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/* -*- c-basic-offset: 8 -*- |
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rdesktop: A Remote Desktop Protocol client. |
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Protocol services - Clipboard functions |
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Copyright (C) Erik Forsberg <forsberg@cendio.se> 2003 |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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*/ |
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#include <X11/Xlib.h> |
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#include <X11/Xatom.h> |
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#include "rdesktop.h" |
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extern BOOL encryption; |
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extern Display *display; |
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extern Window wnd; |
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extern Time last_gesturetime; |
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|
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// static Time selection_timestamp; |
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static Atom clipboard_atom, primary_atom, targets_atom, timestamp_atom; |
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static Atom rdesktop_clipboard_target_atom; |
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static cliprdr_dataformat *server_formats = NULL; |
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static uint16 num_server_formats = 0; |
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static XSelectionEvent selection_event; |
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|
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static void |
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cliprdr_print_server_formats(void) |
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{ |
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#ifdef WITH_DEBUG_CLIPBOARD |
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cliprdr_dataformat *this; |
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uint16 i = 0; |
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this = server_formats; |
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DEBUG_CLIPBOARD(("There should be %d server formats.\n", num_server_formats)); |
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while (NULL != this) |
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{ |
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DEBUG_CLIPBOARD(("Format code %d\n", this->identifier)); |
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i++; |
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this = this->next; |
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} |
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DEBUG_CLIPBOARD(("There were %d server formats.\n", i)); |
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#endif |
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} |
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/* |
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static void |
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cliprdr_set_selection_timestamp(void) |
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{ |
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XEvent xev; |
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DEBUG_CLIPBOARD(("Changing a property in order to get a timestamp\n")); |
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fflush(stdout); |
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XChangeProperty(display, wnd, rdesktop_clipboard_target_atom, |
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XA_ATOM, 32, PropModeAppend, 0, 0); |
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DEBUG_CLIPBOARD(("Waiting for PropertyChange on wnd\n")); |
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fflush(stdout); |
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XWindowEvent(display, wnd, |
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PropertyChangeMask, &xev); |
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DEBUG_CLIPBOARD(("Setting selection_timestamp\n")); |
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fflush(stdout); |
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selection_timestamp = xev.xproperty.time; |
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} |
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*/ |
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|
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static void |
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cliprdr_send_format_announce(void) |
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{ |
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DEBUG_CLIPBOARD(("Sending format announce\n")); |
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STREAM s; |
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int number_of_formats = 1; |
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s = sec_init(encryption ? SEC_ENCRYPT : 0, number_of_formats*36+12+4+4); |
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out_uint32_le(s, number_of_formats*36+12); |
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out_uint32_le(s, 0x13); |
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out_uint16_le(s, 2); |
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out_uint16_le(s, 0); |
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out_uint32_le(s, number_of_formats*36); |
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// out_uint32_le(s, 0xd); // FIXME: This is a rather bogus unicode text description.. |
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// rdp_out_unistr(s, "", 16); |
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// out_uint8s(s, 32); |
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out_uint32_le(s, 1); // FIXME: This is a rather bogus text description.. |
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out_uint8s(s, 32); |
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out_uint32_le(s, 0); |
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s_mark_end(s); |
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sec_send_to_channel(s, encryption ? SEC_ENCRYPT : 0, 1005); // FIXME: Don't hardcode channel! |
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} |
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static void |
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cliprdr_send_empty_datapacket(void) |
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{ |
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STREAM out; |
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out = sec_init(encryption ? SEC_ENCRYPT : 0, |
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20); |
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out_uint32_le(out, 12); |
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out_uint32_le(out, 0x13); |
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out_uint16_le(out, 5); |
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out_uint16_le(out, 1); |
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out_uint32_le(out, 0); |
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/* Insert null string here? */ |
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out_uint32_le(out, 0); |
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s_mark_end(out); |
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sec_send_to_channel(out, encryption ? SEC_ENCRYPT : 0, 1005); // FIXME: Don't hardcode channel! |
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} |
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void |
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cliprdr_handle_SelectionNotify(XSelectionEvent *event) |
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{ |
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unsigned char *data; |
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unsigned long nitems, bytes_left; |
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int res; |
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int format; |
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Atom type_return; |
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Atom best_target; |
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STREAM out; |
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DEBUG_CLIPBOARD(("cliprdr_handle_SelectionNotify\n")); |
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if (None == event->property) { |
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cliprdr_send_empty_datapacket(); |
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return; /* Selection failed */ |
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} |
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DEBUG_CLIPBOARD(("selection: %s, target: %s, property: %s\n", |
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XGetAtomName(display, event->selection), |
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XGetAtomName(display, event->target), |
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XGetAtomName(display, event->property))); |
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if (targets_atom == event->target) { |
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/* Response to TARGETS request. Let's find the target |
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we want and request that */ |
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res = XGetWindowProperty(display, wnd, |
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rdesktop_clipboard_target_atom, |
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0L, 4096L, False, AnyPropertyType, |
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&type_return, |
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&format, &nitems, &bytes_left, &data); |
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if (Success != res) |
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{ |
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DEBUG_CLIPBOARD(("XGetWindowProperty failed!\n")); |
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cliprdr_send_empty_datapacket(); |
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return; |
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} |
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if (None == type_return) |
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/* The owner might no support TARGETS. Just try |
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STRING */ |
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best_target = XA_STRING; |
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else |
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{ |
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/* FIXME: We should choose format here based |
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on what the server wanted */ |
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best_target = XInternAtom(display, "TEXT", False); |
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} |
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XConvertSelection(display, primary_atom, |
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best_target, |
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rdesktop_clipboard_target_atom, |
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wnd, event->time); |
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} |
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else /* Other clipboard data */ |
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{ |
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res = XGetWindowProperty(display, wnd, |
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rdesktop_clipboard_target_atom, |
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0L, 4096L, False, AnyPropertyType, |
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&type_return, |
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&format, &nitems, &bytes_left, &data); |
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if (Success != res) |
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{ |
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DEBUG_CLIPBOARD(("XGetWindowProperty failed!\n")); |
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cliprdr_send_empty_datapacket(); |
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return; |
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} |
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/* We need to handle INCR as well */ |
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out = sec_init(encryption ? SEC_ENCRYPT : 0, |
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20+nitems+1); |
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out_uint32_le(out, 12+nitems+1); |
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out_uint32_le(out, 0x13); |
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out_uint16_le(out, 5); |
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out_uint16_le(out, 1); |
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out_uint32_le(out, nitems+1); |
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out_uint8p(out, data, nitems+1); |
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/* Insert null string here? */ |
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out_uint32_le(out, 0); |
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s_mark_end(out); |
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sec_send_to_channel(out, encryption ? SEC_ENCRYPT : 0, 1005); // FIXME: Don't hardcode channel! |
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cliprdr_send_format_announce(); |
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} |
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} |
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void |
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cliprdr_handle_SelectionClear(void) |
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{ |
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DEBUG_CLIPBOARD(("cliprdr_handle_SelectionClear\n")); |
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cliprdr_send_format_announce(); |
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} |
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static void |
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cliprdr_request_clipboard_data(uint32 formatcode) |
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{ |
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STREAM s; |
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s = sec_init(encryption ? SEC_ENCRYPT : 0, 24); |
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out_uint32_le(s, 16); |
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out_uint32_le(s, 0x13); |
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out_uint16_le(s, 4); |
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out_uint16_le(s, 0); |
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out_uint32_le(s, 4); // Remaining length |
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out_uint32_le(s, formatcode); |
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out_uint32_le(s, 0); // Unknown. Garbage pad? |
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s_mark_end(s); |
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sec_send_to_channel(s, encryption ? SEC_ENCRYPT : 0, 1005); // FIXME: Don't hardcode channel! |
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} |
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void |
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cliprdr_handle_SelectionRequest(XSelectionRequestEvent *xevent) |
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{ |
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Atom *targets; |
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int res; |
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XSelectionEvent xev; |
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DEBUG_CLIPBOARD(("cliprdr_handle_SelectionRequest\n")); |
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DEBUG_CLIPBOARD(("Requestor window id 0x%x ", |
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(unsigned)xevent->requestor)); |
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if (clipboard_atom == xevent->selection) { |
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DEBUG_CLIPBOARD(("wants CLIPBOARD\n")); |
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} |
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if (primary_atom == xevent->selection) { |
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DEBUG_CLIPBOARD(("wants PRIMARY\n")); |
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} |
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DEBUG_CLIPBOARD(("Target is %s (0x%x), property is %s (0x%x)\n", |
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XGetAtomName(display, xevent->target), |
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(unsigned)xevent->target, |
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XGetAtomName(display, xevent->property), |
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(unsigned)xevent->property)); |
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|
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xev.type = SelectionNotify; |
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xev.serial = 0; |
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xev.send_event = True; |
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xev.requestor = xevent->requestor; |
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xev.selection = xevent->selection; |
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xev.target = xevent->target; |
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xev.property = xevent->property; |
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xev.time = xevent->time; |
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if (targets_atom == xevent->target) |
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{ |
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DEBUG_CLIPBOARD(("TARGETS requested, sending list..\n")); |
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targets = xmalloc(4*sizeof(Atom)); |
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targets[0] = xevent->target; |
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targets[1] = XInternAtom(display, "TEXT", True); |
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targets[2] = XInternAtom(display, "UTF8_STRING", True); |
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targets[3] = XInternAtom(display, "TIMESTAMP", True); |
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res = XChangeProperty(display, |
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xevent->requestor, |
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xevent->property, |
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XA_ATOM, |
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32, |
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PropModeAppend, |
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(unsigned char *)targets, |
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3); |
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297 |
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res = XSendEvent(display, |
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xevent->requestor, |
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False, |
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NoEventMask, |
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(XEvent *)&xev); |
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return; |
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} else if (timestamp_atom == xevent->target) |
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{ |
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DEBUG_CLIPBOARD(("TIMESTAMP requested... sending 0x%x\n", |
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(unsigned)last_gesturetime)); |
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res = XChangeProperty(display, |
308 |
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xevent->requestor, |
309 |
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xevent->property, |
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XA_INTEGER, |
311 |
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32, |
312 |
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PropModeAppend, |
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(unsigned char *)&last_gesturetime, |
314 |
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1); |
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res = XSendEvent(display, |
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xevent->requestor, |
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False, |
318 |
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NoEventMask, |
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(XEvent *)&xev); |
320 |
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} else /* Some other target */ |
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{ |
322 |
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cliprdr_request_clipboard_data(CF_TEXT); |
323 |
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memcpy(&selection_event, &xev, sizeof(xev)); |
324 |
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/* Return and wait for data, handled by |
325 |
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cliprdr_handle_server_data */ |
326 |
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} |
327 |
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} |
328 |
forsberg |
383 |
|
329 |
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|
330 |
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static void |
331 |
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cliprdr_ack_format_list(void) |
332 |
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{ |
333 |
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STREAM s; |
334 |
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s = sec_init(encryption ? SEC_ENCRYPT : 0, 20); |
335 |
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out_uint32_le(s, 12); |
336 |
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out_uint32_le(s, 0x13); |
337 |
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out_uint16_le(s, 3); |
338 |
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out_uint16_le(s, 1); |
339 |
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out_uint32_le(s, 0); |
340 |
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out_uint32_le(s, 0x0000c0da); |
341 |
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342 |
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s_mark_end(s); |
343 |
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344 |
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sec_send_to_channel(s, encryption ? SEC_ENCRYPT : 0, 1005); // FIXME: Don't hardcode channel! |
345 |
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383 |
} |
346 |
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347 |
forsberg |
384 |
|
348 |
forsberg |
383 |
|
349 |
forsberg |
384 |
|
350 |
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|
351 |
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static void |
352 |
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cliprdr_register_server_formats(STREAM s) |
353 |
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{ |
354 |
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uint32 remaining_length, pad; |
355 |
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uint16 num_formats; |
356 |
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cliprdr_dataformat *this, *next; |
357 |
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358 |
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DEBUG_CLIPBOARD(("cliprdr_register_server_formats\n")); |
359 |
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in_uint32_le(s, remaining_length); |
360 |
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361 |
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num_formats = remaining_length / 36; |
362 |
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if (NULL != server_formats) { |
363 |
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this = server_formats; |
364 |
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next = this->next; |
365 |
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while (NULL != next) { |
366 |
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xfree(this); |
367 |
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this = NULL; |
368 |
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this = next; |
369 |
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next = this->next; |
370 |
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} |
371 |
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} |
372 |
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this = xmalloc(sizeof(cliprdr_dataformat)); |
373 |
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this->next = NULL; |
374 |
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server_formats = this; |
375 |
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num_server_formats = num_formats; |
376 |
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while (1 < num_formats) { |
377 |
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in_uint32_le(s, this->identifier); |
378 |
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in_uint8a(s, this->textual_description, 32); |
379 |
forsberg |
384 |
DEBUG_CLIPBOARD(("Stored format description with numeric id %d\n", |
380 |
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this->identifier)); |
381 |
forsberg |
383 |
this-> next = xmalloc(sizeof(cliprdr_dataformat)); |
382 |
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this = this->next; |
383 |
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num_formats--; |
384 |
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} |
385 |
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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 |
} |