147 lines
3.5 KiB
C
147 lines
3.5 KiB
C
/*
|
|
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 2004-2005
|
|
|
|
tcp layer
|
|
|
|
*/
|
|
|
|
#include "libxrdp.h"
|
|
|
|
/*****************************************************************************/
|
|
struct xrdp_tcp* APP_CC
|
|
xrdp_tcp_create(struct xrdp_iso* owner, int sck)
|
|
{
|
|
struct xrdp_tcp* self;
|
|
|
|
self = (struct xrdp_tcp*)g_malloc(sizeof(struct xrdp_tcp), 1);
|
|
self->iso_layer = owner;
|
|
self->sck = sck;
|
|
return self;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
void APP_CC
|
|
xrdp_tcp_delete(struct xrdp_tcp* self)
|
|
{
|
|
g_free(self);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/* get out stream ready for data */
|
|
/* returns error */
|
|
int APP_CC
|
|
xrdp_tcp_init(struct xrdp_tcp* self, struct stream* s)
|
|
{
|
|
init_stream(s, 8192);
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/* returns error */
|
|
int APP_CC
|
|
xrdp_tcp_recv(struct xrdp_tcp* self, struct stream* s, int len)
|
|
{
|
|
int rcvd;
|
|
|
|
if (self->sck_closed)
|
|
{
|
|
DEBUG((" in xrdp_tcp_recv, sck closed\n\r"));
|
|
return 1;
|
|
}
|
|
DEBUG((" in xrdp_tcp_recv, gota get %d bytes\n\r", len));
|
|
init_stream(s, len);
|
|
while (len > 0)
|
|
{
|
|
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
|
|
{
|
|
self->sck_closed = 1;
|
|
DEBUG((" error = -1 in xrdp_tcp_recv socket %d\n\r", self->sck));
|
|
return 1;
|
|
}
|
|
}
|
|
else if (rcvd == 0)
|
|
{
|
|
self->sck_closed = 1;
|
|
DEBUG((" error = 0 in xrdp_tcp_recv socket %d\n\r", self->sck));
|
|
return 1;
|
|
}
|
|
else
|
|
{
|
|
s->end += rcvd;
|
|
len -= rcvd;
|
|
}
|
|
}
|
|
DEBUG((" out xrdp_tcp_recv\n\r"));
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/* returns error */
|
|
int APP_CC
|
|
xrdp_tcp_send(struct xrdp_tcp* self, struct stream* s)
|
|
{
|
|
int len;
|
|
int total;
|
|
int sent;
|
|
|
|
if (self->sck_closed)
|
|
{
|
|
DEBUG((" in xrdp_tcp_send, sck closed\n\r"));
|
|
return 1;
|
|
}
|
|
len = s->end - s->data;
|
|
DEBUG((" in xrdp_tcp_send, gota send %d bytes\n\r", len));
|
|
total = 0;
|
|
while (total < len)
|
|
{
|
|
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
|
|
{
|
|
self->sck_closed = 1;
|
|
DEBUG((" error = -1 in xrdp_tcp_send socket %d\n\r", self->sck));
|
|
return 1;
|
|
}
|
|
}
|
|
else if (sent == 0)
|
|
{
|
|
self->sck_closed = 1;
|
|
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;
|
|
}
|