static void ycht_packet_send_write_cb(gpointer data, gint source, PurpleInputCondition cond)
{
YchtConn *ycht = data;
int ret, writelen;
const gchar *output = NULL;
writelen = purple_circular_buffer_get_max_read(ycht->txbuf);
if (writelen == 0) {
purple_input_remove(ycht->tx_handler);
ycht->tx_handler = 0;
return;
}
output = purple_circular_buffer_get_output(ycht->txbuf);
ret = write(ycht->fd, output, writelen);
if (ret < 0 && errno == EAGAIN)
return;
else if (ret <= 0) {
/* TODO: error handling */
/*
gchar *tmp = g_strdup_printf(_("Lost connection with server: %s"),
g_strerror(errno));
purple_connection_error(purple_account_get_connection(irc->account),
PURPLE_CONNECTION_ERROR_NETWORK_ERROR, tmp);
g_free(tmp);
*/
return;
}
purple_circular_buffer_mark_read(ycht->txbuf, ret);
}
static gboolean
purple_circular_buffer_real_mark_read(PurpleCircularBuffer *buffer,
gsize len)
{
PurpleCircularBufferPrivate *priv = NULL;
GObject *obj;
g_return_val_if_fail(purple_circular_buffer_get_max_read(buffer) >= len, FALSE);
priv = PURPLE_CIRCULAR_BUFFER_GET_PRIVATE(buffer);
priv->output += len;
priv->bufused -= len;
/* wrap to the start if we're at the end */
if ((gsize)(priv->output - priv->buffer) == priv->buflen)
priv->output = priv->buffer;
obj = G_OBJECT(buffer);
g_object_freeze_notify(obj);
g_object_notify_by_pspec(obj, properties[PROP_BUFFER_USED]);
g_object_notify_by_pspec(obj, properties[PROP_OUTPUT]);
g_object_thaw_notify(obj);
return TRUE;
}
/**
* @param source When this function is called as a callback source is
* set to the fd that triggered the callback. But this function
* is also called directly from flap_connection_send_byte_stream(),
* in which case source will be -1. So don't use source--use
* conn->gsc or conn->fd instead.
*/
static void
send_cb(gpointer data, gint source, PurpleInputCondition cond)
{
FlapConnection *conn;
int writelen, ret;
const gchar *output = NULL;
conn = data;
writelen = purple_circular_buffer_get_max_read(conn->buffer_outgoing);
output = purple_circular_buffer_get_output(conn->buffer_outgoing);
if (writelen == 0)
{
purple_input_remove(conn->watcher_outgoing);
conn->watcher_outgoing = 0;
return;
}
if (conn->gsc)
ret = purple_ssl_write(conn->gsc, output, writelen);
else
ret = send(conn->fd, output, writelen, 0);
if (ret <= 0)
{
if (ret < 0 && (errno == EAGAIN || errno == EWOULDBLOCK))
/* No worries */
return;
/* Error! */
purple_input_remove(conn->watcher_outgoing);
conn->watcher_outgoing = 0;
if (conn->gsc) {
purple_ssl_close(conn->gsc);
conn->gsc = NULL;
} else {
close(conn->fd);
conn->fd = -1;
}
flap_connection_schedule_destroy(conn,
OSCAR_DISCONNECT_LOST_CONNECTION, g_strerror(errno));
return;
}
purple_circular_buffer_mark_read(conn->buffer_outgoing, ret);
}
static void
send_cb(gpointer data, gint source, PurpleInputCondition cond)
{
PeerConnection *conn;
gsize writelen;
gssize wrotelen;
const gchar *output = NULL;
conn = data;
writelen = purple_circular_buffer_get_max_read(conn->buffer_outgoing);
if (writelen == 0)
{
purple_input_remove(conn->watcher_outgoing);
conn->watcher_outgoing = 0;
/*
* The buffer is currently empty, so reset the current input
* and output positions to the start of the buffer. We do
* this so that the next chunk of data that we put into the
* buffer can be read back out of the buffer in one fell swoop.
* Otherwise it gets fragmented and we have to read from the
* second half of the buffer than go back and read the rest of
* the chunk from the first half.
*
* We're using TCP, which is a stream based protocol, so this
* isn't supposed to matter. However, experience has shown
* that at least the proxy file transfer code in AIM 6.1.41.2
* requires that the entire OFT frame arrive all at once. If
* the frame is fragmented then AIM freaks out and aborts the
* file transfer. Somebody should teach those guys how to
* write good TCP code.
*/
purple_circular_buffer_reset(conn->buffer_outgoing);
return;
}
output = purple_circular_buffer_get_output(conn->buffer_outgoing);
wrotelen = send(conn->fd, output, writelen, 0);
if (wrotelen <= 0)
{
if (wrotelen < 0 && ((errno == EAGAIN) || (errno == EWOULDBLOCK)))
/* No worries */
return;
if (conn->ready)
{
purple_input_remove(conn->watcher_outgoing);
conn->watcher_outgoing = 0;
close(conn->fd);
conn->fd = -1;
peer_connection_schedule_destroy(conn,
OSCAR_DISCONNECT_LOST_CONNECTION, NULL);
}
else
{
/*
* This could happen when unable to send a negotiation
* frame to a peer proxy server.
*/
peer_connection_trynext(conn);
}
return;
}
purple_circular_buffer_mark_read(conn->buffer_outgoing, wrotelen);
conn->lastactivity = time(NULL);
}
