2005-10-12 05:32:19 +04:00
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/*
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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xrdp: A Remote Desktop Protocol server.
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Copyright (C) Jay Sorg 2005
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librdp tcp layer
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*/
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#include "rdp.h"
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/*****************************************************************************/
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struct rdp_tcp* APP_CC
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rdp_tcp_create(struct rdp_iso* owner)
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{
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struct rdp_tcp* self;
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self = (struct rdp_tcp*)g_malloc(sizeof(struct rdp_tcp), 1);
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self->iso_layer = owner;
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return self;
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}
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/*****************************************************************************/
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void APP_CC
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rdp_tcp_delete(struct rdp_tcp* self)
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{
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g_free(self);
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}
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/*****************************************************************************/
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/* get out stream ready for data */
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/* returns error */
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int APP_CC
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rdp_tcp_init(struct rdp_tcp* self, struct stream* s)
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{
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init_stream(s, 8192);
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return 0;
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}
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/*****************************************************************************/
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/* returns error */
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int APP_CC
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rdp_tcp_recv(struct rdp_tcp* self, struct stream* s, int len)
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{
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int rcvd;
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2005-11-03 05:01:50 +03:00
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DEBUG((" in rdp_tcp_recv gota get %d bytes on sck %d\r\n",
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len, self->sck));
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2005-10-12 05:32:19 +04:00
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if (self->sck_closed)
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{
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2005-11-03 05:01:50 +03:00
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DEBUG((" out rdp_tcp_recv error sck closed\r\n"));
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2005-10-12 05:32:19 +04:00
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return 1;
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}
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init_stream(s, len);
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while (len > 0)
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{
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rcvd = g_tcp_recv(self->sck, s->end, len, 0);
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if (rcvd == -1)
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{
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if (g_tcp_last_error_would_block(self->sck))
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{
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g_sleep(1);
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}
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else
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{
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self->sck_closed = 1;
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2005-11-03 05:01:50 +03:00
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DEBUG((" out rdp_tcp_recv error unknown\r\n"));
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2005-10-12 05:32:19 +04:00
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return 1;
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}
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}
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else if (rcvd == 0)
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{
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self->sck_closed = 1;
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2005-11-03 05:01:50 +03:00
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DEBUG((" out rdp_tcp_recv error connection dropped\r\n"));
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2005-10-12 05:32:19 +04:00
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return 1;
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}
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else
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{
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s->end += rcvd;
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len -= rcvd;
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}
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}
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return 0;
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}
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/*****************************************************************************/
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/* returns error */
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int APP_CC
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rdp_tcp_send(struct rdp_tcp* self, struct stream* s)
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{
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int len;
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int total;
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int sent;
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if (self->sck_closed)
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{
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2005-11-03 05:01:50 +03:00
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DEBUG((" out rdp_tcp_send error sck closed\r\n"));
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2005-10-12 05:32:19 +04:00
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return 1;
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}
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len = s->end - s->data;
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2005-11-03 05:01:50 +03:00
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DEBUG((" in rdp_tcp_send gota send %d bytes on sck %d\r\n", len,
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self->sck));
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2005-10-12 05:32:19 +04:00
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total = 0;
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while (total < len)
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{
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sent = g_tcp_send(self->sck, s->data + total, len - total, 0);
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if (sent == -1)
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{
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if (g_tcp_last_error_would_block(self->sck))
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{
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g_sleep(1);
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}
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else
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{
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self->sck_closed = 1;
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2005-11-03 05:01:50 +03:00
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DEBUG((" out rdp_tcp_send error unknown\r\n"));
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2005-10-12 05:32:19 +04:00
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return 1;
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}
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}
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else if (sent == 0)
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{
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self->sck_closed = 1;
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2005-11-03 05:01:50 +03:00
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DEBUG((" out rdp_tcp_send error connection dropped\r\n"));
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2005-10-12 05:32:19 +04:00
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return 1;
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}
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else
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{
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total = total + sent;
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}
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}
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return 0;
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}
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/*****************************************************************************/
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/* returns error */
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int APP_CC
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rdp_tcp_connect(struct rdp_tcp* self, char* ip, char* port)
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{
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2005-11-03 05:01:50 +03:00
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DEBUG((" in rdp_tcp_connect ip %s port %s\r\n", ip, port));
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2005-10-12 05:32:19 +04:00
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self->sck = g_tcp_socket();
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if (g_tcp_connect(self->sck, ip, port) == 0)
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{
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g_tcp_set_non_blocking(self->sck);
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}
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else
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{
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2005-11-03 05:01:50 +03:00
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DEBUG((" out rdp_tcp_connect error g_tcp_connect failed\r\n"));
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2005-10-12 05:32:19 +04:00
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return 1;
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}
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2005-11-03 05:01:50 +03:00
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DEBUG((" out rdp_tcp_connect\r\n"));
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2005-10-12 05:32:19 +04:00
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return 0;
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}
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/*****************************************************************************/
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/* returns error */
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int APP_CC
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rdp_tcp_disconnect(struct rdp_tcp* self)
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{
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if (self->sck != 0)
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{
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g_tcp_close(self->sck);
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}
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self->sck = 0;
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return 0;
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}
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