/* false return signals GAChannel to close the current client connection */
static gboolean channel_event_cb(GIOCondition condition, gpointer data)
{
GAState *s = data;
gchar buf[QGA_READ_COUNT_DEFAULT+1];
gsize count;
GIOStatus status = ga_channel_read(s->channel, buf, QGA_READ_COUNT_DEFAULT, &count);
switch (status) {
case G_IO_STATUS_ERROR:
g_warning("error reading channel");
return false;
case G_IO_STATUS_NORMAL:
buf[count] = 0;
g_debug("read data, count: %d, data: %s", (int)count, buf);
json_message_parser_feed(&s->parser, (char *)buf, (int)count);
break;
case G_IO_STATUS_EOF:
g_debug("received EOF");
if (!s->virtio) {
return false;
}
/* fall through */
case G_IO_STATUS_AGAIN:
/* virtio causes us to spin here when no process is attached to
* host-side chardev. sleep a bit to mitigate this
*/
if (s->virtio) {
usleep(100*1000);
}
return true;
default:
g_warning("unknown channel read status, closing");
return false;
}
return true;
}
QObject *qobject_from_jsonv(const char *string, va_list *ap)
{
JSONParsingState state = {};
state.ap = ap;
json_message_parser_init(&state.parser, parse_json);
json_message_parser_feed(&state.parser, string, strlen(string));
json_message_parser_flush(&state.parser);
json_message_parser_destroy(&state.parser);
return state.result;
}
static gboolean conn_channel_read(GIOChannel *channel, GIOCondition condition,
gpointer data)
{
GAState *s = data;
gchar buf[1024];
gsize count;
GError *err = NULL;
memset(buf, 0, 1024);
GIOStatus status = g_io_channel_read_chars(channel, buf, 1024,
&count, &err);
if (err != NULL) {
g_warning("error reading channel: %s", err->message);
conn_channel_close(s);
g_error_free(err);
return false;
}
switch (status) {
case G_IO_STATUS_ERROR:
g_warning("problem");
return false;
case G_IO_STATUS_NORMAL:
g_debug("read data, count: %d, data: %s", (int)count, buf);
json_message_parser_feed(&s->parser, (char *)buf, (int)count);
case G_IO_STATUS_AGAIN:
/* virtio causes us to spin here when no process is attached to
* host-side chardev. sleep a bit to mitigate this
*/
if (s->virtio) {
usleep(100*1000);
}
return true;
case G_IO_STATUS_EOF:
g_debug("received EOF");
conn_channel_close(s);
if (s->virtio) {
return true;
}
return false;
default:
g_warning("unknown channel read status, closing");
conn_channel_close(s);
return false;
}
return true;
}
