More XDG work I'll probably never need

builder/dockerfile.debian_buster.deb.test

@@ -34,6 +34,11 @@ RUN apt-get purge -y pm-utils xscreensaver*
 RUN apt-get update && apt-get install -y vim less
 RUN apt-get update && apt-get -y install lsb-release
 
+RUN apt-get update && apt-get -y install xdg-desktop-portal firefox-esr
+COPY ./xdg-desktop-portal-gtk_1.2.0-1_amd64.deb /tmp
+RUN apt-get install -y /tmp/xdg-*.deb
+# RUN apt-get install -y xdg-desktop-portal-gtk
+
 RUN echo 'source $STARTUPDIR/generate_container_user' >> $HOME/.bashrc
 
 RUN mkdir -p $STARTUPDIR
@@ -47,8 +52,12 @@ RUN dpkg -i /tmp/*.deb; apt-get -yf install
 
 ### END CUSTOM STUFF ###
 
+RUN sed -i -e 's/about:home/postimages.org/' /usr/lib/firefox-esr/browser/defaults/preferences/firefox.js
+RUN sed -i -e '/browser.startup.firstrunSkipsHomepage/d' /usr/lib/firefox-esr/browser/defaults/preferences/firefox.js
+RUN echo 'pref("browser.startup.firstrunSkipsHomepage", false);' >> /usr/lib/firefox-esr/browser/defaults/preferences/firefox.js
 RUN chown -R 1000:0 $HOME
 USER 1000:ssl-cert
 WORKDIR $HOME
 
+ENV GTK_USE_PORTAL=1
 ENTRYPOINT [ "/dockerstartup/vnc_startup.sh" ]

builder/dockerfile.ubuntu_bionic.deb.test

@@ -33,6 +33,7 @@ RUN apt-get update && apt-get install -y supervisor xfce4 xfce4-terminal xterm l
 RUN apt-get purge -y pm-utils xscreensaver*
 RUN apt-get update && apt-get install -y vim less
 RUN apt-get update && apt-get -y install lsb-release
+RUN apt-get update && apt-get -y install xdg-desktop-portal xdg-desktop-portal-gtk firefox
 
 RUN echo 'source $STARTUPDIR/generate_container_user' >> $HOME/.bashrc
 
@@ -47,8 +48,12 @@ RUN dpkg -i /tmp/*.deb; apt-get -yf install
 
 ### END CUSTOM STUFF ###
 
+RUN echo 'pref("browser.startup.firstrunSkipsHomepage", false);' >> /usr/lib/firefox/browser/defaults/preferences/syspref.js
+RUN echo 'pref("browser.startup.homepage", "postimages.org");' >> /usr/lib/firefox/browser/defaults/preferences/syspref.js
+
 RUN chown -R 1000:0 $HOME
 USER 1000:ssl-cert
 WORKDIR $HOME
 
+ENV GTK_USE_PORTAL=1
 ENTRYPOINT [ "/dockerstartup/vnc_startup.sh" ]

builder/startup/vnc_startup.sh

@@ -88,6 +88,8 @@ detect_www_dir
 detect_cert_location
 [ -n "$KASMVNC_VERBOSE_LOGGING" ] && verbose_logging_option="-log *:stderr:100"
 
+# dbus-daemon --session --address=systemd: --nofork --nopidfile --syslog-only &
+
 echo -e "start vncserver with param: VNC_COL_DEPTH=$VNC_COL_DEPTH, VNC_RESOLUTION=$VNC_RESOLUTION\n..."
 vncserver $DISPLAY -depth $VNC_COL_DEPTH -geometry $VNC_RESOLUTION -FrameRate=$MAX_FRAME_RATE -websocketPort $VNC_PORT $cert_option -sslOnly -interface 0.0.0.0 $VNCOPTIONS $package_www_dir_option $verbose_logging_option #&> $STARTUPDIR/no_vnc_startup.log
 

common/rfb/CMsgHandler.h

@@ -50,7 +50,7 @@ namespace rfb {
                                         int w, int h,
                                         const ScreenSet& layout);
     virtual void setCursor(int width, int height, const Point& hotspot,
-                           const rdr::U8* data) = 0;
+                           const rdr::U8* data, const bool resizing = false) = 0;
     virtual void setPixelFormat(const PixelFormat& pf);
     virtual void setName(const char* name);
     virtual void fence(rdr::U32 flags, unsigned len, const char data[]);

common/rfb/VNCServer.h

@@ -79,7 +79,7 @@ namespace rfb {
     // cursorData argument contains width*height rgba quadruplets with
     // non-premultiplied alpha.
     virtual void setCursor(int width, int height, const Point& hotspot,
-                           const rdr::U8* cursorData) = 0;
+                           const rdr::U8* cursorData, const bool resizing = false) = 0;
 
     // setCursorPos() tells the server the current position of the cursor, and
     // whether the server initiated that change (e.g. through another X11

common/rfb/VNCServerST.cxx

@@ -579,7 +579,7 @@ void VNCServerST::add_copied(const Region& dest, const Point& delta)
 }
 
 void VNCServerST::setCursor(int width, int height, const Point& newHotspot,
-                            const rdr::U8* data)
+                            const rdr::U8* data, const bool resizing)
 {
   delete cursor;
   cursor = new Cursor(width, height, newHotspot, data);
@@ -587,6 +587,13 @@ void VNCServerST::setCursor(int width, int height, const Point& newHotspot,
 
   renderedCursorInvalid = true;
 
+  // If an app has an animated cursor on the resized edge, X internals
+  // will call for it to be rendered. Unlucky for us, the VNC screen
+  // is currently pointing to freed memory, and a cursor change
+  // would want to send a screen update. So, don't do that.
+  if (resizing)
+    return;
+
   std::list<VNCSConnectionST*>::iterator ci, ci_next;
   for (ci = clients.begin(); ci != clients.end(); ci = ci_next) {
     ci_next = ci; ci_next++;

common/rfb/VNCServerST.h

@@ -102,7 +102,7 @@ namespace rfb {
     virtual void add_changed(const Region &region);
     virtual void add_copied(const Region &dest, const Point &delta);
     virtual void setCursor(int width, int height, const Point& hotspot,
-                           const rdr::U8* data);
+                           const rdr::U8* data, const bool resizing = false);
     virtual void setCursorPos(const Point& p, bool warped);
     virtual void setLEDState(unsigned state);
 

unix/xserver/hw/vnc/XserverDesktop.cc

@@ -74,7 +74,7 @@ XserverDesktop::XserverDesktop(int screenIndex_,
   : screenIndex(screenIndex_),
     server(0), listeners(listeners_),
     directFbptr(true),
-    queryConnectId(0), queryConnectTimer(this)
+    queryConnectId(0), queryConnectTimer(this), resizing(false)
 {
   format = pf;
 
@@ -251,7 +251,7 @@ void XserverDesktop::setCursor(int width, int height, int hotX, int hotY,
   }
 
   try {
-    server->setCursor(width, height, Point(hotX, hotY), cursorData);
+    server->setCursor(width, height, Point(hotX, hotY), cursorData, resizing);
   } catch (rdr::Exception& e) {
     vlog.error("XserverDesktop::setCursor: %s",e.str());
   }
@@ -462,8 +462,11 @@ unsigned int XserverDesktop::setScreenLayout(int fb_width, int fb_height,
   layout.print(buffer, sizeof(buffer));
   vlog.debug("%s", buffer);
 
+  resizing = true;
   vncSetGlueContext(screenIndex);
-  return ::setScreenLayout(fb_width, fb_height, layout, &outputIdMap);
+  const unsigned int ret = ::setScreenLayout(fb_width, fb_height, layout, &outputIdMap);
+  resizing = false;
+  return ret;
 }
 
 void XserverDesktop::handleClipboardRequest()

unix/xserver/hw/vnc/XserverDesktop.h

@@ -132,5 +132,7 @@ private:
   OutputIdMap outputIdMap;
 
   rfb::Point oldCursorPos;
+
+  bool resizing;
 };
 #endif