3e8d6179ad
A lot of stuff remains for a full implementation. git-svn-id: svn://svn.code.sf.net/p/rdesktop/code/trunk/rdesktop@383 423420c4-83ab-492f-b58f-81f9feb106b5
400 lines
9.9 KiB
C
400 lines
9.9 KiB
C
/* -*- 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_keyrelease;
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static Atom clipboard_atom, primary_atom, targets_atom, timestamp_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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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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void
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cliprdr_handle_SelectionNotify(void)
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{
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DEBUG_CLIPBOARD(("cliprdr_handle_SelectionNotify\n"));
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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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}
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void print_X_error(int res)
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{
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switch(res) {
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case Success:
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DEBUG_CLIPBOARD(("Success\n"));
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break;
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case BadAtom:
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DEBUG_CLIPBOARD(("BadAtom\n"));
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break;
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case BadRequest:
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DEBUG_CLIPBOARD(("BadRequest\n"));
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break;
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case BadAlloc:
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DEBUG_CLIPBOARD(("BadAlloc\n"));
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break;
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case BadMatch:
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DEBUG_CLIPBOARD(("BadMatch\n"));
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break;
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case BadValue:
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DEBUG_CLIPBOARD(("BadValue\n"));
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break;
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case BadWindow:
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DEBUG_CLIPBOARD(("BadWindow\n"));
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break;
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default:
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DEBUG_CLIPBOARD(("Unknown X error code %d\n", res));
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}
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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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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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DEBUG_CLIPBOARD(("res after XChangeProperty is "));
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print_X_error(res);
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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_keyrelease));
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res = XChangeProperty(display,
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xevent->requestor,
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xevent->property,
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XA_INTEGER,
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32,
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PropModeAppend,
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(unsigned char *)&last_keyrelease,
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1);
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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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} else /* Some other target */
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{
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cliprdr_request_clipboard_data(CF_TEXT);
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memcpy(&selection_event, &xev, sizeof(xev));
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/* Return and wait for data, handled by
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cliprdr_handle_server_data */
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}
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}
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static void
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cliprdr_ack_format_list(void)
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{
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STREAM s;
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s = sec_init(encryption ? SEC_ENCRYPT : 0, 20);
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out_uint32_le(s, 12);
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out_uint32_le(s, 0x13);
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out_uint16_le(s, 3);
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out_uint16_le(s, 1);
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out_uint32_le(s, 0);
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out_uint32_le(s, 0x0000c0da);
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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_register_server_formats(STREAM s)
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{
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uint32 remaining_length, pad;
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uint16 num_formats;
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cliprdr_dataformat *this, *next;
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DEBUG_CLIPBOARD(("cliprdr_register_server_formats\n"));
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in_uint32_le(s, remaining_length);
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num_formats = remaining_length / 36;
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if (NULL != server_formats) {
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this = server_formats;
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next = this->next;
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while (NULL != next) {
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xfree(this);
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this = NULL;
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this = next;
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next = this->next;
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}
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}
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this = xmalloc(sizeof(cliprdr_dataformat));
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this->next = NULL;
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server_formats = this;
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num_server_formats = num_formats;
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while (1 < num_formats) {
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in_uint32_le(s, this->identifier);
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in_uint8a(s, this->textual_description, 32);
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DEBUG_CLIPBOARD(("Stored format description with numeric id %d\n",
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this->identifier));
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this-> next = xmalloc(sizeof(cliprdr_dataformat));
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this = this->next;
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num_formats--;
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}
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in_uint32_le(s, this->identifier);
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DEBUG_CLIPBOARD(("Stored format description with numeric id %d\n", this->identifier));
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in_uint8a(s, this->textual_description, 32);
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this -> next = NULL;
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in_uint32_le(s, pad);
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cliprdr_print_server_formats();
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}
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static void
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cliprdr_select_X_clipboards(void)
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{
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XSetSelectionOwner(display, primary_atom, wnd, last_keyrelease);
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if (wnd != XGetSelectionOwner(display, primary_atom))
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{
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warning("Failed to aquire ownership of PRIMARY clipboard\n");
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}
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XSetSelectionOwner(display, clipboard_atom, wnd, CurrentTime);
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if (wnd != XGetSelectionOwner(display, clipboard_atom))
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{
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warning("Failed to aquire ownership of CLIPBOARD clipboard\n");
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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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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, 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_handle_first_handshake(STREAM s)
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{
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uint32 remaining_length, pad;
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in_uint32_le(s, remaining_length);
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in_uint32_le(s, pad);
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DEBUG_CLIPBOARD(("Remaining length in first handshake frm server is %d, pad is %d\n",
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remaining_length, pad));
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cliprdr_send_format_announce();
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}
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void cliprdr_handle_server_data(uint32 length, STREAM s)
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{
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uint32 remaining_length;
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char *data;
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int res;
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in_uint32_le(s, remaining_length);
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data = s->p;
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res = XChangeProperty(display,
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selection_event.requestor,
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selection_event.property,
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XInternAtom(display, "STRING", False),
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8,
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PropModeAppend,
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data,
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remaining_length);
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DEBUG_CLIPBOARD(("res after XChangeProperty is "));
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print_X_error(res);
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res = XSendEvent(display,
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selection_event.requestor,
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False,
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NoEventMask,
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(XEvent *)&selection_event);
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DEBUG_CLIPBOARD(("res after XSendEvent is "));
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print_X_error(res);
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}
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void cliprdr_callback(STREAM s)
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{
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uint32 length, flags;
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uint16 ptype0, ptype1;
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DEBUG_CLIPBOARD(("cliprdr_callback called, clipboard data:\n"));
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#ifdef WITH_DEBUG_CLIPBOARD
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hexdump(s->p, s->end - s->p);
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#endif
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in_uint32_le(s, length);
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in_uint32_le(s, flags);
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DEBUG_CLIPBOARD(("length is %d, flags are %d\n", length, flags));
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if (flags & 0x03 || flags & 0x01) /* Single-write op or first-packet-of-several op */
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{
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in_uint16_le(s, ptype0);
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in_uint16_le(s, ptype1);
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DEBUG_CLIPBOARD(("ptype0 is %d, ptype1 is %d\n", ptype0, ptype1));
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if (1 == ptype0 && 0 == ptype1) {
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cliprdr_handle_first_handshake(s);
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return;
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} else if (3 == ptype0 && 1 == ptype1)
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{
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// Acknowledgment on our format announce. Do we care? Not right now.
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// There is a strange pad in this packet that we might need some time,
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// but probably not.
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DEBUG_CLIPBOARD(("Received format announce ACK\n"));
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return;
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} else if (2 == ptype0 && 0 == ptype1)
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{
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cliprdr_register_server_formats(s);
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cliprdr_select_X_clipboards();
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cliprdr_ack_format_list();
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return;
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} else if (5 == ptype0 && 1 == ptype1)
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{
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cliprdr_handle_server_data(length, s);
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}
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}
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}
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void cliprdr_init(void)
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{
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primary_atom = XInternAtom(display, "PRIMARY", False);
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clipboard_atom = XInternAtom(display, "CLIPBOARD", False);
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targets_atom = XInternAtom(display, "TARGETS", True);
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timestamp_atom = XInternAtom(display, "TIMESTAMP", True);
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}
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