o moved from GNU General Public License to Apache License, Version 2.0
o applied new coding standards to all .c files o moved some files around
This commit is contained in:
Laxmikant Rashinkar
+129
-117
@@ -1,24 +1,22 @@
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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 2006-2010
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channel layer
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*/
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/**
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* xrdp: A Remote Desktop Protocol server.
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*
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* Copyright (C) Jay Sorg 2006-2012
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* channel layer
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*/
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#include "libxrdp.h"
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@@ -31,86 +29,96 @@
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/*****************************************************************************/
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/* returns pointer or nil on error */
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static struct mcs_channel_item* APP_CC
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xrdp_channel_get_item(struct xrdp_channel* self, int channel_id)
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static struct mcs_channel_item *APP_CC
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xrdp_channel_get_item(struct xrdp_channel *self, int channel_id)
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{
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struct mcs_channel_item* channel;
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if(self->mcs_layer->channel_list==NULL)
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{
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g_writeln("xrdp_channel_get_item - No channel initialized");
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return NULL ;
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}
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channel = (struct mcs_channel_item*)
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list_get_item(self->mcs_layer->channel_list, channel_id);
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return channel;
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struct mcs_channel_item *channel;
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if (self->mcs_layer->channel_list == NULL)
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{
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g_writeln("xrdp_channel_get_item - No channel initialized");
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return NULL ;
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}
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channel = (struct mcs_channel_item *)
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list_get_item(self->mcs_layer->channel_list, channel_id);
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return channel;
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}
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/*****************************************************************************/
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struct xrdp_channel* APP_CC
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xrdp_channel_create(struct xrdp_sec* owner, struct xrdp_mcs* mcs_layer)
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struct xrdp_channel *APP_CC
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xrdp_channel_create(struct xrdp_sec *owner, struct xrdp_mcs *mcs_layer)
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{
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struct xrdp_channel* self;
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struct xrdp_channel *self;
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self = (struct xrdp_channel*)g_malloc(sizeof(struct xrdp_channel), 1);
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self->sec_layer = owner;
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self->mcs_layer = mcs_layer;
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return self;
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self = (struct xrdp_channel *)g_malloc(sizeof(struct xrdp_channel), 1);
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self->sec_layer = owner;
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self->mcs_layer = mcs_layer;
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return self;
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}
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/*****************************************************************************/
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/* returns error */
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void APP_CC
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xrdp_channel_delete(struct xrdp_channel* self)
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xrdp_channel_delete(struct xrdp_channel *self)
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{
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if (self == 0)
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{
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return;
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}
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g_memset(self,0,sizeof(struct xrdp_channel));
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g_free(self);
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if (self == 0)
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{
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return;
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}
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g_memset(self, 0, sizeof(struct xrdp_channel));
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g_free(self);
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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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xrdp_channel_init(struct xrdp_channel* self, struct stream* s)
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xrdp_channel_init(struct xrdp_channel *self, struct stream *s)
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{
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if (xrdp_sec_init(self->sec_layer, s) != 0)
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{
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return 1;
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}
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s_push_layer(s, channel_hdr, 8);
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return 0;
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if (xrdp_sec_init(self->sec_layer, s) != 0)
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{
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return 1;
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}
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s_push_layer(s, channel_hdr, 8);
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return 0;
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}
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/*****************************************************************************/
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/* returns error */
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/* This sends data out to the secure layer. */
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int APP_CC
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xrdp_channel_send(struct xrdp_channel* self, struct stream* s, int channel_id,
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xrdp_channel_send(struct xrdp_channel *self, struct stream *s, int channel_id,
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int total_data_len, int flags)
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{
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struct mcs_channel_item* channel;
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struct mcs_channel_item *channel;
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channel = xrdp_channel_get_item(self, channel_id);
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if (channel == NULL)
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{
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g_writeln("xrdp_channel_send - no such channel");
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return 1;
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}
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s_pop_layer(s, channel_hdr);
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out_uint32_le(s, total_data_len);
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if (channel->flags & XR_CHANNEL_OPTION_SHOW_PROTOCOL)
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{
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flags |= CHANNEL_FLAG_SHOW_PROTOCOL;
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}
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out_uint32_le(s, flags);
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if (xrdp_sec_send(self->sec_layer, s, channel->chanid) != 0)
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{
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g_writeln("xrdp_channel_send - failure sending data");
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return 1;
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}
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return 0;
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channel = xrdp_channel_get_item(self, channel_id);
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if (channel == NULL)
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{
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g_writeln("xrdp_channel_send - no such channel");
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return 1;
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}
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s_pop_layer(s, channel_hdr);
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out_uint32_le(s, total_data_len);
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if (channel->flags & XR_CHANNEL_OPTION_SHOW_PROTOCOL)
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{
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flags |= CHANNEL_FLAG_SHOW_PROTOCOL;
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}
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out_uint32_le(s, flags);
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if (xrdp_sec_send(self->sec_layer, s, channel->chanid) != 0)
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{
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g_writeln("xrdp_channel_send - failure sending data");
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return 1;
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}
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return 0;
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}
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/*****************************************************************************/
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@@ -118,36 +126,38 @@ xrdp_channel_send(struct xrdp_channel* self, struct stream* s, int channel_id,
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/* this will inform the callback, whatever it is that some channel data is
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ready. the default for this is a call to xrdp_wm.c. */
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static int APP_CC
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xrdp_channel_call_callback(struct xrdp_channel* self, struct stream* s,
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xrdp_channel_call_callback(struct xrdp_channel *self, struct stream *s,
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int channel_id,
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int total_data_len, int flags)
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{
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struct xrdp_session* session;
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int rv;
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int size;
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struct xrdp_session *session;
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int rv;
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int size;
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rv = 0;
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session = self->sec_layer->rdp_layer->session;
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if (session != 0)
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{
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if (session->callback != 0)
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rv = 0;
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session = self->sec_layer->rdp_layer->session;
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if (session != 0)
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{
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size = (int)(s->end - s->p);
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/* in xrdp_wm.c */
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rv = session->callback(session->id, 0x5555,
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MAKELONG(channel_id, flags),
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size, (tbus)(s->p), total_data_len);
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if (session->callback != 0)
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{
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size = (int)(s->end - s->p);
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/* in xrdp_wm.c */
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rv = session->callback(session->id, 0x5555,
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MAKELONG(channel_id, flags),
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size, (tbus)(s->p), total_data_len);
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}
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else
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{
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g_writeln("in xrdp_channel_call_callback, session->callback is nil");
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}
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}
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else
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{
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g_writeln("in xrdp_channel_call_callback, session->callback is nil");
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g_writeln("in xrdp_channel_call_callback, session is nil");
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}
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}
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else
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{
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g_writeln("in xrdp_channel_call_callback, session is nil");
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}
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return rv;
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return rv;
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}
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/*****************************************************************************/
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@@ -157,30 +167,32 @@ xrdp_channel_call_callback(struct xrdp_channel* self, struct stream* s,
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'chanid' passed in here is the mcs channel id so it MCS_GLOBAL_CHANNEL
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plus something. */
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int APP_CC
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xrdp_channel_process(struct xrdp_channel* self, struct stream* s,
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xrdp_channel_process(struct xrdp_channel *self, struct stream *s,
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int chanid)
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{
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int length;
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int flags;
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int rv;
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int channel_id;
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struct mcs_channel_item* channel;
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int length;
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int flags;
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int rv;
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int channel_id;
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struct mcs_channel_item *channel;
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/* this assumes that the channels are in order of chanid(mcs channel id)
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but they should be, see xrdp_sec_process_mcs_data_channels
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the first channel should be MCS_GLOBAL_CHANNEL + 1, second
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one should be MCS_GLOBAL_CHANNEL + 2, and so on */
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channel_id = (chanid - MCS_GLOBAL_CHANNEL) - 1;
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channel = xrdp_channel_get_item(self, channel_id);
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if (channel == NULL)
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{
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g_writeln("xrdp_channel_process, channel not found");
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return 1;
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}
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rv = 0;
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in_uint32_le(s, length);
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in_uint32_le(s, flags);
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rv = xrdp_channel_call_callback(self, s, channel_id, length, flags);
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return rv;
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/* this assumes that the channels are in order of chanid(mcs channel id)
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but they should be, see xrdp_sec_process_mcs_data_channels
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the first channel should be MCS_GLOBAL_CHANNEL + 1, second
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one should be MCS_GLOBAL_CHANNEL + 2, and so on */
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channel_id = (chanid - MCS_GLOBAL_CHANNEL) - 1;
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channel = xrdp_channel_get_item(self, channel_id);
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if (channel == NULL)
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{
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g_writeln("xrdp_channel_process, channel not found");
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return 1;
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}
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rv = 0;
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in_uint32_le(s, length);
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in_uint32_le(s, flags);
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rv = xrdp_channel_call_callback(self, s, channel_id, length, flags);
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return rv;
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}
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