-
Notifications
You must be signed in to change notification settings - Fork 952
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Add clipboard support to x0vncserver
- Loading branch information
Showing
9 changed files
with
344 additions
and
14 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,195 @@ | ||
| /* Copyright (C) 2024 Gaurav Ujjwal. All Rights Reserved. | ||
| * | ||
| * This 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 software 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 software; if not, write to the Free Software | ||
| * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, | ||
| * USA. | ||
| */ | ||
|
|
||
| #include <X11/Xatom.h> | ||
| #include <rfb/Configuration.h> | ||
| #include <rfb/LogWriter.h> | ||
| #include <rfb/util.h> | ||
| #include <x0vncserver/XSelection.h> | ||
|
|
||
| rfb::BoolParameter setPrimary("SetPrimary", | ||
| "Set the PRIMARY as well as the CLIPBOARD selection", | ||
| true); | ||
| rfb::BoolParameter sendPrimary("SendPrimary", | ||
| "Send the PRIMARY as well as the CLIPBOARD selection", | ||
| true); | ||
|
|
||
| static rfb::LogWriter vlog("XSelection"); | ||
|
|
||
| XSelection::XSelection(Display* dpy_, XSelectionHandler* handler_) | ||
| : TXWindow(dpy_, 1, 1, nullptr), handler(handler_), announcedSelection(None) | ||
| { | ||
| probeProperty = XInternAtom(dpy, "TigerVNC_ProbeProperty", False); | ||
| transferProperty = XInternAtom(dpy, "TigerVNC_TransferProperty", False); | ||
| timestampProperty = XInternAtom(dpy, "TigerVNC_TimestampProperty", False); | ||
| setName("TigerVNC Clipboard (x0vncserver)"); | ||
| addEventMask(PropertyChangeMask); // Required for PropertyNotify events | ||
| } | ||
|
|
||
| static Bool PropertyEventMatcher(Display* /* dpy */, XEvent* ev, XPointer prop) | ||
| { | ||
| if (ev->type == PropertyNotify && ev->xproperty.atom == *((Atom*)prop)) | ||
| return True; | ||
| else | ||
| return False; | ||
| } | ||
|
|
||
| Time XSelection::getXServerTime() | ||
| { | ||
| XEvent ev; | ||
| uint8_t data = 0; | ||
|
|
||
| // Trigger a PropertyNotify event to extract server time | ||
| XChangeProperty(dpy, win(), timestampProperty, XA_STRING, 8, PropModeReplace, | ||
| &data, sizeof(data)); | ||
| XIfEvent(dpy, &ev, &PropertyEventMatcher, (XPointer)×tampProperty); | ||
| return ev.xproperty.time; | ||
| } | ||
|
|
||
| // Takes ownership of selections, backed by given data. | ||
| void XSelection::handleClientClipboardData(const char* data) | ||
| { | ||
| vlog.debug("Received client clipboard data, taking selection ownership"); | ||
|
|
||
| Time time = getXServerTime(); | ||
| ownSelection(xaCLIPBOARD, time); | ||
| if (!selectionOwner(xaCLIPBOARD)) | ||
| vlog.error("Unable to own CLIPBOARD selection"); | ||
|
|
||
| if (setPrimary) { | ||
| ownSelection(XA_PRIMARY, time); | ||
| if (!selectionOwner(XA_PRIMARY)) | ||
| vlog.error("Unable to own PRIMARY selection"); | ||
| } | ||
|
|
||
| if (selectionOwner(xaCLIPBOARD) || selectionOwner(XA_PRIMARY)) | ||
| clientData = data; | ||
| } | ||
|
|
||
| // We own the selection and another X app has asked for data | ||
| bool XSelection::selectionRequest(Window requestor, Atom selection, Atom target, | ||
| Atom property) | ||
| { | ||
| if (clientData.empty() || requestor == win() || !selectionOwner(selection)) | ||
| return false; | ||
|
|
||
| if (target == XA_STRING) { | ||
| std::string latin1 = rfb::utf8ToLatin1(clientData.data(), clientData.length()); | ||
| XChangeProperty(dpy, requestor, property, XA_STRING, 8, PropModeReplace, | ||
| (unsigned char*)latin1.data(), latin1.length()); | ||
| return true; | ||
| } | ||
|
|
||
| if (target == xaUTF8_STRING) { | ||
| XChangeProperty(dpy, requestor, property, xaUTF8_STRING, 8, PropModeReplace, | ||
| (unsigned char*)clientData.data(), clientData.length()); | ||
| return true; | ||
| } | ||
|
|
||
| return false; | ||
| } | ||
|
|
||
| // Selection-owner change implies a change in selection data. | ||
| void XSelection::handleSelectionOwnerChange(Window owner, Atom selection, Time time) | ||
| { | ||
| if (selection != XA_PRIMARY && selection != xaCLIPBOARD) | ||
| return; | ||
| if (selection == XA_PRIMARY && !sendPrimary) | ||
| return; | ||
|
|
||
| if (selection == announcedSelection) | ||
| announceSelection(None); | ||
|
|
||
| if (owner == None || owner == win()) | ||
| return; | ||
|
|
||
| if (!selectionOwner(XA_PRIMARY) && !selectionOwner(xaCLIPBOARD)) | ||
| clientData = ""; | ||
|
|
||
| XConvertSelection(dpy, selection, xaTARGETS, probeProperty, win(), time); | ||
| } | ||
|
|
||
| void XSelection::announceSelection(Atom selection) | ||
| { | ||
| announcedSelection = selection; | ||
| handler->handleXSelectionAnnounce(selection != None); | ||
| } | ||
|
|
||
| void XSelection::requestSelectionData() | ||
| { | ||
| if (announcedSelection != None) | ||
| XConvertSelection(dpy, announcedSelection, xaTARGETS, transferProperty, win(), | ||
| CurrentTime); | ||
| } | ||
|
|
||
| // Some information about selection is received from current owner | ||
| void XSelection::selectionNotify(XSelectionEvent* ev, Atom type, int format, | ||
| int nitems, void* data) | ||
| { | ||
| if (!ev || !data || type == None) | ||
| return; | ||
|
|
||
| if (ev->target == xaTARGETS) { | ||
| if (format != 32 || type != XA_ATOM) | ||
| return; | ||
|
|
||
| Atom* targets = (Atom*)data; | ||
| bool utf8Supported = false; | ||
| bool stringSupported = false; | ||
|
|
||
| for (int i = 0; i < nitems; i++) { | ||
| if (targets[i] == xaUTF8_STRING) | ||
| utf8Supported = true; | ||
| else if (targets[i] == XA_STRING) | ||
| stringSupported = true; | ||
| } | ||
|
|
||
| if (ev->property == probeProperty) { | ||
| // Only probing for now, will issue real request when client asks for data | ||
| if (stringSupported || utf8Supported) | ||
| announceSelection(ev->selection); | ||
| return; | ||
| } | ||
|
|
||
| // Prefer UTF-8 if available | ||
| if (utf8Supported) | ||
| XConvertSelection(dpy, ev->selection, xaUTF8_STRING, transferProperty, win(), | ||
| ev->time); | ||
| else if (stringSupported) | ||
| XConvertSelection(dpy, ev->selection, XA_STRING, transferProperty, win(), | ||
| ev->time); | ||
| } else if (ev->target == xaUTF8_STRING || ev->target == XA_STRING) { | ||
| if (type == xaINCR) { | ||
| // Incremental transfer is not supported | ||
| vlog.debug("Selected data is too big!"); | ||
| return; | ||
| } | ||
|
|
||
| if (format != 8) | ||
| return; | ||
|
|
||
| if (type == xaUTF8_STRING) { | ||
| std::string result = rfb::convertLF((char*)data, nitems); | ||
| handler->handleXSelectionData(result.c_str()); | ||
| } else if (type == XA_STRING) { | ||
| std::string result = rfb::convertLF((char*)data, nitems); | ||
| result = rfb::latin1ToUTF8(result.data(), result.length()); | ||
| handler->handleXSelectionData(result.c_str()); | ||
| } | ||
| } | ||
| } |
Oops, something went wrong.