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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 2005
librdp tcp layer
*/
#include "rdp.h"
/*****************************************************************************/
struct rdp_tcp* APP_CC
rdp_tcp_create(struct rdp_iso* owner)
{
struct rdp_tcp* self;
self = (struct rdp_tcp*)g_malloc(sizeof(struct rdp_tcp), 1);
self->iso_layer = owner;
return self;
}
/*****************************************************************************/
void APP_CC
rdp_tcp_delete(struct rdp_tcp* self)
{
g_free(self);
}
/*****************************************************************************/
/* get out stream ready for data */
/* returns error */
int APP_CC
rdp_tcp_init(struct rdp_tcp* self, struct stream* s)
{
init_stream(s, 8192);
return 0;
}
/*****************************************************************************/
/* returns error */
int APP_CC
rdp_tcp_recv(struct rdp_tcp* self, struct stream* s, int len)
{
int rcvd;
DEBUG((" in rdp_tcp_recv gota get %d bytes on sck %d\r\n",
len, self->sck));
if (self->sck_closed)
{
DEBUG((" out rdp_tcp_recv error sck closed\r\n"));
return 1;
}
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((" out rdp_tcp_recv error unknown\r\n"));
return 1;
}
}
else if (rcvd == 0)
{
self->sck_closed = 1;
DEBUG((" out rdp_tcp_recv error connection dropped\r\n"));
return 1;
}
else
{
s->end += rcvd;
len -= rcvd;
}
}
return 0;
}
/*****************************************************************************/
/* returns error */
int APP_CC
rdp_tcp_send(struct rdp_tcp* self, struct stream* s)
{
int len;
int total;
int sent;
if (self->sck_closed)
{
DEBUG((" out rdp_tcp_send error sck closed\r\n"));
return 1;
}
len = s->end - s->data;
DEBUG((" in rdp_tcp_send gota send %d bytes on sck %d\r\n", len,
self->sck));
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((" out rdp_tcp_send error unknown\r\n"));
return 1;
}
}
else if (sent == 0)
{
self->sck_closed = 1;
DEBUG((" out rdp_tcp_send error connection dropped\r\n"));
return 1;
}
else
{
total = total + sent;
}
}
return 0;
}
/*****************************************************************************/
/* returns error */
int APP_CC
rdp_tcp_connect(struct rdp_tcp* self, char* ip, char* port)
{
DEBUG((" in rdp_tcp_connect ip %s port %s\r\n", ip, port));
self->sck = g_tcp_socket();
if (g_tcp_connect(self->sck, ip, port) == 0)
{
g_tcp_set_non_blocking(self->sck);
}
else
{
DEBUG((" out rdp_tcp_connect error g_tcp_connect failed\r\n"));
return 1;
}
DEBUG((" out rdp_tcp_connect\r\n"));
return 0;
}
/*****************************************************************************/
/* returns error */
int APP_CC
rdp_tcp_disconnect(struct rdp_tcp* self)
{
if (self->sck != 0)
{
g_tcp_close(self->sck);
}
self->sck = 0;
return 0;
}
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