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_keyrelease;

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_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);
                out_uint32_le(out, 12+nitems);
                out_uint32_le(out, 0x13);
                out_uint16_le(out, 5);
                out_uint16_le(out, 1);
                out_uint32_le(out, nitems);
                out_uint8p(out, data, nitems);
                /* 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_SelectionClear(void)
{
        DEBUG_CLIPBOARD(("cliprdr_handle_SelectionClear\n"));
}

void print_X_error(int res) 
{
        switch(res) {
        case Success:
                DEBUG_CLIPBOARD(("Success\n"));
                break;

        case BadAtom:
                DEBUG_CLIPBOARD(("BadAtom\n"));
                break;

        case BadRequest:
                DEBUG_CLIPBOARD(("BadRequest\n"));
                break;

        case BadAlloc:
                DEBUG_CLIPBOARD(("BadAlloc\n"));
                break;

        case BadMatch:
                DEBUG_CLIPBOARD(("BadMatch\n"));
                break;

        case BadValue:
                DEBUG_CLIPBOARD(("BadValue\n"));
                break;

        case BadWindow:
                DEBUG_CLIPBOARD(("BadWindow\n"));
                break;

        default:
                DEBUG_CLIPBOARD(("Unknown X error code %d\n", res));
        }
}

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);
                DEBUG_CLIPBOARD(("res after XChangeProperty is "));
                print_X_error(res);     

                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_keyrelease));
                res = XChangeProperty(display, 
                                      xevent->requestor,
                                      xevent->property,
                                      XA_INTEGER,
                                      32,
                                      PropModeAppend,
                                      (unsigned char *)&last_keyrelease,
                                      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_keyrelease);
        if (wnd != XGetSelectionOwner(display, primary_atom))
        {
                warning("Failed to aquire ownership of PRIMARY clipboard\n");
        }
        XSetSelectionOwner(display, clipboard_atom, wnd, CurrentTime);
        if (wnd != XGetSelectionOwner(display, clipboard_atom)) 
        {
                warning("Failed to aquire ownership of CLIPBOARD clipboard\n");
        }               
        
}

        
static void
cliprdr_send_format_announce(void) 
{
        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_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;
        int res;
        in_uint32_le(s, remaining_length);
        data = s->p;
        res = XChangeProperty(display, 
                              selection_event.requestor,
                              selection_event.property,
                              XInternAtom(display, "STRING", False),
                              8,
                              PropModeAppend,
                              data,
                              remaining_length);

        DEBUG_CLIPBOARD(("res after XChangeProperty is "));
        print_X_error(res);     
        
        res = XSendEvent(display, 
                         selection_event.requestor, 
                         False, 
                         NoEventMask,
                         (XEvent *)&selection_event);
        
        DEBUG_CLIPBOARD(("res after XSendEvent is "));
        print_X_error(res);

}

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) 
{
        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"));
                        return;

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