trunk/rdesktop/channels.c

/* -*- c-basic-offset: 8 -*-
   rdesktop: A Remote Desktop Protocol client.
   Protocol services - Channel register
   Copyright (C) Erik Forsberg <forsberg@cendio.se> 2003

   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.
*/

#include "rdesktop.h"

static uint16 num_channels;
static rdp5_channel *channels[MAX_RDP5_CHANNELS];

uint16
get_num_channels(void)
{
        return num_channels;
}

void
register_channel(char *name, uint32 flags, void (*callback) (STREAM, uint16))
{
        if (num_channels > MAX_RDP5_CHANNELS)
        {
                error("Maximum number of RDP5 channels reached. Redefine MAX_RDP5_CHANNELS in constants.h and recompile!\n!");
        }
        num_channels++;
        channels[num_channels - 1] = xrealloc(channels[num_channels - 1],
                                              sizeof(rdp5_channel) * num_channels);
        channels[num_channels - 1]->channelno = MCS_GLOBAL_CHANNEL + num_channels;
        strcpy(channels[num_channels - 1]->name, name);
        channels[num_channels - 1]->channelflags = flags;
        channels[num_channels - 1]->channelcallback = callback;
}

rdp5_channel *
find_channel_by_channelno(uint16 channelno)
{
        if (channelno > MCS_GLOBAL_CHANNEL + num_channels)
        {
                warning("Channel %d not defined. Highest channel defined is %d\n",
                        channelno, MCS_GLOBAL_CHANNEL + num_channels);
                return NULL;
        }
        else
        {
                return channels[channelno - MCS_GLOBAL_CHANNEL - 1];
        }
}

rdp5_channel *
find_channel_by_num(uint16 num)
{
        if (num > num_channels)
        {
                error("There are only %d channels defined, channel %d doesn't exist\n",
                      num_channels, num);
        }
        else
        {
                return channels[num];
        }
        return NULL;            // Shut the compiler up
}


void
dummy_callback(STREAM s, uint16 channelno)
{
        warning("Server is sending information on our dummy channel (%d). Why?\n", channelno);
}

void
channels_init(void)
{
        DEBUG_RDP5(("channels_init\n"));
        register_channel("dummych", 0xc0a0, dummy_callback);
        register_channel("cliprdr", 0xc0a0, cliprdr_callback);
}
1	/* -- c-basic-offset: 8 --
2	rdesktop: A Remote Desktop Protocol client.
3	Protocol services - Channel register
4	Copyright (C) Erik Forsberg <forsberg@cendio.se> 2003
5
6	This program is free software; you can redistribute it and/or modify
7	it under the terms of the GNU General Public License as published by
8	the Free Software Foundation; either version 2 of the License, or
9	(at your option) any later version.
10
11	This program is distributed in the hope that it will be useful,
12	but WITHOUT ANY WARRANTY; without even the implied warranty of
13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14	GNU General Public License for more details.
15
16	You should have received a copy of the GNU General Public License
17	along with this program; if not, write to the Free Software
18	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19	*/
20
21	#include "rdesktop.h"
22
23	static uint16 num_channels;
24	static rdp5_channel *channels[MAX_RDP5_CHANNELS];
25
26	uint16
27	get_num_channels(void)
28	{
29	return num_channels;
30	}
31
32	void
33	register_channel(char name, uint32 flags, void (callback) (STREAM, uint16))
34	{
35	if (num_channels > MAX_RDP5_CHANNELS)
36	{
37	error("Maximum number of RDP5 channels reached. Redefine MAX_RDP5_CHANNELS in constants.h and recompile!\n!");
38	}
39	num_channels++;
40	channels[num_channels - 1] = xrealloc(channels[num_channels - 1],
41	sizeof(rdp5_channel) * num_channels);
42	channels[num_channels - 1]->channelno = MCS_GLOBAL_CHANNEL + num_channels;
43	strcpy(channels[num_channels - 1]->name, name);
44	channels[num_channels - 1]->channelflags = flags;
45	channels[num_channels - 1]->channelcallback = callback;
46	}
47
48	rdp5_channel *
49	find_channel_by_channelno(uint16 channelno)
50	{
51	if (channelno > MCS_GLOBAL_CHANNEL + num_channels)
52	{
53	warning("Channel %d not defined. Highest channel defined is %d\n",
54	channelno, MCS_GLOBAL_CHANNEL + num_channels);
55	return NULL;
56	}
57	else
58	{
59	return channels[channelno - MCS_GLOBAL_CHANNEL - 1];
60	}
61	}
62
63	rdp5_channel *
64	find_channel_by_num(uint16 num)
65	{
66	if (num > num_channels)
67	{
68	error("There are only %d channels defined, channel %d doesn't exist\n",
69	num_channels, num);
70	}
71	else
72	{
73	return channels[num];
74	}
75	return NULL; // Shut the compiler up
76	}
77
78
79
80	void
81	dummy_callback(STREAM s, uint16 channelno)
82	{
83	warning("Server is sending information on our dummy channel (%d). Why?\n", channelno);
84	}
85
86	void
87	channels_init(void)
88	{
89	DEBUG_RDP5(("channels_init\n"));
90	register_channel("dummych", 0xc0a0, dummy_callback);
91	register_channel("cliprdr", 0xc0a0, cliprdr_callback);
92	}