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-rw-r--r--nxcompshad/src/Shadow.cpp480
1 files changed, 480 insertions, 0 deletions
diff --git a/nxcompshad/src/Shadow.cpp b/nxcompshad/src/Shadow.cpp
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+/**************************************************************************/
+/* */
+/* Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com) */
+/* Copyright (c) 2008-2014 Oleksandr Shneyder <o.shneyder@phoca-gmbh.de> */
+/* Copyright (c) 2014-2016 Ulrich Sibiller <uli42@gmx.de> */
+/* Copyright (c) 2014-2016 Mihai Moldovan <ionic@ionic.de> */
+/* Copyright (c) 2011-2016 Mike Gabriel <mike.gabriel@das-netzwerkteam.de>*/
+/* Copyright (c) 2015-2016 Qindel Group (http://www.qindel.com) */
+/* */
+/* NXCOMPSHAD, NX protocol compression and NX extensions to this software */
+/* are copyright of the aforementioned persons and companies. */
+/* */
+/* Redistribution and use of the present software is allowed according */
+/* to terms specified in the file LICENSE which comes in the source */
+/* distribution. */
+/* */
+/* All rights reserved. */
+/* */
+/* NOTE: This software has received contributions from various other */
+/* contributors, only the core maintainers and supporters are listed as */
+/* copyright holders. Please contact us, if you feel you should be listed */
+/* as copyright holder, as well. */
+/* */
+/**************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <signal.h>
+#include <string.h>
+
+#define PANIC
+#define WARNING
+#undef TEST
+#undef DEBUG
+
+#include "Logger.h"
+#include "Shadow.h"
+#include "Poller.h"
+#include "Manager.h"
+
+typedef struct {
+ KeySym *map;
+ KeyCode minKeyCode,
+ maxKeyCode;
+ int mapWidth;
+} KeySymsRec, *KeySymsPtr;
+
+KeySymsPtr NXShadowKeymap = NULL;
+
+ShadowOptions NXShadowOptions = {1, 1, -1};
+
+static int mirrorException = 0;
+
+static UpdateManager *updateManager;
+static Poller *poller;
+static Input *input;
+
+inline bool NXShadowNotInitialized()
+{
+ //
+ // updateManager depends on input and poller.
+ // So this test seem redundant.
+ //
+ // return (input == NULL) || (poller == NULL) || (updateManager == NULL);
+ //
+
+ return (updateManager == NULL);
+}
+
+#ifdef NEED_SIGNAL_HANDLER
+static void NXSignalHandler(int signal)
+{
+ logTest("NXSignalHandler", "Got signal [%d]", signal);
+
+ if (signal == SIGINT)
+ {
+ mirrorException = 1;
+ }
+ else if (signal == SIGTERM)
+ {
+ mirrorException = 1;
+ }
+}
+
+static int NXInitSignal()
+{
+ logTrace("NXInitSignal");
+
+ struct sigaction sa;
+
+ sa.sa_handler = NXSignalHandler;
+ sigfillset(&sa.sa_mask);
+ sa.sa_flags = 0;
+
+ int res;
+
+ while ((res = sigaction(SIGINT, &sa, NULL)) == -1 &&
+ errno == EINTR);
+
+ if (res == -1)
+ {
+ logError("NXInitSignal", EGET());
+
+ return -1;
+ }
+
+ return 1;
+}
+#endif
+
+static void NXHandleException()
+{
+ if (mirrorException)
+ {
+ mirrorException = 0;
+
+ NXShadowRemoveAllUpdaters();
+ }
+}
+
+static int NXCreateInput(char *keymap, char *shadowDisplayName)
+{
+ logTrace("NXCreateInput");
+
+ input = new Input;
+
+ if (input == NULL)
+ {
+ logError("NXCreateInput", ESET(ENOMEM));
+
+ return -1;
+ }
+
+ input -> setKeymap(keymap);
+
+ input -> setShadowDisplayName(shadowDisplayName);
+
+ return 1;
+}
+
+static int NXCreatePoller(Display *display, Display **shadowDisplay)
+{
+ logTrace("NXCreatePoller");
+
+ if (input == NULL)
+ {
+ logError("NXCreatePoller", ESET(EBADF));
+
+ return -1;
+ }
+
+ poller = new Poller(input,display);
+
+ if (poller == NULL)
+ {
+ logError("NXCreatePoller", ESET(ENOMEM));
+
+ return -1;
+ }
+
+ if (poller -> init() == -1)
+ {
+ logWarning("NXCreatePoller", "Failed to initialize poller.");
+
+ return -1;
+ }
+
+ *shadowDisplay = poller -> getShadowDisplay();
+
+ logTest("NXCreatePoller", "Poller geometry [%d, %d], ShadowDisplay[%p].", poller -> width(),
+ poller -> height(), (Display *) *shadowDisplay);
+
+ return 1;
+}
+
+static int NXCreateUpdateManager()
+{
+ logTrace("NXCreateUpdateManager");
+
+ if (input == NULL || poller == NULL)
+ {
+ logError("NXCreateUpdateManager", ESET(EBADF));
+
+ return -1;
+ }
+
+ updateManager = new UpdateManager(poller -> width(), poller -> height(),
+ poller -> getFrameBuffer(), input);
+
+ if (updateManager == NULL)
+ {
+ logError("NXCreateUpdateManager", ESET(ENOMEM));
+
+ return -1;
+ }
+
+ return 1;
+}
+
+void NXShadowResetOptions()
+{
+ NXShadowOptions.optionShmExtension = 1;
+ NXShadowOptions.optionDamageExtension = 1;
+}
+
+//
+// Exported functions.
+//
+
+int NXShadowHasUpdaters()
+{
+ logTrace("NXShadowHasUpdaters");
+
+ return (updateManager && updateManager -> numberOfUpdaters()) ? 1 : 0;
+}
+
+int NXShadowRemoveAllUpdaters()
+{
+ logTrace("NXShadowRemoveAllUpdaters");
+
+ return updateManager ? updateManager -> removeAllUpdaters() : 0;
+}
+
+int NXShadowRemoveUpdater(UpdaterHandle handle)
+{
+ logTrace("NXShadowRemoveUpdater");
+
+ return updateManager ? updateManager -> removeUpdater(handle) : 0;
+}
+
+UpdaterHandle NXShadowAddUpdater(char *displayName)
+{
+ logTrace("NXShadowAddUpdater");
+
+ return updateManager ? updateManager -> addUpdater(displayName, NULL) : NULL;
+}
+
+int NXShadowAddUpdaterDisplay(void *dpy, int *w, int *h, unsigned char *d)
+{
+ Display *display = reinterpret_cast<Display*>(dpy);
+
+ logTrace("NXShadowAddUpdaterDisplay");
+
+ if ((updateManager ? updateManager -> addUpdater(NULL, display) : NULL) == NULL)
+ {
+ logTest("NXShadowAddUpdaterDisplay", "Error");
+
+ return 0;
+ }
+
+ *w = updateManager -> getWidth();
+ *h = updateManager -> getHeight();
+ *d = poller -> depth();
+
+ return 1;
+}
+
+int NXShadowCreate(void *dpy, char *keymap, char* shadowDisplayName, void **shadowDpy)
+{
+ logTrace("NXShadowCreate");
+
+ Display *display = reinterpret_cast<Display*>(dpy);
+ Display **shadowDisplay = reinterpret_cast<Display**>(shadowDpy);
+
+/* if (NXInitSignal() != 1)
+ {
+ logError("NXShadowCreate", EGET());
+
+ return -1;
+ }*/
+
+ if (NXCreateInput(keymap, shadowDisplayName) != 1)
+ {
+ logError("NXShadowCreate", EGET());
+
+ return -1;
+ }
+
+ if (NXCreatePoller(display, shadowDisplay) != 1)
+ {
+ logWarning("NXShadowCreate", "NXCreatePoller failed.");
+
+ return -1;
+ }
+
+ if (NXCreateUpdateManager() != 1)
+ {
+ logError("NXShadowCreate", EGET());
+
+ return -1;
+ }
+
+ return 1;
+}
+
+#if !defined(__CYGWIN32__) && !defined(WIN32)
+
+void NXShadowSetDisplayUid(int uid)
+{
+ NXShadowOptions.optionShadowDisplayUid = uid;
+}
+
+void NXShadowDisableShm(void)
+{
+ logUser("NXShadowDisableShm: Disabling SHM.\n");
+
+ NXShadowOptions.optionShmExtension = 0;
+}
+
+void NXShadowDisableDamage(void)
+{
+ NXShadowOptions.optionDamageExtension = 0;
+}
+
+void NXShadowGetScreenSize(int *w, int *h)
+{
+ poller -> getScreenSize(w, h);
+}
+
+void NXShadowSetScreenSize(int *w, int *h)
+{
+ poller -> setScreenSize(w, h);
+}
+
+#endif
+
+void NXShadowDestroy()
+{
+ if (poller)
+ {
+ delete poller;
+
+ poller = NULL;
+ }
+
+ if (updateManager)
+ {
+ delete updateManager;
+
+ updateManager = NULL;
+ }
+
+ if (input)
+ {
+ delete input;
+
+ input = NULL;
+ }
+}
+
+void NXShadowHandleInput()
+{
+ logTrace("NXShadowHandleInput");
+
+ if (NXShadowNotInitialized())
+ {
+ logError("NXShadowHandleInput - NXShadow not properly initialized.", ESET(EBADF));
+
+ return;
+ }
+
+ NXHandleException();
+
+ updateManager -> handleInput();
+
+ poller -> handleInput();
+}
+
+int NXShadowHasChanged(int (*callback)(void *), void *arg, int *suspended)
+{
+ int result;
+
+ logTrace("NXShadowHasChanged");
+
+ if (NXShadowNotInitialized())
+ {
+ logError("NXShadowHasChanged - NXShadow not properly initialized.", ESET(EBADF));
+
+ return -1;
+ }
+
+ //
+ // FIXME
+ //updateManager -> destroyUpdateManagerRegion();
+ //
+
+ updateManager -> newRegion();
+
+#if !defined(__CYGWIN32__) && !defined(WIN32)
+ poller -> getEvents();
+#endif
+
+ result = poller -> isChanged(callback, arg, suspended);
+
+ if (result == 1)
+ {
+ updateManager -> addRegion(poller -> lastUpdatedRegion());
+
+ return 1;
+ }
+ else if (result == -1)
+ {
+ logTest("NXShadowHasChanged", "Scanline error.");
+ return -1;
+ }
+
+ return 0;
+}
+
+void NXShadowExportChanges(long *numRects, char **pBox)
+{
+ Region pReg;
+
+ logTrace("NXShadowExportChanges");
+
+ if (NXShadowNotInitialized())
+ {
+ logError("NXShadowExportChanges - NXShadow not properly initialized.", ESET(EBADF));
+ }
+
+ updateManager -> update();
+ pReg = updateManager -> getUpdateManagerRegion();
+ *numRects = pReg -> numRects;
+ *pBox = (char *)pReg -> rects;
+
+ logTest("NXShadowExportChanges", "numRects [%ld] pBox[%p], pReg->numRects[%ld], rects[%p], size[%lu]",
+ *numRects, *pBox, pReg -> numRects, &(pReg -> rects -> x2),
+ (unsigned long) sizeof(pReg -> rects -> x2));
+}
+
+void NXShadowEvent(Display *display, XEvent event)
+{
+ poller -> handleEvent(display, &event);
+}
+
+void NXShadowWebKeyEvent(KeySym keysym, Bool isKeyPress)
+{
+ poller -> handleWebKeyEvent(keysym, isKeyPress);
+}
+
+#ifdef __CYGWIN32__
+
+int NXShadowCaptureCursor(unsigned int wnd, void *vis)
+{
+ Window window = (Window)wnd;
+ Visual *visual = reinterpret_cast<Visual*>(vis);
+
+ logTrace("NXShadowCaptureCursor");
+
+ logTest("NXShadowCaptureCursor","Init");
+
+ return poller -> updateCursor(window, visual);
+}
+
+#endif
+
+void NXShadowUpdateBuffer(void **buffer)
+{
+ char **fBuffer = reinterpret_cast<char **>(buffer);
+
+ if (*fBuffer != NULL)
+ {
+ poller -> destroyFrameBuffer();
+
+ poller -> init();
+ }
+
+ *fBuffer = poller -> getFrameBuffer();
+
+ logTest("NXShadowUpdateBuffer","New frame buffer [0x%p]", (void *)*fBuffer);
+}
+
+void NXShadowInitKeymap(void *keysyms)
+{
+ NXShadowKeymap = (KeySymsPtr) keysyms;
+
+ logTest("NXShadowInitKeymap","KeySyms pointer [0x%p]", (void *)NXShadowKeymap);
+}