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[client] spice: implement full clipboard guest copy support

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This commit is contained in:
Geoffrey McRae 2019-02-23 04:24:30 +11:00
parent de0b54ae70
commit 0a2fbe1f7f
5 changed files with 246 additions and 36 deletions
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168
client/clipboard/x11.c
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@ -18,25 +18,187 @@ Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "lg-clipboard.h"
#include <stdbool.h>
#include "debug.h"
struct state
{
Display * display;
Window window;
Atom aSelection;
Atom aTargets;
Atom aTypes[LG_CLIPBOARD_DATA_MAX];
LG_ClipboardRequestFn requestFn;
LG_ClipboardData type;
};
static struct state * this = NULL;
static const char * atomTypes[] =
{
"UTF8_STRING",
"image/png",
"image/bmp",
"image/tiff",
"image/jpeg"
};
static const char * x11_cb_getName()
{
return "X11";
}
static bool x11_cb_init()
static bool x11_cb_init(SDL_SysWMinfo * wminfo)
{
// final sanity check
if (wminfo->subsystem != SDL_SYSWM_X11)
{
DEBUG_ERROR("wrong subsystem");
return false;
}
this = (struct state *)malloc(sizeof(struct state));
memset(this, 0, sizeof(struct state));
this->display = wminfo->info.x11.display;
this->window = wminfo->info.x11.window;
this->aSelection = XInternAtom(this->display, "CLIPBOARD", False);
this->aTargets = XInternAtom(this->display, "TARGETS" , False);
for(int i = 0; i < LG_CLIPBOARD_DATA_MAX; ++i)
{
this->aTypes[i] = XInternAtom(this->display, atomTypes[i], False);
if (this->aTypes[i] == BadAlloc || this->aTypes[i] == BadValue)
{
DEBUG_ERROR("failed to get atom for type: %s", atomTypes[i]);
free(this);
this = NULL;
return false;
}
}
// we need the raw X events
SDL_EventState(SDL_SYSWMEVENT, SDL_ENABLE);
return true;
}
static void x11_cb_free()
{
free(this);
this = NULL;
}
static void x11_cb_reply_fn(void * opaque, LG_ClipboardData type, uint8_t * data, uint32_t size)
{
XEvent *s = (XEvent *)opaque;
XChangeProperty(
this->display ,
s->xselection.requestor,
s->xselection.property ,
s->xselection.target ,
8,
PropModeReplace,
data,
size);
XSendEvent(this->display, s->xselection.requestor, 0, 0, s);
XFlush(this->display);
free(s);
}
static void x11_cb_wmevent(SDL_SysWMmsg * msg)
{
XEvent e = msg->msg.x11.event;
if (e.type == SelectionRequest)
{
XEvent * s = (XEvent *)malloc(sizeof(XEvent));
s->xselection.type = SelectionNotify;
s->xselection.requestor = e.xselectionrequest.requestor;
s->xselection.selection = e.xselectionrequest.selection;
s->xselection.target = e.xselectionrequest.target;
s->xselection.property = e.xselectionrequest.property;
s->xselection.time = e.xselectionrequest.time;
if (!this->requestFn)
{
s->xselection.property = None;
XSendEvent(this->display, e.xselectionrequest.requestor, 0, 0, s);
XFlush(this->display);
free(s);
return;
}
// target list requested
if (e.xselectionrequest.target == this->aTargets)
{
Atom targets[2];
targets[0] = this->aTargets;
targets[1] = this->aTypes[this->type];
XChangeProperty(
e.xselectionrequest.display,
e.xselectionrequest.requestor,
e.xselectionrequest.property,
XA_ATOM,
32,
PropModeReplace,
(unsigned char*)targets,
sizeof(targets) / sizeof(Atom));
XSendEvent(this->display, e.xselectionrequest.requestor, 0, 0, s);
XFlush(this->display);
free(s);
return;
}
// look to see if we can satisfy the data type
for(int i = 0; i < LG_CLIPBOARD_DATA_MAX; ++i)
if (this->aTypes[i] == e.xselectionrequest.target && this->type == i)
{
// request the data
this->requestFn(x11_cb_reply_fn, s);
return;
}
DEBUG_INFO("Unable to copy \"%s\" to \"%s\" type",
atomTypes[this->type],
XGetAtomName(this->display, e.xselectionrequest.target));
// report no data
s->xselection.property = None;
XSendEvent(this->display, e.xselectionrequest.requestor, 0, 0, s);
XFlush(this->display);
}
if (e.type == SelectionNotify)
{
DEBUG_WARN("FIXME: SelectionNotify");
return;
}
if (e.type == SelectionClear)
{
DEBUG_WARN("FIXME: SelectionClear");
return;
}
}
static void x11_cb_notice(LG_ClipboardRequestFn requestFn, LG_ClipboardData type)
{
this->requestFn = requestFn;
this->type = type;
XSetSelectionOwner(this->display, XA_PRIMARY , this->window, CurrentTime);
XSetSelectionOwner(this->display, this->aSelection, this->window, CurrentTime);
XFlush(this->display);
}
const LG_Clipboard LGC_X11 =
{
.getName = x11_cb_getName,
.init = x11_cb_init,
.free = x11_cb_free
.free = x11_cb_free,
.wmevent = x11_cb_wmevent,
.notice = x11_cb_notice
};

22
client/lg-clipboard.h
View File

@ -20,16 +20,36 @@ Place, Suite 330, Boston, MA 02111-1307 USA
#pragma once
#include <stdbool.h>
#include <SDL2/SDL.h>
#include <SDL2/SDL_syswm.h>
typedef enum LG_ClipboardData
{
LG_CLIPBOARD_DATA_TEXT = 0,
LG_CLIPBOARD_DATA_PNG,
LG_CLIPBOARD_DATA_BMP,
LG_CLIPBOARD_DATA_TIFF,
LG_CLIPBOARD_DATA_JPEG,
LG_CLIPBOARD_DATA_MAX // enum max, not a data type
}
LG_ClipboardData;
typedef void (* LG_ClipboardReplyFn )(void * opaque, LG_ClipboardData type, uint8_t * data, uint32_t size);
typedef void (* LG_ClipboardRequestFn)(LG_ClipboardReplyFn replyFn, void * opaque);
typedef const char * (* LG_ClipboardGetName)();
typedef bool (* LG_ClipboardInit)();
typedef bool (* LG_ClipboardInit)(SDL_SysWMinfo * wminfo);
typedef void (* LG_ClipboardFree)();
typedef void (* LG_ClipboardWMEvent)(SDL_SysWMmsg * msg);
typedef void (* LG_ClipboardNotice)(LG_ClipboardRequestFn requestFn, LG_ClipboardData type);
typedef struct LG_Clipboard
{
LG_ClipboardGetName getName;
LG_ClipboardInit init;
LG_ClipboardFree free;
LG_ClipboardWMEvent wmevent;
LG_ClipboardNotice notice;
}
LG_Clipboard;

80
client/main.c
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@ -64,6 +64,9 @@ struct AppState
bool lgrResize;
const LG_Clipboard * lgc;
SpiceDataType cbType;
LG_ClipboardReplyFn cbReplyFn;
void * cbReplyData;
SDL_Window * window;
int shmFD;
@ -489,26 +492,50 @@ static inline const uint32_t mapScancode(SDL_Scancode scancode)
return ps2;
}
void clipboardRequestFn(const LG_ClipboardReplyFn replyFn, void * opaque)
{
state.cbReplyData = opaque;
state.cbReplyFn = replyFn;
spice_clipboard_request(state.cbType);
}
void spiceClipboardNotice(const SpiceDataType type)
{
// we only support text data for now
if (type == SPICE_DATA_TEXT)
spice_clipboard_request(type);
if (!state.lgc || !state.lgc->notice)
return;
state.cbType = type;
LG_ClipboardData t;
switch(type)
{
case LG_CLIPBOARD_DATA_TEXT: t = SPICE_DATA_TEXT; break;
case LG_CLIPBOARD_DATA_PNG : t = SPICE_DATA_PNG ; break;
case LG_CLIPBOARD_DATA_BMP : t = SPICE_DATA_BMP ; break;
case LG_CLIPBOARD_DATA_TIFF: t = SPICE_DATA_TIFF; break;
case LG_CLIPBOARD_DATA_JPEG: t = SPICE_DATA_JPEG; break;
}
state.lgc->notice(clipboardRequestFn, t);
}
void spiceClipboardData(const SpiceDataType type, uint8_t * buffer, uint32_t size)
{
// dos2unix
uint8_t * p = buffer;
for(uint32_t i = 0; i < size; ++i)
if (type == SPICE_DATA_TEXT)
{
uint8_t c = buffer[i];
if (c != '\r')
*p++ = c;
// dos2unix
uint8_t * p = buffer;
for(uint32_t i = 0; i < size; ++i)
{
uint8_t c = buffer[i];
if (c != '\r')
*p++ = c;
}
*p = '\0';
}
*p = '\0';
SDL_SetClipboardText((char *)buffer);
state.cbReplyFn(state.cbReplyData, type, buffer, size);
}
int eventFilter(void * userdata, SDL_Event * event)
@ -548,6 +575,13 @@ int eventFilter(void * userdata, SDL_Event * event)
switch(event->type)
{
case SDL_SYSWMEVENT:
{
if (state.lgc && state.lgc->wmevent)
state.lgc->wmevent(event->syswm.msg);
return 0;
}
case SDL_MOUSEMOTION:
{
if (
@ -893,18 +927,6 @@ int run()
return 1;
}
// choose a clipboard api
for(unsigned int i = 0; i < LG_CLIPBOARD_COUNT; ++i)
{
const LG_Clipboard * cb = LG_Clipboards[i];
if (cb->init())
{
state.lgc = cb;
DEBUG_INFO("Using Clipboard: %s", cb->getName());
break;
}
}
if (params.fullscreen)
SDL_SetHint(SDL_HINT_VIDEO_MINIMIZE_ON_FOCUS_LOSS, "0");
@ -943,6 +965,8 @@ int run()
(unsigned char *)&value,
1
);
state.lgc = &LGC_X11;
}
} else {
DEBUG_ERROR("Could not get SDL window information %s", SDL_GetError());
@ -955,6 +979,16 @@ int run()
return -1;
}
if (state.lgc)
{
DEBUG_INFO("Using Clipboard: %s", state.lgc->getName());
if (!state.lgc->init(&wminfo))
{
DEBUG_WARN("Failed to initialize the clipboard interface, continuing anyway");
state.lgc = NULL;
}
}
SDL_Cursor *cursor = NULL;
if (params.hideMouse)
{

10
client/spice/spice.c
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@ -1026,12 +1026,6 @@ bool spice_agent_process(uint32_t dataSize)
if (msg.type == VD_AGENT_CLIPBOARD)
{
DEBUG_PROTO("VD_AGENT_CLIPBOARD");
if (type != VD_AGENT_CLIPBOARD_UTF8_TEXT)
{
DEBUG_ERROR("for some reason we were sent a non text clipboard, this shouldn't happen");
return false;
}
if (spice.cbBuffer)
{
DEBUG_ERROR("cbBuffer was never freed");
@ -1089,7 +1083,7 @@ bool spice_agent_process(uint32_t dataSize)
case VD_AGENT_CLIPBOARD_IMAGE_PNG : spice.cbType = SPICE_DATA_PNG ; break;
case VD_AGENT_CLIPBOARD_IMAGE_BMP : spice.cbType = SPICE_DATA_BMP ; break;
case VD_AGENT_CLIPBOARD_IMAGE_TIFF: spice.cbType = SPICE_DATA_TIFF; break;
case VD_AGENT_CLIPBOARD_IMAGE_JPG : spice.cbType = SPICE_DATA_JPG ; break;
case VD_AGENT_CLIPBOARD_IMAGE_JPG : spice.cbType = SPICE_DATA_JPEG; break;
default:
DEBUG_WARN("Unknown clipboard data type: %u", types[0]);
return true;
@ -1483,7 +1477,7 @@ bool spice_clipboard_request(SpiceDataType type)
case SPICE_DATA_PNG : req.type = VD_AGENT_CLIPBOARD_IMAGE_PNG ; break;
case SPICE_DATA_BMP : req.type = VD_AGENT_CLIPBOARD_IMAGE_BMP ; break;
case SPICE_DATA_TIFF: req.type = VD_AGENT_CLIPBOARD_IMAGE_TIFF; break;
case SPICE_DATA_JPG : req.type = VD_AGENT_CLIPBOARD_IMAGE_JPG ; break;
case SPICE_DATA_JPEG: req.type = VD_AGENT_CLIPBOARD_IMAGE_JPG ; break;
default:
DEBUG_ERROR("invalid clipboard data type requested");
return false;

2
client/spice/spice.h
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@ -27,7 +27,7 @@ typedef enum SpiceDataType
SPICE_DATA_PNG,
SPICE_DATA_BMP,
SPICE_DATA_TIFF,
SPICE_DATA_JPG
SPICE_DATA_JPEG
}
SpiceDataType;