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9fc138380b
xrdp/sesman/chansrv/clipboard.c
jsorg71 9fc138380b work on clipboard
2009-08-23 00:48:20 +00:00

785 lines
22 KiB
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/*
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.
xrdp: A Remote Desktop Protocol server.
Copyright (C) Jay Sorg 2009
for help see
http://tronche.com/gui/x/icccm/sec-2.html#s-2
.../kde/kdebase/workspace/klipper/clipboardpoll.cpp
*/
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <X11/extensions/Xfixes.h>
#include "arch.h"
#include "parse.h"
#include "os_calls.h"
#include "chansrv.h"
static Atom g_clipboard_atom = 0;
static Atom g_clip_property_atom = 0;
static Atom g_timestamp_atom = 0;
static Atom g_multiple_atom = 0;
static Atom g_targets_atom = 0;
static Atom g_primary_atom = 0;
static Atom g_secondary_atom = 0;
static int g_x_socket = 0;
static tbus g_x_wait_obj = 0;
static int g_clip_up = 0;
static Window g_wnd = 0;
static Screen* g_screen = 0;
static int g_screen_num = 0;
static int g_xfixes_event_base = 0;
static int g_last_clip_size = 0;
static char* g_last_clip_data = 0;
static Atom g_last_clip_type = 0;
static int g_got_selection = 0; /* boolean */
static Time g_selection_time = 0;
static struct stream* g_ins = 0;
extern int g_cliprdr_chan_id; /* in chansrv.c */
extern Display* g_display; /* in chansrv.c */
/*****************************************************************************/
/* returns time in miliseconds
this is like g_time2 in os_calls, but not miliseconds since machine was
up, something else
this is a time value similar to what the xserver uses */
static Time APP_CC
clipboard_get_time(void)
{
return g_time3();
}
/*****************************************************************************/
/* returns error */
int APP_CC
clipboard_init(void)
{
struct stream* s;
int size;
int rv;
int input_mask;
int dummy;
int ver_maj;
int ver_min;
Status st;
if (g_clip_up)
{
return 0;
}
rv = 0;
if (rv == 0)
{
g_x_socket = XConnectionNumber(g_display);
if (g_x_socket == 0)
{
g_writeln("xrdp-chansrv: clipboard_init: XConnectionNumber failed");
rv = 2;
}
g_x_wait_obj = g_create_wait_obj_from_socket(g_x_socket, 0);
}
if (rv == 0)
{
g_clipboard_atom = XInternAtom(g_display, "CLIPBOARD", False);
if (g_clipboard_atom == None)
{
g_writeln("xrdp-chansrv: clipboard_init: XInternAtom failed");
rv = 3;
}
}
if (rv == 0)
{
if (!XFixesQueryExtension(g_display, &g_xfixes_event_base, &dummy))
{
g_writeln("xrdp-chansrv: clipboard_init: no xfixes");
rv = 5;
}
}
if (rv == 0)
{
g_writeln("xrdp-chansrv: clipboard_init: g_xfixes_event_base %d",
g_xfixes_event_base);
st = XFixesQueryVersion(g_display, &ver_maj, &ver_min);
g_writeln("xrdp-chansrv: clipboard_init st %d, maj %d min %d",
st, ver_maj, ver_min);
g_screen_num = DefaultScreen(g_display);
g_screen = ScreenOfDisplay(g_display, g_screen_num);
g_clip_property_atom = XInternAtom(g_display, "XRDP_CLIP_PROPERTY_ATOM",
False);
g_timestamp_atom = XInternAtom(g_display, "TIMESTAMP", False);
g_targets_atom = XInternAtom(g_display, "TARGETS", False);
g_multiple_atom = XInternAtom(g_display, "MULTIPLE", False);
g_primary_atom = XInternAtom(g_display, "PRIMARY", False);
g_secondary_atom = XInternAtom(g_display, "SECONDARY", False);
g_wnd = XCreateSimpleWindow(g_display, RootWindowOfScreen(g_screen),
0, 0, 4, 4, 0, 0, 0);
input_mask = StructureNotifyMask;
XSelectInput(g_display, g_wnd, input_mask);
//XMapWindow(g_display, g_wnd);
XFixesSelectSelectionInput(g_display, g_wnd,
g_clipboard_atom,
XFixesSetSelectionOwnerNotifyMask |
XFixesSelectionWindowDestroyNotifyMask |
XFixesSelectionClientCloseNotifyMask);
}
if (rv == 0)
{
make_stream(s);
init_stream(s, 8192);
out_uint16_le(s, 1); /* CLIPRDR_CONNECT */
out_uint16_le(s, 0); /* status */
out_uint32_le(s, 0); /* length */
out_uint32_le(s, 0); /* extra 4 bytes ? */
s_mark_end(s);
size = (int)(s->end - s->data);
g_writeln("xrdp-chansrv: clipboard_init: data out, sending "
"CLIPRDR_CONNECT (clip_msg_id = 1)");
rv = send_channel_data(g_cliprdr_chan_id, s->data, size);
if (rv != 0)
{
g_writeln("xrdp-chansrv: clipboard_init: send_channel_data failed "
"rv = %d", rv);
rv = 4;
}
free_stream(s);
}
if (rv == 0)
{
g_clip_up = 1;
make_stream(g_ins);
init_stream(g_ins, 8192)
//g_writeln("xrdp-chansrv: clipboard_init: dumping env");
//g_system("env");
}
return rv;
}
/*****************************************************************************/
int APP_CC
clipboard_deinit(void)
{
if (!g_clip_up)
{
return 0;
}
g_delete_wait_obj_from_socket(g_x_wait_obj);
g_x_wait_obj = 0;
XDestroyWindow(g_display, g_wnd);
g_wnd = 0;
g_x_socket = 0;
g_free(g_last_clip_data);
g_last_clip_data = 0;
free_stream(g_ins);
g_clip_up = 0;
return 0;
}
/*****************************************************************************/
static int APP_CC
clipboard_send_data_request(void)
{
struct stream* s;
int size;
int rv;
int num_chars;
g_writeln("xrdp-chansrv: clipboard_send_data_request:");
make_stream(s);
init_stream(s, 8192);
out_uint16_le(s, 4); /* CLIPRDR_DATA_REQUEST */
out_uint16_le(s, 0); /* status */
out_uint32_le(s, 4); /* length */
out_uint32_le(s, 0x0d);
s_mark_end(s);
size = (int)(s->end - s->data);
g_writeln("xrdp-chansrv: clipboard_send_data_request: data out, sending "
"CLIPRDR_DATA_REQUEST (clip_msg_id = 4)");
rv = send_channel_data(g_cliprdr_chan_id, s->data, size);
free_stream(s);
return rv;
}
/*****************************************************************************/
static int APP_CC
clipboard_send_format_ack(void)
{
struct stream* s;
int size;
int rv;
make_stream(s);
init_stream(s, 8192);
out_uint16_le(s, 3); /* CLIPRDR_FORMAT_ACK */
out_uint16_le(s, 1); /* status */
out_uint32_le(s, 0); /* length */
out_uint32_le(s, 0); /* extra 4 bytes ? */
s_mark_end(s);
size = (int)(s->end - s->data);
g_writeln("xrdp-chansrv: clipboard_send_format_ack: data out, sending "
"CLIPRDR_FORMAT_ACK (clip_msg_id = 3)");
rv = send_channel_data(g_cliprdr_chan_id, s->data, size);
free_stream(s);
return rv;
}
/*****************************************************************************/
static int APP_CC
clipboard_send_format_announce(void)
{
struct stream* s;
int size;
int rv;
make_stream(s);
init_stream(s, 8192);
out_uint16_le(s, 2); /* CLIPRDR_FORMAT_ANNOUNCE */
out_uint16_le(s, 0); /* status */
out_uint32_le(s, 0x90); /* length */
out_uint32_le(s, 0x0d); /* extra 4 bytes ? */
out_uint8s(s, 0x90);
s_mark_end(s);
size = (int)(s->end - s->data);
g_writeln("xrdp-chansrv: clipboard_send_format_announce: data out, sending "
"CLIPRDR_FORMAT_ANNOUNCE (clip_msg_id = 2)");
rv = send_channel_data(g_cliprdr_chan_id, s->data, size);
free_stream(s);
return rv;
}
/*****************************************************************************/
/* returns number of bytes written */
static int APP_CC
clipboard_out_unicode(struct stream* s, char* text, int num_chars)
{
int index;
int lnum_chars;
twchar* ltext;
if ((num_chars < 1) || (text == 0))
{
return 0;
}
lnum_chars = g_mbstowcs(0, text, num_chars);
if (lnum_chars < 0)
{
return 0;
}
ltext = g_malloc((num_chars + 1) * sizeof(twchar), 1);
g_mbstowcs(ltext, text, num_chars);
index = 0;
while (index < num_chars)
{
out_uint16_le(s, ltext[index]);
index++;
}
g_free(ltext);
return index * 2;
}
/*****************************************************************************/
static int APP_CC
clipboard_send_data_response(void)
{
struct stream* s;
int size;
int rv;
int num_chars;
g_writeln("xrdp-chansrv: clipboard_send_data_response:");
num_chars = 0;
if (g_last_clip_data != 0)
{
if (g_last_clip_type == XA_STRING)
{
num_chars = g_mbstowcs(0, g_last_clip_data, 1024);
if (num_chars < 0)
{
g_writeln("xrdp-chansrv: clipboard_send_data_response: bad string");
num_chars = 0;
}
}
}
g_writeln("xrdp-chansrv: clipboard_send_data_response: g_last_clip_size %d "
"num_chars %d", g_last_clip_size, num_chars);
make_stream(s);
init_stream(s, 64 + num_chars * 2);
out_uint16_le(s, 5); /* CLIPRDR_DATA_RESPONSE */
out_uint16_le(s, 1); /* status */
out_uint32_le(s, num_chars * 2 + 2); /* length */
if (clipboard_out_unicode(s, g_last_clip_data, num_chars) != num_chars * 2)
{
g_writeln("xrdp-chansrv: clipboard_send_data_response: error "
"clipboard_out_unicode didn't write right number of bytes");
}
out_uint16_le(s, 0); /* nil for string */
out_uint32_le(s, 0);
s_mark_end(s);
size = (int)(s->end - s->data);
g_writeln("xrdp-chansrv: clipboard_send_format_announce: data out, sending "
"CLIPRDR_DATA_RESPONSE (clip_msg_id = 5)");
rv = send_channel_data(g_cliprdr_chan_id, s->data, size);
free_stream(s);
return rv;
}
/*****************************************************************************/
static int APP_CC
clipboard_process_format_announce(struct stream* s, int clip_msg_status,
int clip_msg_len)
{
Time now;
g_writeln("xrdp-chansrv: clipboard_process_format_announce:");
g_hexdump(s->p, s->end - s->p);
clipboard_send_format_ack();
g_writeln("------------------------------");
now = clipboard_get_time();
XSetSelectionOwner(g_display, g_clipboard_atom, g_wnd, now);
//XSetSelectionOwner(g_display, g_primary_atom, g_wnd, CurrentTime);
return 0;
}
/*****************************************************************************/
static int APP_CC
clipboard_prcoess_format_ack(struct stream* s, int clip_msg_status,
int clip_msg_len)
{
g_writeln("xrdp-chansrv: clipboard_prcoess_format_ack:");
g_hexdump(s->p, s->end - s->p);
return 0;
}
/*****************************************************************************/
static int APP_CC
clipboard_process_data_request(struct stream* s, int clip_msg_status,
int clip_msg_len)
{
g_writeln("xrdp-chansrv: clipboard_process_data_request:");
g_hexdump(s->p, s->end - s->p);
clipboard_send_data_response();
return 0;
}
/*****************************************************************************/
static int APP_CC
clipboard_process_data_response(struct stream* s, int clip_msg_status,
int clip_msg_len)
{
g_writeln("xrdp-chansrv: clipboard_process_data_response:");
g_hexdump(s->p, s->end - s->p);
return 0;
}
/*****************************************************************************/
int APP_CC
clipboard_data_in(struct stream* s, int chan_id, int chan_flags, int length,
int total_length)
{
int clip_msg_id;
int clip_msg_len;
int clip_msg_status;
int rv;
struct stream* ls;
g_writeln("xrdp-chansrv: clipboard_data_in: chan_is %d "
"chan_flags %d length %d total_length %d",
chan_id, chan_flags, length, total_length);
if ((chan_flags & 3) == 3)
{
ls = s;
}
else
{
if (chan_flags & 1)
{
init_stream(g_ins, total_length)
}
in_uint8a(s, g_ins->end, length);
g_ins->end += length;
if ((chan_flags & 2) == 0)
{
return 0;
}
ls = g_ins;
}
in_uint16_le(ls, clip_msg_id);
in_uint16_le(ls, clip_msg_status);
in_uint32_le(ls, clip_msg_len);
g_writeln("xrdp-chansrv: clipboard_data_in: clip_msg_id %d "
"clip_msg_status %d clip_msg_len %d",
clip_msg_id, clip_msg_status, clip_msg_len);
rv = 0;
switch (clip_msg_id)
{
case 2: /* CLIPRDR_FORMAT_ANNOUNCE */
rv = clipboard_process_format_announce(ls, clip_msg_status,
clip_msg_len);
break;
case 3: /* CLIPRDR_FORMAT_ACK */
rv = clipboard_prcoess_format_ack(ls, clip_msg_status,
clip_msg_len);
break;
case 4: /* CLIPRDR_DATA_REQUEST */
rv = clipboard_process_data_request(ls, clip_msg_status,
clip_msg_len);
break;
case 5: /* CLIPRDR_DATA_RESPONSE */
rv = clipboard_process_data_response(ls, clip_msg_status,
clip_msg_len);
break;
default:
g_writeln("xrdp-chansrv: clipboard_data_in: unknown clip_msg_id %d",
clip_msg_id);
break;
}
return rv;
}
/*****************************************************************************/
static int APP_CC
clipboard_process_selection_owner_notify(XEvent* xevent)
{
XFixesSelectionNotifyEvent* lxevent;
lxevent = (XFixesSelectionNotifyEvent*)xevent;
g_writeln("xrdp-chansrv: clipboard_process_selection_owner_notify: "
"window %d subtype %d owner %d",
lxevent->window, lxevent->subtype, lxevent->owner);
if (lxevent->subtype == 0)
{
XConvertSelection(g_display, g_clipboard_atom, XA_STRING,
g_clip_property_atom, g_wnd, CurrentTime);
}
return 0;
}
/*****************************************************************************/
/* returns error
get a window property from g_wnd */
static int APP_CC
clipboard_get_window_property(Atom prop, Atom* type, int* fmt, int* n_items,
char** xdata, int* xdata_size)
{
int lfmt;
int lxdata_size;
unsigned long ln_items;
unsigned long llen_after;
tui8* lxdata;
Atom ltype;
lxdata = 0;
ltype = 0;
XGetWindowProperty(g_display, g_wnd, prop, 0, 0, 0,
AnyPropertyType, &ltype, &lfmt, &ln_items,
&llen_after, &lxdata);
XFree(lxdata);
if (ltype == 0)
{
/* XGetWindowProperty failed */
return 1;
}
if (llen_after < 1)
{
/* no data, ok */
return 0;
}
lxdata = 0;
ltype = 0;
XGetWindowProperty(g_display, g_wnd, prop, 0, (llen_after + 3) / 4, 0,
AnyPropertyType, &ltype, &lfmt, &ln_items,
&llen_after, &lxdata);
if (ltype == 0)
{
/* XGetWindowProperty failed */
XFree(lxdata);
return 1;
}
lxdata_size = (lfmt / 8) * ln_items;
if (lxdata_size < 1)
{
/* should not happen */
XFree(lxdata);
return 2;
}
if (llen_after > 0)
{
/* should not happen */
XFree(lxdata);
return 3;
}
if (xdata != 0)
{
*xdata = (char*)g_malloc(lxdata_size, 0);
g_memcpy(*xdata, lxdata, lxdata_size);
}
XFree(lxdata);
if (xdata_size != 0)
{
*xdata_size = lxdata_size;
}
if (fmt != 0)
{
*fmt = (int)lfmt;
}
if (n_items != 0)
{
*n_items = (int)ln_items;
}
if (type != 0)
{
*type = ltype;
}
return 0;
}
/*****************************************************************************/
/* returns error
process the SelectionNotify X event, uses XSelectionEvent
typedef struct {
int type; // SelectionNotify
unsigned long serial; // # of last request processed by server
Bool send_event; // true if this came from a SendEvent request
Display *display; // Display the event was read from
Window requestor;
Atom selection;
Atom target;
Atom property; // atom or None
Time time;
} XSelectionEvent; */
static int APP_CC
clipboard_process_selection_notify(XEvent* xevent)
{
XSelectionEvent* lxevent;
char* data;
int data_size;
int n_items;
int fmt;
int rv;
Atom type;
rv = 0;
data = 0;
type = 0;
lxevent = (XSelectionEvent*)xevent;
if (lxevent->property == None)
{
g_writeln("xrdp-chansrv: clipboard_process_selection_notify: clip cound "
"not be converted");
rv = 1;
}
if (rv == 0)
{
rv = clipboard_get_window_property(lxevent->property, &type, &fmt,
&n_items, &data, &data_size);
if (rv != 0)
{
g_writeln("xrdp-chansrv: clipboard_process_selection_notify: "
"clipboard_get_window_property failed error %d", rv);
}
}
if (rv == 0)
{
g_writeln("xrdp-chansrv: clipboard_process_selection_notify: got "
"not be converted");
if (type == XA_STRING)
{
g_free(g_last_clip_data);
g_last_clip_size = data_size;
g_last_clip_data = g_malloc(g_last_clip_size + 1, 0);
g_last_clip_type = XA_STRING;
g_memcpy(g_last_clip_data, data, g_last_clip_size);
g_last_clip_data[g_last_clip_size] = 0;
}
else
{
g_writeln("xrdp-chansrv: clipboard_process_selection_notify: unknown "
"clipboard data type %d", type);
rv = 3;
}
}
XDeleteProperty(g_display, g_wnd, g_clip_property_atom);
if (rv == 0)
{
if (clipboard_send_format_announce() != 0)
{
rv = 4;
}
}
g_free(data);
return rv;
}
/*****************************************************************************/
/* returns error
process the SelectionRequest X event, uses XSelectionRequestEvent
typedef struct {
int type; // SelectionRequest
unsigned long serial; // # of last request processed by server
Bool send_event; // true if this came from a SendEvent request
Display *display; // Display the event was read from
Window owner;
Window requestor;
Atom selection;
Atom target;
Atom property;
Time time;
} XSelectionRequestEvent; */
static int APP_CC
clipboard_process_selection_request(XEvent* xevent)
{
XEvent xev;
XSelectionRequestEvent* lxevent;
lxevent = (XSelectionRequestEvent*)xevent;
g_writeln("xrdp-chansrv: clipboard_process_selection_request: g_wnd %d, "
".requestor %d .owner %d .select %d .target %d .property %d",
g_wnd, lxevent->requestor, lxevent->owner, lxevent->selection,
lxevent->target, lxevent->property);
/* requestor is asking what the selection can be converted to */
if (lxevent->target == g_targets_atom)
{
g_writeln("xrdp-chansrv: clipboard_process_selection_request: g_targets_atom");
}
/* requestor is asking the time I got the selection */
else if (lxevent->target == g_timestamp_atom)
{
g_writeln("xrdp-chansrv: clipboard_process_selection_request: g_timestamp_atom");
}
else if (lxevent->target == g_multiple_atom)
{
g_writeln("xrdp-chansrv: clipboard_process_selection_request: g_multiple_atom");
}
else if (lxevent->target == XA_STRING)
{
g_writeln("xrdp-chansrv: clipboard_process_selection_request: XA_STRING");
//XChangeProperty(g_display, lxevent->requestor, lxevent->property,
// XA_STRING, 8, PropModeReplace, "tes", 4);
//xev.xselection.property = lxevent->property;
}
else
{
g_writeln("xrdp-chansrv: clipboard_process_selection_request: unknown "
"target %s", XGetAtomName(g_display, lxevent->target));
}
g_memset(&xev, 0, sizeof(xev));
xev.xselection.type = SelectionNotify;
xev.xselection.serial = 0;
xev.xselection.send_event = True;
xev.xselection.requestor = lxevent->requestor;
xev.xselection.selection = lxevent->selection;
xev.xselection.target = lxevent->target;
xev.xselection.property = None;
xev.xselection.time = lxevent->time;
XSendEvent(g_display, lxevent->requestor, False, NoEventMask, &xev);
return 0;
}
/*****************************************************************************/
/* returns error
process the SelectionClear X event, uses XSelectionClearEvent
typedef struct {
int type; // SelectionClear
unsigned long serial; // # of last request processed by server
Bool send_event; // true if this came from a SendEvent request
Display *display; // Display the event was read from
Window window;
Atom selection;
Time time;
} XSelectionClearEvent; */
static int APP_CC
clipboard_process_selection_clear(XEvent* xevent)
{
g_writeln("xrdp-chansrv: clipboard_process_selection_clear:");
g_got_selection = 0;
return 0;
}
/*****************************************************************************/
/* returns error
this is called to get any wait objects for the main loop
timeout can be nil */
int APP_CC
clipboard_get_wait_objs(tbus* objs, int* count, int* timeout)
{
int lcount;
if ((!g_clip_up) || (objs == 0) || (count == 0))
{
return 0;
}
lcount = *count;
objs[lcount] = g_x_wait_obj;
lcount++;
*count = lcount;
return 0;
}
/*****************************************************************************/
int APP_CC
clipboard_check_wait_objs(void)
{
XEvent xevent;
if (!g_clip_up)
{
return 0;
}
if (g_is_wait_obj_set(g_x_wait_obj))
{
if (XPending(g_display) < 1)
{
/* something is wrong, should not get here */
g_writeln("xrdp-chansrv: clipboard_check_wait_objs: sck closed");
return 0;
}
while (XPending(g_display) > 0)
{
XNextEvent(g_display, &xevent);
switch (xevent.type)
{
case SelectionNotify:
clipboard_process_selection_notify(&xevent);
break;
case SelectionRequest:
clipboard_process_selection_request(&xevent);
break;
case SelectionClear:
clipboard_process_selection_clear(&xevent);
break;
case MappingNotify:
break;
default:
if (xevent.type == g_xfixes_event_base +
XFixesSetSelectionOwnerNotify)
{
clipboard_process_selection_owner_notify(&xevent);
break;
}
g_writeln("xrdp-chansrv: clipboard_check_wait_objs unknown type %d",
xevent.type);
break;
}
}
}
return 0;
}
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