added files from rdesktop

uirdesktop/channels.c

@@ -0,0 +1,181 @@
+/* -*- c-basic-offset: 8 -*-
+   rdesktop: A Remote Desktop Protocol client.
+   Protocol services - Virtual channels
+   Copyright (C) Erik Forsberg <forsberg@cendio.se> 2003
+   Copyright (C) Matthew Chapman 2003-2005
+
+   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"
+
+#define MAX_CHANNELS			6
+#define CHANNEL_CHUNK_LENGTH		1600
+#define CHANNEL_FLAG_FIRST		0x01
+#define CHANNEL_FLAG_LAST		0x02
+#define CHANNEL_FLAG_SHOW_PROTOCOL	0x10
+
+extern BOOL g_use_rdp5;
+extern BOOL g_encryption;
+
+VCHANNEL g_channels[MAX_CHANNELS];
+unsigned int g_num_channels;
+
+/* FIXME: We should use the information in TAG_SRV_CHANNELS to map RDP5
+   channels to MCS channels.
+
+   The format of TAG_SRV_CHANNELS seems to be
+
+   global_channel_no (uint16le)
+   number_of_other_channels (uint16le)
+   ..followed by uint16les for the other channels.
+*/
+
+VCHANNEL *
+channel_register(char *name, uint32 flags, void (*callback) (STREAM))
+{
+	VCHANNEL *channel;
+
+	if (!g_use_rdp5)
+		return NULL;
+
+	if (g_num_channels >= MAX_CHANNELS)
+	{
+		error("Channel table full, increase MAX_CHANNELS\n");
+		return NULL;
+	}
+
+	channel = &g_channels[g_num_channels];
+	channel->mcs_id = MCS_GLOBAL_CHANNEL + 1 + g_num_channels;
+	strncpy(channel->name, name, 8);
+	channel->flags = flags;
+	channel->process = callback;
+	g_num_channels++;
+	return channel;
+}
+
+STREAM
+channel_init(VCHANNEL * channel, uint32 length)
+{
+	STREAM s;
+
+	s = sec_init(g_encryption ? SEC_ENCRYPT : 0, length + 8);
+	s_push_layer(s, channel_hdr, 8);
+	return s;
+}
+
+void
+channel_send(STREAM s, VCHANNEL * channel)
+{
+	uint32 length, flags;
+	uint32 thislength, remaining;
+	uint8 *data;
+
+	/* first fragment sent in-place */
+	s_pop_layer(s, channel_hdr);
+	length = s->end - s->p - 8;
+
+	DEBUG_CHANNEL(("channel_send, length = %d\n", length));
+
+	thislength = MIN(length, CHANNEL_CHUNK_LENGTH);
+/* Note: In the original clipboard implementation, this number was
+   1592, not 1600. However, I don't remember the reason and 1600 seems
+   to work so.. This applies only to *this* length, not the length of
+   continuation or ending packets. */
+	remaining = length - thislength;
+	flags = (remaining == 0) ? CHANNEL_FLAG_FIRST | CHANNEL_FLAG_LAST : CHANNEL_FLAG_FIRST;
+	if (channel->flags & CHANNEL_OPTION_SHOW_PROTOCOL)
+		flags |= CHANNEL_FLAG_SHOW_PROTOCOL;
+
+	out_uint32_le(s, length);
+	out_uint32_le(s, flags);
+	data = s->end = s->p + thislength;
+	DEBUG_CHANNEL(("Sending %d bytes with FLAG_FIRST\n", thislength));
+	sec_send_to_channel(s, g_encryption ? SEC_ENCRYPT : 0, channel->mcs_id);
+
+	/* subsequent segments copied (otherwise would have to generate headers backwards) */
+	while (remaining > 0)
+	{
+		thislength = MIN(remaining, CHANNEL_CHUNK_LENGTH);
+		remaining -= thislength;
+		flags = (remaining == 0) ? CHANNEL_FLAG_LAST : 0;
+		if (channel->flags & CHANNEL_OPTION_SHOW_PROTOCOL)
+			flags |= CHANNEL_FLAG_SHOW_PROTOCOL;
+
+		DEBUG_CHANNEL(("Sending %d bytes with flags %d\n", thislength, flags));
+
+		s = sec_init(g_encryption ? SEC_ENCRYPT : 0, thislength + 8);
+		out_uint32_le(s, length);
+		out_uint32_le(s, flags);
+		out_uint8p(s, data, thislength);
+		s_mark_end(s);
+		sec_send_to_channel(s, g_encryption ? SEC_ENCRYPT : 0, channel->mcs_id);
+
+		data += thislength;
+	}
+}
+
+void
+channel_process(STREAM s, uint16 mcs_channel)
+{
+	uint32 length, flags;
+	uint32 thislength;
+	VCHANNEL *channel = NULL;
+	unsigned int i;
+	STREAM in;
+
+	for (i = 0; i < g_num_channels; i++)
+	{
+		channel = &g_channels[i];
+		if (channel->mcs_id == mcs_channel)
+			break;
+	}
+
+	if (i >= g_num_channels)
+		return;
+
+	in_uint32_le(s, length);
+	in_uint32_le(s, flags);
+	if ((flags & CHANNEL_FLAG_FIRST) && (flags & CHANNEL_FLAG_LAST))
+	{
+		/* single fragment - pass straight up */
+		channel->process(s);
+	}
+	else
+	{
+		/* add fragment to defragmentation buffer */
+		in = &channel->in;
+		if (flags & CHANNEL_FLAG_FIRST)
+		{
+			if (length > in->size)
+			{
+				in->data = (uint8 *) xrealloc(in->data, length);
+				in->size = length;
+			}
+			in->p = in->data;
+		}
+
+		thislength = MIN(s->end - s->p, in->data + in->size - in->p);
+		memcpy(in->p, s->p, thislength);
+		in->p += thislength;
+
+		if (flags & CHANNEL_FLAG_LAST)
+		{
+			in->end = in->p;
+			in->p = in->data;
+			channel->process(in);
+		}
+	}
+}

uirdesktop/rdesktop.h

@@ -0,0 +1,119 @@
+/*
+   rdesktop: A Remote Desktop Protocol client.
+   Master include file
+   Copyright (C) Matthew Chapman 1999-2005
+   
+   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 <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <dirent.h>
+#include <sys/time.h>
+#ifdef HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#else
+#include <sys/types.h>
+#include <unistd.h>
+#endif
+#include <limits.h>		/* PATH_MAX */
+
+#define VERSION "1.4.1"
+
+#ifdef WITH_DEBUG
+#define DEBUG(args)	printf args;
+#else
+#define DEBUG(args)
+#endif
+
+#ifdef WITH_DEBUG_KBD
+#define DEBUG_KBD(args) printf args;
+#else
+#define DEBUG_KBD(args)
+#endif
+
+#ifdef WITH_DEBUG_RDP5
+#define DEBUG_RDP5(args) printf args;
+#else
+#define DEBUG_RDP5(args)
+#endif
+
+#ifdef WITH_DEBUG_CLIPBOARD
+#define DEBUG_CLIPBOARD(args) printf args;
+#else
+#define DEBUG_CLIPBOARD(args)
+#endif
+
+#ifdef WITH_DEBUG_CHANNEL
+#define DEBUG_CHANNEL(args) printf args;
+#else
+#define DEBUG_CHANNEL(args)
+#endif
+
+#define STRNCPY(dst,src,n)	{ strncpy(dst,src,n-1); dst[n-1] = 0; }
+
+#ifndef MIN
+#define MIN(x,y)		(((x) < (y)) ? (x) : (y))
+#endif
+
+#ifndef MAX
+#define MAX(x,y)		(((x) > (y)) ? (x) : (y))
+#endif
+
+/* timeval macros */
+#ifndef timerisset
+#define timerisset(tvp)\
+         ((tvp)->tv_sec || (tvp)->tv_usec)
+#endif
+#ifndef timercmp
+#define timercmp(tvp, uvp, cmp)\
+        ((tvp)->tv_sec cmp (uvp)->tv_sec ||\
+        (tvp)->tv_sec == (uvp)->tv_sec &&\
+        (tvp)->tv_usec cmp (uvp)->tv_usec)
+#endif
+#ifndef timerclear
+#define timerclear(tvp)\
+        ((tvp)->tv_sec = (tvp)->tv_usec = 0)
+#endif
+
+/* If configure does not define the endianess, try
+   to find it out */
+#if !defined(L_ENDIAN) && !defined(B_ENDIAN)
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+#define L_ENDIAN
+#elif __BYTE_ORDER == __BIG_ENDIAN
+#define B_ENDIAN
+#else
+#error Unknown endianness. Edit rdesktop.h.
+#endif
+#endif /* B_ENDIAN, L_ENDIAN from configure */
+
+/* No need for alignment on x86 and amd64 */
+#if !defined(NEED_ALIGN)
+#if !(defined(__x86__) || defined(__x86_64__) || \
+      defined(__AMD64__) || defined(_M_IX86) || \
+      defined(__i386__))
+#define NEED_ALIGN
+#endif
+#endif
+
+#include "parse.h"
+#include "constants.h"
+#include "types.h"
+
+#ifndef MAKE_PROTO
+#include "proto.h"
+#endif

uirdesktop/rdp5.c

@@ -0,0 +1,121 @@
+/* -*- c-basic-offset: 8 -*-
+   rdesktop: A Remote Desktop Protocol client.
+   Protocol services - RDP5 short form PDU processing
+   Copyright (C) Matthew Chapman 1999-2005
+   Copyright (C) Erik Forsberg 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"
+
+extern uint8 *g_next_packet;
+
+extern RDPCOMP g_mppc_dict;
+
+void
+rdp5_process(STREAM s)
+{
+	uint16 length, count, x, y;
+	uint8 type, ctype;
+	uint8 *next;
+
+	uint32 roff, rlen;
+	struct stream *ns = &(g_mppc_dict.ns);
+	struct stream *ts;
+
+#if 0
+	printf("RDP5 data:\n");
+	hexdump(s->p, s->end - s->p);
+#endif
+
+	ui_begin_update();
+	while (s->p < s->end)
+	{
+		in_uint8(s, type);
+		if (type & RDP5_COMPRESSED)
+		{
+			in_uint8(s, ctype);
+			in_uint16_le(s, length);
+			type ^= RDP5_COMPRESSED;
+		}
+		else
+		{
+			ctype = 0;
+			in_uint16_le(s, length);
+		}
+		g_next_packet = next = s->p + length;
+
+		if (ctype & RDP_MPPC_COMPRESSED)
+		{
+			if (mppc_expand(s->p, length, ctype, &roff, &rlen) == -1)
+				error("error while decompressing packet\n");
+
+			/* allocate memory and copy the uncompressed data into the temporary stream */
+			ns->data = (uint8 *) xrealloc(ns->data, rlen);
+
+			memcpy((ns->data), (unsigned char *) (g_mppc_dict.hist + roff), rlen);
+
+			ns->size = rlen;
+			ns->end = (ns->data + ns->size);
+			ns->p = ns->data;
+			ns->rdp_hdr = ns->p;
+
+			ts = ns;
+		}
+		else
+			ts = s;
+
+		switch (type)
+		{
+			case 0:	/* update orders */
+				in_uint16_le(ts, count);
+				process_orders(ts, count);
+				break;
+			case 1:	/* update bitmap */
+				in_uint8s(ts, 2);	/* part length */
+				process_bitmap_updates(ts);
+				break;
+			case 2:	/* update palette */
+				in_uint8s(ts, 2);	/* uint16 = 2 */
+				process_palette(ts);
+				break;
+			case 3:	/* update synchronize */
+				break;
+			case 5:	/* null pointer */
+				ui_set_null_cursor();
+				break;
+			case 6:	/* default pointer */
+				break;
+			case 8:	/* pointer position */
+				in_uint16_le(ts, x);
+				in_uint16_le(ts, y);
+				if (s_check(ts))
+					ui_move_pointer(x, y);
+				break;
+			case 9:	/* color pointer */
+				process_colour_pointer_pdu(ts);
+				break;
+			case 10:	/* cached pointer */
+				process_cached_pointer_pdu(ts);
+				break;
+			default:
+				unimpl("RDP5 opcode %d\n", type);
+		}
+
+		s->p = next;
+	}
+	ui_end_update();
+}