trunk/rdesktop/cliprdr.c

/* -*- c-basic-offset: 8 -*-
   rdesktop: A Remote Desktop Protocol client.
   Protocol services - Clipboard functions
   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 <X11/Xlib.h>
#include <X11/Xatom.h>
#include "rdesktop.h"

extern BOOL encryption;
extern Display *display;
extern Window wnd;
extern Time last_gesturetime;

// static Time selection_timestamp;
static Atom clipboard_atom, primary_atom, targets_atom, timestamp_atom;
static Atom rdesktop_clipboard_target_atom;
static cliprdr_dataformat *server_formats = NULL;
static uint16 num_server_formats = 0;
static XSelectionEvent selection_event;

static void
cliprdr_print_server_formats(void) 
{
#ifdef WITH_DEBUG_CLIPBOARD
        cliprdr_dataformat *this;
        uint16 i = 0;
        this = server_formats;
        DEBUG_CLIPBOARD(("There should be %d server formats.\n", num_server_formats));
        while (NULL != this) 
        {
                DEBUG_CLIPBOARD(("Format code %d\n", this->identifier));
                i++;
                this = this->next;
        }
        DEBUG_CLIPBOARD(("There were %d server formats.\n", i));
#endif
}
/*
static void 
cliprdr_set_selection_timestamp(void)
{
        XEvent xev;
        DEBUG_CLIPBOARD(("Changing a property in order to get a timestamp\n"));
        fflush(stdout);
        XChangeProperty(display, wnd, rdesktop_clipboard_target_atom,
                        XA_ATOM, 32, PropModeAppend, 0, 0);
        DEBUG_CLIPBOARD(("Waiting for PropertyChange on wnd\n"));
        fflush(stdout); 
        XWindowEvent(display, wnd, 
                     PropertyChangeMask, &xev);
        DEBUG_CLIPBOARD(("Setting selection_timestamp\n"));
        fflush(stdout); 
        selection_timestamp = xev.xproperty.time;
}       
*/      

static void
cliprdr_send_format_announce(void) 
{
        DEBUG_CLIPBOARD(("Sending format announce\n"));

        STREAM s;
        int number_of_formats = 1;
        s = sec_init(encryption ? SEC_ENCRYPT : 0, number_of_formats*36+12+4+4);
        out_uint32_le(s, number_of_formats*36+12);
        out_uint32_le(s, 0x13);
        out_uint16_le(s, 2);
        out_uint16_le(s, 0);
        out_uint32_le(s, number_of_formats*36);
        
        //      out_uint32_le(s, 0xd); // FIXME: This is a rather bogus unicode text description..
        //      rdp_out_unistr(s, "", 16);
        //      out_uint8s(s, 32);


        out_uint32_le(s, 1); // FIXME: This is a rather bogus text description..
        out_uint8s(s, 32);

        out_uint32_le(s, 0); 

        s_mark_end(s);
        sec_send_to_channel(s, encryption ? SEC_ENCRYPT : 0, 1005); // FIXME: Don't hardcode channel!
}


static void
cliprdr_send_empty_datapacket(void)
{
        STREAM out;
        out =  sec_init(encryption ? SEC_ENCRYPT : 0, 
                        20);
        out_uint32_le(out, 12);
        out_uint32_le(out, 0x13);
        out_uint16_le(out, 5);
        out_uint16_le(out, 1);
        out_uint32_le(out, 0);
        /* Insert null string here? */
        out_uint32_le(out, 0);
        s_mark_end(out);
        
        sec_send_to_channel(out, encryption ? SEC_ENCRYPT : 0, 1005); // FIXME: Don't hardcode channel!   
}


void 
cliprdr_handle_SelectionNotify(XSelectionEvent *event)
{

        unsigned char   *data;
        unsigned long   nitems, bytes_left;
        int res;

        int format;
        Atom type_return;
        Atom best_target;

        STREAM out;
        
        DEBUG_CLIPBOARD(("cliprdr_handle_SelectionNotify\n"));

        if (None == event->property) {
                cliprdr_send_empty_datapacket();
                return; /* Selection failed */
        } 

        DEBUG_CLIPBOARD(("selection: %s, target: %s, property: %s\n",
                         XGetAtomName(display, event->selection),
                         XGetAtomName(display, event->target),
                         XGetAtomName(display, event->property)));

        if (targets_atom == event->target) {
                /* Response to TARGETS request. Let's find the target
                   we want and request that */
                res = XGetWindowProperty(display, wnd, 
                                         rdesktop_clipboard_target_atom,
                                         0L, 4096L, False, AnyPropertyType, 
                                         &type_return,
                                         &format, &nitems, &bytes_left, &data);

                if (Success != res) 
                {
                        DEBUG_CLIPBOARD(("XGetWindowProperty failed!\n"));
                        cliprdr_send_empty_datapacket();
                        return;
                }

                if (None == type_return) 
                        /* The owner might no support TARGETS. Just try
                           STRING */
                        best_target = XA_STRING;
                else 
                {
                        /* FIXME: We should choose format here based
                           on what the server wanted */
                        best_target = XInternAtom(display, "TEXT", False);
                        
                        
                }

                XConvertSelection(display, primary_atom, 
                                  best_target,
                                  rdesktop_clipboard_target_atom, 
                                  wnd, event->time);

        } 
        else  /* Other clipboard data */
        {
                
                res = XGetWindowProperty(display, wnd, 
                                         rdesktop_clipboard_target_atom,
                                         0L, 4096L, False, AnyPropertyType, 
                                         &type_return,
                                         &format, &nitems, &bytes_left, &data);

                if (Success != res) 
                {
                        DEBUG_CLIPBOARD(("XGetWindowProperty failed!\n"));
                        cliprdr_send_empty_datapacket();
                        return;
                }

                /* We need to handle INCR as well */

                out =  sec_init(encryption ? SEC_ENCRYPT : 0, 
                                20+nitems+1);
                out_uint32_le(out, 12+nitems+1);
                out_uint32_le(out, 0x13);
                out_uint16_le(out, 5);
                out_uint16_le(out, 1);
                out_uint32_le(out, nitems+1);
                out_uint8p(out, data, nitems+1);
                /* Insert null string here? */
                out_uint32_le(out, 0);
                s_mark_end(out);
        
                sec_send_to_channel(out, encryption ? SEC_ENCRYPT : 0, 1005); // FIXME: Don't hardcode channel!   

                cliprdr_send_format_announce();
                
        }
        
        
}

void
cliprdr_handle_SelectionClear(void)
{
        DEBUG_CLIPBOARD(("cliprdr_handle_SelectionClear\n"));
        cliprdr_send_format_announce();
}


static void
cliprdr_request_clipboard_data(uint32 formatcode) 
{
        STREAM s;
        s = sec_init(encryption ? SEC_ENCRYPT : 0, 24);
        out_uint32_le(s, 16);
        out_uint32_le(s, 0x13);
        out_uint16_le(s, 4);
        out_uint16_le(s, 0);
        out_uint32_le(s, 4); // Remaining length
        out_uint32_le(s, formatcode);
        out_uint32_le(s, 0); // Unknown. Garbage pad?

        s_mark_end(s);

        sec_send_to_channel(s, encryption ? SEC_ENCRYPT : 0, 1005); // FIXME: Don't hardcode channel!
}


void
cliprdr_handle_SelectionRequest(XSelectionRequestEvent *xevent) 
{

        Atom *targets;
        int res;

        XSelectionEvent xev;
        DEBUG_CLIPBOARD(("cliprdr_handle_SelectionRequest\n"));
        DEBUG_CLIPBOARD(("Requestor window id 0x%x ", 
                         (unsigned)xevent->requestor));
        if (clipboard_atom == xevent->selection) {
                DEBUG_CLIPBOARD(("wants CLIPBOARD\n"));
        } 
        if (primary_atom == xevent->selection) {
                DEBUG_CLIPBOARD(("wants PRIMARY\n"));
        }  
        DEBUG_CLIPBOARD(("Target is %s (0x%x), property is %s (0x%x)\n", 
                         XGetAtomName(display, xevent->target), 
                         (unsigned)xevent->target, 
                         XGetAtomName(display, xevent->property), 
                         (unsigned)xevent->property));

        xev.type = SelectionNotify;
        xev.serial = 0;
        xev.send_event = True;
        xev.requestor = xevent->requestor;
        xev.selection = xevent->selection;
        xev.target = xevent->target;
        xev.property = xevent->property;
        xev.time = xevent->time;

        if (targets_atom == xevent->target) 
        {
                DEBUG_CLIPBOARD(("TARGETS requested, sending list..\n"));
                targets = xmalloc(4*sizeof(Atom));
                targets[0] = xevent->target;
                targets[1] = XInternAtom(display, "TEXT", True);
                targets[2] = XInternAtom(display, "UTF8_STRING", True);
                targets[3] = XInternAtom(display, "TIMESTAMP", True);
                res = XChangeProperty(display, 
                                      xevent->requestor,
                                      xevent->property,
                                      XA_ATOM,
                                      32,
                                      PropModeAppend,
                                      (unsigned char *)targets,
                                      3);

                res = XSendEvent(display, 
                                 xevent->requestor, 
                                 False, 
                                 NoEventMask,
                                 (XEvent *)&xev);
                return;
        } else if (timestamp_atom == xevent->target) 
        {
                DEBUG_CLIPBOARD(("TIMESTAMP requested... sending 0x%x\n",
                                 (unsigned)last_gesturetime));
                res = XChangeProperty(display, 
                                      xevent->requestor,
                                      xevent->property,
                                      XA_INTEGER,
                                      32,
                                      PropModeAppend,
                                      (unsigned char *)&last_gesturetime,
                                      1);
                res = XSendEvent(display, 
                                 xevent->requestor, 
                                 False, 
                                 NoEventMask,
                                 (XEvent *)&xev);
        } else /* Some other target */
        {
                cliprdr_request_clipboard_data(CF_TEXT);
                memcpy(&selection_event, &xev, sizeof(xev));
                /* Return and wait for data, handled by 
                   cliprdr_handle_server_data */
        }
}


static void 
cliprdr_ack_format_list(void) 
{
        STREAM s;
        s = sec_init(encryption ? SEC_ENCRYPT : 0, 20);
        out_uint32_le(s, 12);
        out_uint32_le(s, 0x13);
        out_uint16_le(s, 3);
        out_uint16_le(s, 1);
        out_uint32_le(s, 0);
        out_uint32_le(s, 0x0000c0da);

        s_mark_end(s);

        sec_send_to_channel(s, encryption ? SEC_ENCRYPT : 0, 1005); // FIXME: Don't hardcode channel!
}

                
static void
cliprdr_register_server_formats(STREAM s) 
{
        uint32 remaining_length, pad;
        uint16 num_formats;
        cliprdr_dataformat *this, *next;

        DEBUG_CLIPBOARD(("cliprdr_register_server_formats\n"));
        in_uint32_le(s, remaining_length);

        num_formats = remaining_length / 36;
        if (NULL != server_formats) {
                this = server_formats;
                next = this->next;
                while (NULL != next) {
                        xfree(this);
                        this = NULL;
                        this = next;
                        next = this->next;
                }
        } 
        this = xmalloc(sizeof(cliprdr_dataformat));
        this->next = NULL;
        server_formats = this;
        num_server_formats = num_formats;
        while (1 < num_formats) {
                in_uint32_le(s, this->identifier);
                in_uint8a(s, this->textual_description, 32);
                DEBUG_CLIPBOARD(("Stored format description with numeric id %d\n", 
                                 this->identifier));
                this-> next = xmalloc(sizeof(cliprdr_dataformat));
                this = this->next;
                num_formats--;
        }
        in_uint32_le(s, this->identifier);
        DEBUG_CLIPBOARD(("Stored format description with numeric id %d\n", this->identifier));
        in_uint8a(s, this->textual_description, 32);
        this -> next = NULL;
        in_uint32_le(s, pad);
        cliprdr_print_server_formats();
}

static void
cliprdr_select_X_clipboards(void) 
{
        XSetSelectionOwner(display, primary_atom, wnd, last_gesturetime);
        if (wnd != XGetSelectionOwner(display, primary_atom))
        {
                warning("Failed to aquire ownership of PRIMARY clipboard\n");
        }
        XSetSelectionOwner(display, clipboard_atom, wnd, last_gesturetime);
        if (wnd != XGetSelectionOwner(display, clipboard_atom)) 
        {
                warning("Failed to aquire ownership of CLIPBOARD clipboard\n");
        }               
        
}

        
static void 
cliprdr_handle_first_handshake(STREAM s)
{
        uint32 remaining_length, pad;
        in_uint32_le(s, remaining_length);
        in_uint32_le(s, pad);
        DEBUG_CLIPBOARD(("Remaining length in first handshake frm server is %d, pad is %d\n", 
                         remaining_length, pad));
        cliprdr_send_format_announce();
}

void cliprdr_handle_server_data(uint32 length, STREAM s) 
{
        uint32 remaining_length;
        char *data;
        in_uint32_le(s, remaining_length);
        data = s->p;
        XChangeProperty(display, 
                        selection_event.requestor,
                        selection_event.property,
                        XInternAtom(display, "STRING", False),
                        8,
                        PropModeAppend,
                        data,
                        remaining_length);

        XSendEvent(display, 
                   selection_event.requestor, 
                   False, 
                   NoEventMask,
                   (XEvent *)&selection_event);
        

}

void cliprdr_handle_server_data_request(STREAM s) 
{
        Window selectionowner;
        uint32 remaining_length;
        uint32 wanted_formatcode, pad;

        in_uint32_le(s, remaining_length);
        in_uint32_le(s, wanted_formatcode);
        in_uint32_le(s, pad);

        /* FIXME: Check that we support this formatcode */

        DEBUG_CLIPBOARD(("Request from server for format %d\n", 
                         wanted_formatcode));

        selectionowner = XGetSelectionOwner(display, primary_atom);

        if (None != selectionowner) 
        {
        
                /* FIXME: Perhaps we should check if we are the owner? */

                XConvertSelection(display, primary_atom, 
                                  targets_atom,
                                  rdesktop_clipboard_target_atom, 
                                  wnd, CurrentTime);

                /* The rest of the transfer is handled in 
                   cliprdr_handle_SelectionNotify */

        } else 
        {
                DEBUG_CLIPBOARD(("There were no owner for PRIMARY, sending empty string\n")); // FIXME: Should we always send an empty string?

                cliprdr_send_empty_datapacket();
        }


}
        

void cliprdr_callback(STREAM s) 
{
        static int failed_clipboard_acks = 0;
        struct timeval timeval;
        uint32 length, flags;
        uint16 ptype0, ptype1;
        DEBUG_CLIPBOARD(("cliprdr_callback called, clipboard data:\n"));
#ifdef WITH_DEBUG_CLIPBOARD
        hexdump(s->p, s->end - s->p);
#endif
        in_uint32_le(s, length);
        in_uint32_le(s, flags);

        DEBUG_CLIPBOARD(("length is %d, flags are %d\n", length, flags));

        if (flags & 0x03 || flags & 0x01) /* Single-write op or first-packet-of-several op */
        {
                in_uint16_le(s, ptype0);
                in_uint16_le(s, ptype1);
                DEBUG_CLIPBOARD(("ptype0 is %d, ptype1 is %d\n", ptype0, ptype1));
                if (1 == ptype0 && 0 == ptype1) {
                        cliprdr_handle_first_handshake(s);
                        return;
                } else if (3 == ptype0 && 1 == ptype1) 
                {
                        // Acknowledgment on our format announce. Do we care? Not right now.
                        // There is a strange pad in this packet that we might need some time,
                        // but probably not.
                        DEBUG_CLIPBOARD(("Received format announce ACK\n"));
                        failed_clipboard_acks = 0;
                        return;

                } else if (3 == ptype0 && 2 == ptype1) 
                {
                        DEBUG_CLIPBOARD(("Received failed clipboard format announce ACK, retrying\n"));

                        /* This is a fairly portable way to sleep 1/10 of
                           a second.. */
                        timeval.tv_sec = 0;
                        timeval.tv_usec = 100;
                        select(0, NULL, NULL, NULL, &timeval);
                        if (failed_clipboard_acks < 3)
                        {
                                
                                cliprdr_send_format_announce();
                                /* Make sure we don't get stuck in this loop */
                                failed_clipboard_acks++;
                        } 
                        else
                        {
                                warning("Reached maximum number of clipboard format announce attempts. Pasting in Windows probably won't work well now.\n");
                        }
                } else if (2 == ptype0 && 0 == ptype1) 
                {
                        cliprdr_register_server_formats(s);
                        cliprdr_select_X_clipboards();
                        cliprdr_ack_format_list();
                        return;
                } else if (5 == ptype0 && 1 == ptype1) 
                {
                        cliprdr_handle_server_data(length, s);
                } else if (4 == ptype0 && 0 == ptype1) 
                {
                        cliprdr_handle_server_data_request(s);
                }

                
        }
}


void cliprdr_init(void) 
{
        primary_atom = XInternAtom(display, "PRIMARY", False);
        clipboard_atom = XInternAtom(display, "CLIPBOARD", False);
        targets_atom = XInternAtom(display, "TARGETS", False);
        timestamp_atom = XInternAtom(display, "TIMESTAMP", False);
        rdesktop_clipboard_target_atom = XInternAtom(display, "_RDESKTOP_CLIPBOARD_TARGET", False);
}
1	forsberg	383	/* -- c-basic-offset: 8 --
2			rdesktop: A Remote Desktop Protocol client.
3			Protocol services - Clipboard functions
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 <X11/Xlib.h>
22			#include <X11/Xatom.h>
23			#include "rdesktop.h"
24
25			extern BOOL encryption;
26			extern Display *display;
27			extern Window wnd;
28	forsberg	388	extern Time last_gesturetime;
29	forsberg	383
30	forsberg	388	// static Time selection_timestamp;
31	forsberg	383	static Atom clipboard_atom, primary_atom, targets_atom, timestamp_atom;
32	forsberg	386	static Atom rdesktop_clipboard_target_atom;
33	forsberg	383	static cliprdr_dataformat *server_formats = NULL;
34			static uint16 num_server_formats = 0;
35	forsberg	384	static XSelectionEvent selection_event;
36	forsberg	383
37			static void
38			cliprdr_print_server_formats(void)
39			{
40			#ifdef WITH_DEBUG_CLIPBOARD
41			cliprdr_dataformat *this;
42			uint16 i = 0;
43			this = server_formats;
44			DEBUG_CLIPBOARD(("There should be %d server formats.\n", num_server_formats));
45			while (NULL != this)
46			{
47			DEBUG_CLIPBOARD(("Format code %d\n", this->identifier));
48			i++;
49			this = this->next;
50			}
51	forsberg	384	DEBUG_CLIPBOARD(("There were %d server formats.\n", i));
52	forsberg	383	#endif
53			}
54	forsberg	388	/*
55			static void
56			cliprdr_set_selection_timestamp(void)
57			{
58			XEvent xev;
59			DEBUG_CLIPBOARD(("Changing a property in order to get a timestamp\n"));
60			fflush(stdout);
61			XChangeProperty(display, wnd, rdesktop_clipboard_target_atom,
62			XA_ATOM, 32, PropModeAppend, 0, 0);
63			DEBUG_CLIPBOARD(("Waiting for PropertyChange on wnd\n"));
64			fflush(stdout);
65			XWindowEvent(display, wnd,
66			PropertyChangeMask, &xev);
67			DEBUG_CLIPBOARD(("Setting selection_timestamp\n"));
68			fflush(stdout);
69			selection_timestamp = xev.xproperty.time;
70			}
71			*/
72	forsberg	383
73	forsberg	386	static void
74	forsberg	387	cliprdr_send_format_announce(void)
75			{
76	forsberg	388	DEBUG_CLIPBOARD(("Sending format announce\n"));
77
78	forsberg	387	STREAM s;
79			int number_of_formats = 1;
80			s = sec_init(encryption ? SEC_ENCRYPT : 0, number_of_formats*36+12+4+4);
81			out_uint32_le(s, number_of_formats*36+12);
82			out_uint32_le(s, 0x13);
83			out_uint16_le(s, 2);
84			out_uint16_le(s, 0);
85			out_uint32_le(s, number_of_formats*36);
86
87			// out_uint32_le(s, 0xd); // FIXME: This is a rather bogus unicode text description..
88			// rdp_out_unistr(s, "", 16);
89			// out_uint8s(s, 32);
90
91
92			out_uint32_le(s, 1); // FIXME: This is a rather bogus text description..
93			out_uint8s(s, 32);
94
95			out_uint32_le(s, 0);
96
97			s_mark_end(s);
98			sec_send_to_channel(s, encryption ? SEC_ENCRYPT : 0, 1005); // FIXME: Don't hardcode channel!
99			}
100
101
102			static void
103	forsberg	386	cliprdr_send_empty_datapacket(void)
104			{
105			STREAM out;
106			out = sec_init(encryption ? SEC_ENCRYPT : 0,
107			20);
108			out_uint32_le(out, 12);
109			out_uint32_le(out, 0x13);
110			out_uint16_le(out, 5);
111			out_uint16_le(out, 1);
112			out_uint32_le(out, 0);
113			/* Insert null string here? */
114			out_uint32_le(out, 0);
115			s_mark_end(out);
116
117			sec_send_to_channel(out, encryption ? SEC_ENCRYPT : 0, 1005); // FIXME: Don't hardcode channel!
118			}
119
120
121	forsberg	383	void
122	forsberg	386	cliprdr_handle_SelectionNotify(XSelectionEvent *event)
123	forsberg	383	{
124	forsberg	386
125			unsigned char *data;
126			unsigned long nitems, bytes_left;
127			int res;
128
129			int format;
130			Atom type_return;
131			Atom best_target;
132
133			STREAM out;
134
135	forsberg	383	DEBUG_CLIPBOARD(("cliprdr_handle_SelectionNotify\n"));
136	forsberg	386
137			if (None == event->property) {
138			cliprdr_send_empty_datapacket();
139			return; /* Selection failed */
140			}
141
142			DEBUG_CLIPBOARD(("selection: %s, target: %s, property: %s\n",
143			XGetAtomName(display, event->selection),
144			XGetAtomName(display, event->target),
145			XGetAtomName(display, event->property)));
146
147			if (targets_atom == event->target) {
148			/* Response to TARGETS request. Let's find the target
149			we want and request that */
150			res = XGetWindowProperty(display, wnd,
151			rdesktop_clipboard_target_atom,
152			0L, 4096L, False, AnyPropertyType,
153			&type_return,
154			&format, &nitems, &bytes_left, &data);
155
156			if (Success != res)
157			{
158			DEBUG_CLIPBOARD(("XGetWindowProperty failed!\n"));
159			cliprdr_send_empty_datapacket();
160			return;
161			}
162
163			if (None == type_return)
164			/* The owner might no support TARGETS. Just try
165			STRING */
166			best_target = XA_STRING;
167			else
168			{
169			/* FIXME: We should choose format here based
170			on what the server wanted */
171			best_target = XInternAtom(display, "TEXT", False);
172
173
174			}
175
176			XConvertSelection(display, primary_atom,
177			best_target,
178			rdesktop_clipboard_target_atom,
179			wnd, event->time);
180
181			}
182			else /* Other clipboard data */
183			{
184
185			res = XGetWindowProperty(display, wnd,
186			rdesktop_clipboard_target_atom,
187			0L, 4096L, False, AnyPropertyType,
188			&type_return,
189			&format, &nitems, &bytes_left, &data);
190
191			if (Success != res)
192			{
193			DEBUG_CLIPBOARD(("XGetWindowProperty failed!\n"));
194			cliprdr_send_empty_datapacket();
195			return;
196			}
197
198			/* We need to handle INCR as well */
199
200			out = sec_init(encryption ? SEC_ENCRYPT : 0,
201	forsberg	389	20+nitems+1);
202			out_uint32_le(out, 12+nitems+1);
203	forsberg	386	out_uint32_le(out, 0x13);
204			out_uint16_le(out, 5);
205			out_uint16_le(out, 1);
206	forsberg	389	out_uint32_le(out, nitems+1);
207			out_uint8p(out, data, nitems+1);
208	forsberg	386	/* Insert null string here? */
209			out_uint32_le(out, 0);
210			s_mark_end(out);
211
212			sec_send_to_channel(out, encryption ? SEC_ENCRYPT : 0, 1005); // FIXME: Don't hardcode channel!
213	forsberg	388
214			cliprdr_send_format_announce();
215	forsberg	386
216			}
217
218
219	forsberg	383	}
220
221			void
222			cliprdr_handle_SelectionClear(void)
223			{
224			DEBUG_CLIPBOARD(("cliprdr_handle_SelectionClear\n"));
225	forsberg	387	cliprdr_send_format_announce();
226	forsberg	383	}
227
228
229	forsberg	384	static void
230			cliprdr_request_clipboard_data(uint32 formatcode)
231			{
232			STREAM s;
233			s = sec_init(encryption ? SEC_ENCRYPT : 0, 24);
234			out_uint32_le(s, 16);
235			out_uint32_le(s, 0x13);
236			out_uint16_le(s, 4);
237			out_uint16_le(s, 0);
238			out_uint32_le(s, 4); // Remaining length
239			out_uint32_le(s, formatcode);
240			out_uint32_le(s, 0); // Unknown. Garbage pad?
241
242			s_mark_end(s);
243
244			sec_send_to_channel(s, encryption ? SEC_ENCRYPT : 0, 1005); // FIXME: Don't hardcode channel!
245			}
246
247
248	forsberg	383	void
249			cliprdr_handle_SelectionRequest(XSelectionRequestEvent *xevent)
250			{
251
252			Atom *targets;
253			int res;
254
255			XSelectionEvent xev;
256			DEBUG_CLIPBOARD(("cliprdr_handle_SelectionRequest\n"));
257	forsberg	384	DEBUG_CLIPBOARD(("Requestor window id 0x%x ",
258			(unsigned)xevent->requestor));
259	forsberg	383	if (clipboard_atom == xevent->selection) {
260			DEBUG_CLIPBOARD(("wants CLIPBOARD\n"));
261			}
262			if (primary_atom == xevent->selection) {
263			DEBUG_CLIPBOARD(("wants PRIMARY\n"));
264			}
265			DEBUG_CLIPBOARD(("Target is %s (0x%x), property is %s (0x%x)\n",
266			XGetAtomName(display, xevent->target),
267	forsberg	384	(unsigned)xevent->target,
268	forsberg	383	XGetAtomName(display, xevent->property),
269	forsberg	384	(unsigned)xevent->property));
270	forsberg	383
271			xev.type = SelectionNotify;
272			xev.serial = 0;
273			xev.send_event = True;
274			xev.requestor = xevent->requestor;
275			xev.selection = xevent->selection;
276			xev.target = xevent->target;
277			xev.property = xevent->property;
278			xev.time = xevent->time;
279
280			if (targets_atom == xevent->target)
281			{
282			DEBUG_CLIPBOARD(("TARGETS requested, sending list..\n"));
283			targets = xmalloc(4*sizeof(Atom));
284			targets[0] = xevent->target;
285			targets[1] = XInternAtom(display, "TEXT", True);
286			targets[2] = XInternAtom(display, "UTF8_STRING", True);
287			targets[3] = XInternAtom(display, "TIMESTAMP", True);
288			res = XChangeProperty(display,
289			xevent->requestor,
290			xevent->property,
291			XA_ATOM,
292			32,
293			PropModeAppend,
294			(unsigned char *)targets,
295			3);
296
297			res = XSendEvent(display,
298			xevent->requestor,
299			False,
300			NoEventMask,
301			(XEvent *)&xev);
302			return;
303			} else if (timestamp_atom == xevent->target)
304			{
305			DEBUG_CLIPBOARD(("TIMESTAMP requested... sending 0x%x\n",
306	forsberg	388	(unsigned)last_gesturetime));
307	forsberg	383	res = XChangeProperty(display,
308			xevent->requestor,
309			xevent->property,
310			XA_INTEGER,
311			32,
312			PropModeAppend,
313	forsberg	388	(unsigned char *)&last_gesturetime,
314	forsberg	383	1);
315			res = XSendEvent(display,
316			xevent->requestor,
317			False,
318			NoEventMask,
319			(XEvent *)&xev);
320			} else /* Some other target */
321			{
322	forsberg	384	cliprdr_request_clipboard_data(CF_TEXT);
323			memcpy(&selection_event, &xev, sizeof(xev));
324			/* Return and wait for data, handled by
325			cliprdr_handle_server_data */
326			}
327			}
328	forsberg	383
329
330	forsberg	384	static void
331			cliprdr_ack_format_list(void)
332			{
333			STREAM s;
334			s = sec_init(encryption ? SEC_ENCRYPT : 0, 20);
335			out_uint32_le(s, 12);
336			out_uint32_le(s, 0x13);
337			out_uint16_le(s, 3);
338			out_uint16_le(s, 1);
339			out_uint32_le(s, 0);
340			out_uint32_le(s, 0x0000c0da);
341
342			s_mark_end(s);
343
344			sec_send_to_channel(s, encryption ? SEC_ENCRYPT : 0, 1005); // FIXME: Don't hardcode channel!
345	forsberg	383	}
346
347	forsberg	384
348	forsberg	383
349	forsberg	384
350
351	forsberg	383	static void
352			cliprdr_register_server_formats(STREAM s)
353			{
354			uint32 remaining_length, pad;
355			uint16 num_formats;
356			cliprdr_dataformat this, next;
357
358			DEBUG_CLIPBOARD(("cliprdr_register_server_formats\n"));
359			in_uint32_le(s, remaining_length);
360
361			num_formats = remaining_length / 36;
362			if (NULL != server_formats) {
363			this = server_formats;
364			next = this->next;
365			while (NULL != next) {
366			xfree(this);
367			this = NULL;
368			this = next;
369			next = this->next;
370			}
371			}
372			this = xmalloc(sizeof(cliprdr_dataformat));
373			this->next = NULL;
374			server_formats = this;
375			num_server_formats = num_formats;
376			while (1 < num_formats) {
377			in_uint32_le(s, this->identifier);
378			in_uint8a(s, this->textual_description, 32);
379	forsberg	384	DEBUG_CLIPBOARD(("Stored format description with numeric id %d\n",
380			this->identifier));
381	forsberg	383	this-> next = xmalloc(sizeof(cliprdr_dataformat));
382			this = this->next;
383			num_formats--;
384			}
385			in_uint32_le(s, this->identifier);
386			DEBUG_CLIPBOARD(("Stored format description with numeric id %d\n", this->identifier));
387			in_uint8a(s, this->textual_description, 32);
388			this -> next = NULL;
389			in_uint32_le(s, pad);
390			cliprdr_print_server_formats();
391			}
392
393			static void
394			cliprdr_select_X_clipboards(void)
395			{
396	forsberg	388	XSetSelectionOwner(display, primary_atom, wnd, last_gesturetime);
397	forsberg	383	if (wnd != XGetSelectionOwner(display, primary_atom))
398			{
399			warning("Failed to aquire ownership of PRIMARY clipboard\n");
400			}
401	forsberg	388	XSetSelectionOwner(display, clipboard_atom, wnd, last_gesturetime);
402	forsberg	383	if (wnd != XGetSelectionOwner(display, clipboard_atom))
403			{
404			warning("Failed to aquire ownership of CLIPBOARD clipboard\n");
405			}
406
407			}
408
409	forsberg	384
410
411	forsberg	385
412
413	forsberg	383	static void
414			cliprdr_handle_first_handshake(STREAM s)
415			{
416			uint32 remaining_length, pad;
417			in_uint32_le(s, remaining_length);
418			in_uint32_le(s, pad);
419			DEBUG_CLIPBOARD(("Remaining length in first handshake frm server is %d, pad is %d\n",
420			remaining_length, pad));
421			cliprdr_send_format_announce();
422			}
423
424	forsberg	384	void cliprdr_handle_server_data(uint32 length, STREAM s)
425			{
426			uint32 remaining_length;
427			char *data;
428			in_uint32_le(s, remaining_length);
429			data = s->p;
430	forsberg	388	XChangeProperty(display,
431			selection_event.requestor,
432			selection_event.property,
433			XInternAtom(display, "STRING", False),
434			8,
435			PropModeAppend,
436			data,
437			remaining_length);
438	forsberg	384
439	forsberg	388	XSendEvent(display,
440			selection_event.requestor,
441			False,
442			NoEventMask,
443			(XEvent *)&selection_event);
444	forsberg	384
445
446			}
447
448	forsberg	385	void cliprdr_handle_server_data_request(STREAM s)
449			{
450	forsberg	386	Window selectionowner;
451	forsberg	385	uint32 remaining_length;
452			uint32 wanted_formatcode, pad;
453
454			in_uint32_le(s, remaining_length);
455			in_uint32_le(s, wanted_formatcode);
456			in_uint32_le(s, pad);
457
458			/* FIXME: Check that we support this formatcode */
459
460			DEBUG_CLIPBOARD(("Request from server for format %d\n",
461			wanted_formatcode));
462
463	forsberg	386	selectionowner = XGetSelectionOwner(display, primary_atom);
464	forsberg	385
465	forsberg	386	if (None != selectionowner)
466			{
467	forsberg	385
468	forsberg	386	/* FIXME: Perhaps we should check if we are the owner? */
469	forsberg	385
470	forsberg	386	XConvertSelection(display, primary_atom,
471			targets_atom,
472			rdesktop_clipboard_target_atom,
473			wnd, CurrentTime);
474
475			/* The rest of the transfer is handled in
476			cliprdr_handle_SelectionNotify */
477
478			} else
479	forsberg	385	{
480	forsberg	386	DEBUG_CLIPBOARD(("There were no owner for PRIMARY, sending empty string\n")); // FIXME: Should we always send an empty string?
481
482			cliprdr_send_empty_datapacket();
483	forsberg	385	}
484	forsberg	386
485
486	forsberg	385	}
487
488
489	forsberg	383	void cliprdr_callback(STREAM s)
490			{
491	forsberg	389	static int failed_clipboard_acks = 0;
492			struct timeval timeval;
493	forsberg	383	uint32 length, flags;
494			uint16 ptype0, ptype1;
495			DEBUG_CLIPBOARD(("cliprdr_callback called, clipboard data:\n"));
496			#ifdef WITH_DEBUG_CLIPBOARD
497			hexdump(s->p, s->end - s->p);
498			#endif
499			in_uint32_le(s, length);
500			in_uint32_le(s, flags);
501
502			DEBUG_CLIPBOARD(("length is %d, flags are %d\n", length, flags));
503
504			if (flags & 0x03 \|\| flags & 0x01) /* Single-write op or first-packet-of-several op */
505			{
506			in_uint16_le(s, ptype0);
507			in_uint16_le(s, ptype1);
508			DEBUG_CLIPBOARD(("ptype0 is %d, ptype1 is %d\n", ptype0, ptype1));
509			if (1 == ptype0 && 0 == ptype1) {
510			cliprdr_handle_first_handshake(s);
511			return;
512			} else if (3 == ptype0 && 1 == ptype1)
513			{
514			// Acknowledgment on our format announce. Do we care? Not right now.
515			// There is a strange pad in this packet that we might need some time,
516			// but probably not.
517			DEBUG_CLIPBOARD(("Received format announce ACK\n"));
518	forsberg	389	failed_clipboard_acks = 0;
519	forsberg	383	return;
520	forsberg	384
521	forsberg	389	} else if (3 == ptype0 && 2 == ptype1)
522			{
523			DEBUG_CLIPBOARD(("Received failed clipboard format announce ACK, retrying\n"));
524
525			/* This is a fairly portable way to sleep 1/10 of
526			a second.. */
527			timeval.tv_sec = 0;
528			timeval.tv_usec = 100;
529			select(0, NULL, NULL, NULL, &timeval);
530			if (failed_clipboard_acks < 3)
531			{
532
533			cliprdr_send_format_announce();
534			/* Make sure we don't get stuck in this loop */
535			failed_clipboard_acks++;
536			}
537			else
538			{
539			warning("Reached maximum number of clipboard format announce attempts. Pasting in Windows probably won't work well now.\n");
540			}
541	forsberg	383	} else if (2 == ptype0 && 0 == ptype1)
542			{
543			cliprdr_register_server_formats(s);
544			cliprdr_select_X_clipboards();
545	forsberg	384	cliprdr_ack_format_list();
546	forsberg	383	return;
547	forsberg	384	} else if (5 == ptype0 && 1 == ptype1)
548			{
549			cliprdr_handle_server_data(length, s);
550	forsberg	385	} else if (4 == ptype0 && 0 == ptype1)
551			{
552			cliprdr_handle_server_data_request(s);
553	forsberg	383	}
554	forsberg	385
555	forsberg	383
556			}
557			}
558
559	forsberg	384
560	forsberg	383	void cliprdr_init(void)
561			{
562			primary_atom = XInternAtom(display, "PRIMARY", False);
563			clipboard_atom = XInternAtom(display, "CLIPBOARD", False);
564	forsberg	386	targets_atom = XInternAtom(display, "TARGETS", False);
565			timestamp_atom = XInternAtom(display, "TIMESTAMP", False);
566			rdesktop_clipboard_target_atom = XInternAtom(display, "_RDESKTOP_CLIPBOARD_TARGET", False);
567	forsberg	383	}