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/*
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
xrdp: A Remote Desktop Protocol server.
Copyright (C) Jay Sorg 2004
tcp layer
*/
#include "xrdp.h"
/*****************************************************************************/
struct xrdp_tcp* xrdp_tcp_create(struct xrdp_iso* owner)
{
struct xrdp_tcp* self;
self = (struct xrdp_tcp*)g_malloc(sizeof(struct xrdp_tcp), 1);
self->iso_layer = owner;
/* get sck from xrdp_process */
self->sck = owner->mcs_layer->sec_layer->rdp_layer->pro_layer->sck;
return self;
}
/*****************************************************************************/
void xrdp_tcp_delete(struct xrdp_tcp* self)
{
g_free(self);
}
/*****************************************************************************/
/* get out stream ready for data */
/* returns error */
int xrdp_tcp_init(struct xrdp_tcp* self, struct stream* s)
{
init_stream(s, 8192);
return 0;
}
/*****************************************************************************/
/* returns error */
int xrdp_tcp_recv(struct xrdp_tcp* self, struct stream* s, int len)
{
int rcvd;
DEBUG((" in xrdp_tcp_recv, gota get %d bytes\n", len))
init_stream(s, len);
while (len > 0)
{
if (g_is_term())
return 1;
rcvd = g_tcp_recv(self->sck, s->end, len, 0);
if (rcvd == -1)
{
if (g_tcp_last_error_would_block(self->sck))
g_sleep(1);
else
{
DEBUG((" error = -1 in xrdp_tcp_recv socket %d\n", self->sck))
return 1;
}
}
else if (rcvd == 0)
{
DEBUG((" error = 0 in xrdp_tcp_recv socket %d\n", self->sck))
return 1;
}
else
{
s->end += rcvd;
len -= rcvd;
}
}
return 0;
}
/*****************************************************************************/
/* returns error */
int xrdp_tcp_send(struct xrdp_tcp* self, struct stream* s)
{
int len;
int total;
int sent;
len = s->end - s->data;
DEBUG((" in xrdp_tcp_send, gota send %d bytes\n\r", len))
total = 0;
while (total < len)
{
if (g_is_term())
return 1;
sent = g_tcp_send(self->sck, s->data + total, len - total, 0);
if (sent == -1)
{
if (g_tcp_last_error_would_block(self->sck))
g_sleep(1);
else
{
DEBUG((" error = -1 in xrdp_tcp_send socket %d\n\r", self->sck))
return 1;
}
}
else if (sent == 0)
{
DEBUG((" error = 0 in xrdp_tcp_send socket %d\n\r", self->sck))
return 1;
}
else
total = total + sent;
}
DEBUG((" out xrdp_tcp_send, sent %d bytes ok\n\r", len))
return 0;
}
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