (notify->message_len &&
notify->message_len <= in->dpos - sizeof(*notify)) {
message_str = (char*)notify->message;
}
SPICE_DEBUG("%s: channel %s -- %s%s #%u%s%.*s", __FUNCTION__,
c->name, severity, visibility, notify->what,
message_str ? ": " : "", notify->message_len,
message_str ? message_str : "");
}
/* coroutine context */
G_GNUC_INTERNAL
void spice_channel_handle_disconnect(SpiceChannel *channel, SpiceMsgIn *in)
{
SpiceMsgDisconnect *disconnect = spice_msg_in_parsed(in);
SPICE_DEBUG("%s: ts: %" PRIu64", reason: %u", __FUNCTION__,
disconnect->time_stamp, disconnect->reason);
}
typedef struct WaitForChannelData
{
SpiceWaitForChannel *wait;
SpiceChannel *channel;
} WaitForChannelData;
/* coroutine and main context */
static gboolean wait_for_channel(gpointer data)
{
WaitForChannelData *wfc = data;
SpiceChannelPrivate *c = wfc->channel->priv;
SpiceChannel *wait_channel;
wait_channel = spice_session_lookup_channel(c->session, wfc->wait->channel_id, wfc->wait->channel_type);
g_return_val_if_fail(wait_channel != NULL, TRUE);
if (wait_channel->priv->last_message_serial >= wfc->wait->message_serial)
return TRUE;
return FALSE;
}
/* coroutine context */
G_GNUC_INTERNAL
void spice_channel_handle_wait_for_channels(SpiceChannel *channel, SpiceMsgIn *in)
{
SpiceChannelPrivate *c = channel->priv;
SpiceMsgWaitForChannels *wfc = spice_msg_in_parsed(in);
int i;
for (i = 0; i < wfc->wait_count; ++i) {
WaitForChannelData data = {
.wait = wfc->wait_list + i,
.channel = channel
};
SPICE_DEBUG("waiting for serial %" PRIu64 " (%d/%d)", data.wait->message_serial, i + 1, wfc->wait_count);
if (g_coroutine_condition_wait(&c->coroutine, wait_for_channel, &data))
SPICE_DEBUG("waiting for serial %" PRIu64 ", done", data.wait->message_serial);
else
SPICE_DEBUG("waiting for serial %" PRIu64 ", cancelled", data.wait->message_serial);
}
}
static void
get_msg_handler(SpiceChannel *channel, SpiceMsgIn *in, gpointer data)
{
SpiceMsgIn **msg = data;
g_return_if_fail(msg != NULL);
g_return_if_fail(*msg == NULL);
spice_msg_in_ref(in);
*msg = in;
}
/* coroutine context */
G_GNUC_INTERNAL
void spice_channel_handle_migrate(SpiceChannel *channel, SpiceMsgIn *in)
{
SpiceMsgOut *out;
SpiceMsgIn *data = NULL;
SpiceMsgMigrate *mig = spice_msg_in_parsed(in);
SpiceChannelPrivate *c = channel->priv;
SPICE_DEBUG("%s: channel %s flags %u", __FUNCTION__, c->name, mig->flags);
if (mig->flags & SPICE_MIGRATE_NEED_FLUSH) {
/* if peer version > 1: pushing the mark msg before all other messgages and sending it,
* and only it */
if (c->peer_hdr.major_version == 1) {
/* iterate_write is blocking and flushing all pending write */
SPICE_CHANNEL_GET_CLASS(channel)->iterate_write(channel);
}
out = spice_msg_out_new(SPICE_CHANNEL(channel), SPICE_MSGC_MIGRATE_FLUSH_MARK);
spice_msg_out_send_internal(out);
}
if (mig->flags & SPICE_MIGRATE_NEED_DATA_TRANSFER) {
spice_channel_recv_msg(channel, get_msg_handler, &data);
if (!data) {
g_warning("expected SPICE_MSG_MIGRATE_DATA, got empty message");
} else if (spice_header_get_msg_type(data->header, c->use_mini_header) !=
SPICE_MSG_MIGRATE_DATA) {
g_warning("expected SPICE_MSG_MIGRATE_DATA, got %d",
spice_header_get_msg_type(data->header, c->use_mini_header));
}
}
/* swapping channels sockets */
spice_session_channel_migrate(c->session, channel);
/* pushing the MIGRATE_DATA before all other pending messages */
if ((mig->flags & SPICE_MIGRATE_NEED_DATA_TRANSFER) && (data != NULL)) {
out = spice_msg_out_new(SPICE_CHANNEL(channel), SPICE_MSGC_MIGRATE_DATA);
spice_marshaller_add(out->marshaller, data->data,
spice_header_get_msg_size(data->header, c->use_mini_header));
spice_msg_out_send_internal(out);
}
}
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