Merge pull request #36 from kasmtech/upstreamsync_sans_novnc

Upstream Syncs

.gitlab-ci.yml

@@ -4,6 +4,7 @@ services:
 
 variables:
   GITLAB_SHARED_DIND_DIR: /builds/$CI_PROJECT_PATH/shared
+  GIT_SUBMODULE_STRATEGY: normal
   GIT_FETCH_EXTRA_FLAGS: --tags
 
 stages:

.gitmodules

@@ -0,0 +1,4 @@
+[submodule "kasmweb"]
+	path = kasmweb
+	url = https://github.com/kasmtech/noVNC.git
+	branch = master

builder/build_www.sh

@@ -14,6 +14,5 @@ cp -R ./* /build/
 cd /build
 rm *.md
 rm AUTHORS
-rm *.yml
 rm vnc.html
 rm vnc_lite.html

common/network/Socket.cxx

@@ -25,6 +25,9 @@
 #include <winsock2.h>
 #include <ws2tcpip.h>
 #define errorNumber WSAGetLastError()
+#define SHUT_RD SD_RECEIVE
+#define SHUT_WR SD_SEND
+#define SHUT_RDWR SD_BOTH
 #else
 #define errorNumber errno
 #define closesocket close
@@ -94,7 +97,7 @@ Socket::~Socket()
 void Socket::shutdown()
 {
   isShutdown_ = true;
-  ::shutdown(getFd(), 2);
+  ::shutdown(getFd(), SHUT_RDWR);
 }
 
 bool Socket::isShutdown() const
@@ -149,7 +152,7 @@ void SocketListener::shutdown()
   closesocket(fd);
   fd = -1;
 #else
-  ::shutdown(fd, 2);
+  ::shutdown(fd, SHUT_RDWR);
 #endif
 }
 

common/rdr/BufferedInStream.cxx

@@ -0,0 +1,69 @@
+/* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
+ * Copyright 2020 Pierre Ossman for Cendio AB
+ * 
+ * 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <rdr/BufferedInStream.h>
+#include <rdr/Exception.h>
+
+using namespace rdr;
+
+static const size_t DEFAULT_BUF_SIZE = 8192;
+
+BufferedInStream::BufferedInStream()
+  : bufSize(DEFAULT_BUF_SIZE), offset(0)
+{
+  ptr = end = start = new U8[bufSize];
+}
+
+BufferedInStream::~BufferedInStream()
+{
+  delete [] start;
+}
+
+size_t BufferedInStream::pos()
+{
+  return offset + ptr - start;
+}
+
+bool BufferedInStream::overrun(size_t needed, bool wait)
+{
+  if (needed > bufSize)
+    throw Exception("BufferedInStream overrun: "
+                    "requested size of %lu bytes exceeds maximum of %lu bytes",
+                    (long unsigned)needed, (long unsigned)bufSize);
+
+  // Do we need to shuffle things around?
+  if ((bufSize - (ptr - start)) < needed) {
+    memmove(start, ptr, end - ptr);
+
+    offset += ptr - start;
+    end -= ptr - start;
+    ptr = start;
+  }
+
+  while (avail() < needed) {
+    if (!fillBuffer(start + bufSize - end, wait))
+      return false;
+  }
+
+  return true;
+}

common/rdr/BufferedInStream.h

@@ -0,0 +1,54 @@
+/* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
+ * Copyright 2020 Pierre Ossman for Cendio AB
+ * 
+ * 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.
+ */
+
+//
+// Base class for input streams with a buffer
+//
+
+#ifndef __RDR_BUFFEREDINSTREAM_H__
+#define __RDR_BUFFEREDINSTREAM_H__
+
+#include <rdr/InStream.h>
+
+namespace rdr {
+
+  class BufferedInStream : public InStream {
+
+  public:
+    virtual ~BufferedInStream();
+
+    virtual size_t pos();
+
+  private:
+    virtual bool fillBuffer(size_t maxSize, bool wait) = 0;
+
+    virtual bool overrun(size_t needed, bool wait);
+
+  private:
+    size_t bufSize;
+    size_t offset;
+    U8* start;
+
+  protected:
+    BufferedInStream();
+  };
+
+} // end of namespace rdr
+
+#endif

common/rdr/BufferedOutStream.cxx

@@ -0,0 +1,108 @@
+/* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
+ * Copyright 2011-2020 Pierre Ossman for Cendio AB
+ * Copyright 2017 Peter Astrand <astrand@cendio.se> for Cendio AB
+ * 
+ * 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <rdr/BufferedOutStream.h>
+#include <rdr/Exception.h>
+
+
+using namespace rdr;
+
+static const size_t DEFAULT_BUF_SIZE = 16384;
+
+BufferedOutStream::BufferedOutStream()
+  : bufSize(DEFAULT_BUF_SIZE), offset(0)
+{
+  ptr = start = sentUpTo = new U8[bufSize];
+  end = start + bufSize;
+}
+
+BufferedOutStream::~BufferedOutStream()
+{
+  // FIXME: Complain about non-flushed buffer?
+  delete [] start;
+}
+
+size_t BufferedOutStream::length()
+{
+  return offset + ptr - sentUpTo;
+}
+
+size_t BufferedOutStream::bufferUsage()
+{
+  return ptr - sentUpTo;
+}
+
+void BufferedOutStream::flush()
+{
+  while (sentUpTo < ptr) {
+    size_t len;
+
+    len = bufferUsage();
+
+    if (!flushBuffer(false))
+      break;
+
+    offset += len - bufferUsage();
+  }
+
+  // Managed to flush everything?
+  if (sentUpTo == ptr)
+    ptr = sentUpTo = start;
+}
+
+void BufferedOutStream::overrun(size_t needed)
+{
+  if (needed > bufSize)
+    throw Exception("BufferedOutStream overrun: "
+                    "requested size of %lu bytes exceeds maximum of %lu bytes",
+                    (long unsigned)needed, (long unsigned)bufSize);
+
+  // First try to get rid of the data we have
+  flush();
+
+  // Still not enough space?
+  while (needed > avail()) {
+    // Can we shuffle things around?
+    // (don't do this if it gains us less than 25%)
+    if (((size_t)(sentUpTo - start) > bufSize / 4) &&
+        (needed < bufSize - (ptr - sentUpTo))) {
+      memmove(start, sentUpTo, ptr - sentUpTo);
+      ptr = start + (ptr - sentUpTo);
+      sentUpTo = start;
+    } else {
+      size_t len;
+
+      len = bufferUsage();
+
+      // Have to get rid of more data, so allow the flush to wait...
+      flushBuffer(true);
+
+      offset += len - bufferUsage();
+
+       // Managed to flush everything?
+      if (sentUpTo == ptr)
+        ptr = sentUpTo = start;
+    }
+  }
+}

common/rdr/BufferedOutStream.h

@@ -0,0 +1,65 @@
+/* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
+ * Copyright 2011-2020 Pierre Ossman for Cendio AB
+ * 
+ * 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.
+ */
+
+//
+// Base class for output streams with a buffer
+//
+
+#ifndef __RDR_BUFFEREDOUTSTREAM_H__
+#define __RDR_BUFFEREDOUTSTREAM_H__
+
+#include <rdr/OutStream.h>
+
+namespace rdr {
+
+  class BufferedOutStream : public OutStream {
+
+  public:
+    virtual ~BufferedOutStream();
+
+    virtual size_t length();
+    virtual void flush();
+
+    size_t bufferUsage();
+
+  private:
+    // flushBuffer() requests that the stream be flushed. Returns true if it is
+    // able to progress the output (which might still not mean any bytes
+    // actually moved) and can be called again. If wait is true then it will
+    // block until all data has been written.
+
+    virtual bool flushBuffer(bool wait) = 0;
+
+    virtual void overrun(size_t needed);
+
+  private:
+    size_t bufSize;
+    size_t offset;
+    U8* start;
+
+  protected:
+    U8* sentUpTo;
+
+  protected:
+    BufferedOutStream();
+  };
+
+}
+
+#endif

common/rdr/CMakeLists.txt

@@ -1,6 +1,8 @@
 include_directories(${CMAKE_SOURCE_DIR}/common ${ZLIB_INCLUDE_DIRS})
 
 add_library(rdr STATIC
+  BufferedInStream.cxx
+  BufferedOutStream.cxx
   Exception.cxx
   FdInStream.cxx
   FdOutStream.cxx

common/rdr/FdInStream.cxx

@@ -36,13 +36,6 @@
 #include <unistd.h>
 #endif
 
-#ifndef vncmin
-#define vncmin(a,b)            (((a) < (b)) ? (a) : (b))
-#endif
-#ifndef vncmax
-#define vncmax(a,b)            (((a) > (b)) ? (a) : (b))
-#endif
-
 /* Old systems have select() in sys/time.h */
 #ifdef HAVE_SYS_SELECT_H
 #include <sys/select.h>
@@ -53,31 +46,22 @@
 
 using namespace rdr;
 
-enum { DEFAULT_BUF_SIZE = 8192,
+enum { DEFAULT_BUF_SIZE = 8192 };
-       MIN_BULK_SIZE = 1024 };
 
-FdInStream::FdInStream(int fd_, int timeoutms_, size_t bufSize_,
+FdInStream::FdInStream(int fd_, int timeoutms_,
                        bool closeWhenDone_)
   : fd(fd_), closeWhenDone(closeWhenDone_),
-    timeoutms(timeoutms_), blockCallback(0),
+    timeoutms(timeoutms_), blockCallback(0)
-    timing(false), timeWaitedIn100us(5), timedKbits(0),
-    bufSize(bufSize_ ? bufSize_ : DEFAULT_BUF_SIZE), offset(0)
 {
-  ptr = end = start = new U8[bufSize];
 }
 
-FdInStream::FdInStream(int fd_, FdInStreamBlockCallback* blockCallback_,
+FdInStream::FdInStream(int fd_, FdInStreamBlockCallback* blockCallback_)
-                       size_t bufSize_)
+  : fd(fd_), timeoutms(0), blockCallback(blockCallback_)
-  : fd(fd_), timeoutms(0), blockCallback(blockCallback_),
-    timing(false), timeWaitedIn100us(5), timedKbits(0),
-    bufSize(bufSize_ ? bufSize_ : DEFAULT_BUF_SIZE), offset(0)
 {
-  ptr = end = start = new U8[bufSize];
 }
 
 FdInStream::~FdInStream()
 {
-  delete [] start;
   if (closeWhenDone) close(fd);
 }
 
@@ -92,72 +76,15 @@ void FdInStream::setBlockCallback(FdInStreamBlockCallback* blockCallback_)
   timeoutms = 0;
 }
 
-size_t FdInStream::pos()
-{
-  return offset + ptr - start;
-}
-
-void FdInStream::readBytes(void* data, size_t length)
-{
-  if (length < MIN_BULK_SIZE) {
-    InStream::readBytes(data, length);
-    return;
-  }
-
-  U8* dataPtr = (U8*)data;
-
-  size_t n = end - ptr;
-  if (n > length) n = length;
-
-  memcpy(dataPtr, ptr, n);
-  dataPtr += n;
-  length -= n;
-  ptr += n;
-
-  while (length > 0) {
-    n = readWithTimeoutOrCallback(dataPtr, length);
-    dataPtr += n;
-    length -= n;
-    offset += n;
-  }
-}
-
 
-size_t FdInStream::overrun(size_t itemSize, size_t nItems, bool wait)
+bool FdInStream::fillBuffer(size_t maxSize, bool wait)
 {
-  if (itemSize > bufSize)
+  size_t n = readWithTimeoutOrCallback((U8*)end, maxSize, wait);
-    throw Exception("FdInStream overrun: max itemSize exceeded");
+  if (n == 0)
-
+    return false;
-  if (end - ptr != 0)
+  end += n;
-    memmove(start, ptr, end - ptr);
-
-  offset += ptr - start;
-  end -= ptr - start;
-  ptr = start;
-
-  size_t bytes_to_read;
-  while ((size_t)(end - start) < itemSize) {
-    bytes_to_read = start + bufSize - end;
-    if (!timing) {
-      // When not timing, we must be careful not to read too much
-      // extra data into the buffer. Otherwise, the line speed
-      // estimation might stay at zero for a long time: All reads
-      // during timing=1 can be satisfied without calling
-      // readWithTimeoutOrCallback. However, reading only 1 or 2 bytes
-      // bytes is ineffecient.
-      bytes_to_read = vncmin(bytes_to_read, vncmax(itemSize*nItems, 8));
-    }
-    size_t n = readWithTimeoutOrCallback((U8*)end, bytes_to_read, wait);
-    if (n == 0) return 0;
-    end += n;
-  }
-
-  size_t nAvail;
-  nAvail = (end - ptr) / itemSize;
-  if (nAvail < nItems)
-    return nAvail;
 
-  return nItems;
+  return true;
 }
 
 //
@@ -175,10 +102,6 @@ size_t FdInStream::overrun(size_t itemSize, size_t nItems, bool wait)
 
 size_t FdInStream::readWithTimeoutOrCallback(void* buf, size_t len, bool wait)
 {
-  struct timeval before, after;
-  if (timing)
-    gettimeofday(&before, 0);
-
   int n;
   while (true) {
     do {
@@ -215,48 +138,5 @@ size_t FdInStream::readWithTimeoutOrCallback(void* buf, size_t len, bool wait)
   if (n < 0) throw SystemException("read",errno);
   if (n == 0) throw EndOfStream();
 
-  if (timing) {
-    gettimeofday(&after, 0);
-    int newTimeWaited = ((after.tv_sec - before.tv_sec) * 10000 +
-                         (after.tv_usec - before.tv_usec) / 100);
-    int newKbits = n * 8 / 1000;
-
-    // limit rate to between 10kbit/s and 40Mbit/s
-
-    if (newTimeWaited > newKbits*1000) newTimeWaited = newKbits*1000;
-    if (newTimeWaited < newKbits/4)    newTimeWaited = newKbits/4;
-
-    timeWaitedIn100us += newTimeWaited;
-    timedKbits += newKbits;
-  }
-
   return n;
 }
-
-void FdInStream::startTiming()
-{
-  timing = true;
-
-  // Carry over up to 1s worth of previous rate for smoothing.
-
-  if (timeWaitedIn100us > 10000) {
-    timedKbits = timedKbits * 10000 / timeWaitedIn100us;
-    timeWaitedIn100us = 10000;
-  }
-}
-
-void FdInStream::stopTiming()
-{
-  timing = false; 
-  if (timeWaitedIn100us < timedKbits/2)
-    timeWaitedIn100us = timedKbits/2; // upper limit 20Mbit/s
-}
-
-unsigned int FdInStream::kbitsPerSecond()
-{
-  // The following calculation will overflow 32-bit arithmetic if we have
-  // received more than about 50Mbytes (400Mbits) since we started timing, so
-  // it should be OK for a single RFB update.
-
-  return timedKbits * 10000 / timeWaitedIn100us;
-}

common/rdr/FdInStream.h

@@ -23,7 +23,7 @@
 #ifndef __RDR_FDINSTREAM_H__
 #define __RDR_FDINSTREAM_H__
 
-#include <rdr/InStream.h>
+#include <rdr/BufferedInStream.h>
 
 namespace rdr {
 
@@ -33,31 +33,21 @@ namespace rdr {
     virtual ~FdInStreamBlockCallback() {}
   };
 
-  class FdInStream : public InStream {
+  class FdInStream : public BufferedInStream {
 
   public:
 
-    FdInStream(int fd, int timeoutms=-1, size_t bufSize=0,
+    FdInStream(int fd, int timeoutms=-1, bool closeWhenDone_=false);
-               bool closeWhenDone_=false);
+    FdInStream(int fd, FdInStreamBlockCallback* blockCallback);
-    FdInStream(int fd, FdInStreamBlockCallback* blockCallback,
-               size_t bufSize=0);
     virtual ~FdInStream();
 
     void setTimeout(int timeoutms);
     void setBlockCallback(FdInStreamBlockCallback* blockCallback);
     int getFd() { return fd; }
-    size_t pos();
-    void readBytes(void* data, size_t length);
-
-    void startTiming();
-    void stopTiming();
-    unsigned int kbitsPerSecond();
-    unsigned int timeWaited() { return timeWaitedIn100us; }
-
-  protected:
-    size_t overrun(size_t itemSize, size_t nItems, bool wait);
 
   private:
+    virtual bool fillBuffer(size_t maxSize, bool wait);
+
     size_t readWithTimeoutOrCallback(void* buf, size_t len, bool wait=true);
 
     int fd;
@@ -65,11 +55,6 @@ namespace rdr {
     int timeoutms;
     FdInStreamBlockCallback* blockCallback;
 
-    bool timing;
-    unsigned int timeWaitedIn100us;
-    unsigned int timedKbits;
-
-    size_t bufSize;
     size_t offset;
     U8* start;
   };

common/rdr/FdOutStream.cxx

@@ -35,6 +35,8 @@
 #include <unistd.h>
 #include <sys/time.h>
 #include <sys/socket.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
 #endif
 
 /* Old systems have select() in sys/time.h */
@@ -49,26 +51,19 @@
 
 using namespace rdr;
 
-enum { DEFAULT_BUF_SIZE = 16384 };
+FdOutStream::FdOutStream(int fd_, bool blocking_, int timeoutms_)
-
+  : fd(fd_), blocking(blocking_), timeoutms(timeoutms_)
-FdOutStream::FdOutStream(int fd_, bool blocking_, int timeoutms_, size_t bufSize_)
-  : fd(fd_), blocking(blocking_), timeoutms(timeoutms_),
-    bufSize(bufSize_ ? bufSize_ : DEFAULT_BUF_SIZE), offset(0)
 {
-  ptr = start = sentUpTo = new U8[bufSize];
-  end = start + bufSize;
-
   gettimeofday(&lastWrite, NULL);
 }
 
 FdOutStream::~FdOutStream()
 {
   try {
-    blocking = true;
+    while (sentUpTo != ptr)
-    flush();
+      flushBuffer(true);
   } catch (Exception&) {
   }
-  delete [] start;
 }
 
 void FdOutStream::setTimeout(int timeoutms_) {
@@ -79,82 +74,29 @@ void FdOutStream::setBlocking(bool blocking_) {
   blocking = blocking_;
 }
 
-size_t FdOutStream::length()
-{
-  return offset + ptr - sentUpTo;
-}
-
-int FdOutStream::bufferUsage()
-{
-  return ptr - sentUpTo;
-}
-
 unsigned FdOutStream::getIdleTime()
 {
   return rfb::msSince(&lastWrite);
 }
 
-void FdOutStream::flush()
+bool FdOutStream::flushBuffer(bool wait)
 {
-  while (sentUpTo < ptr) {
+  size_t n = writeWithTimeout((const void*) sentUpTo,
-    size_t n = writeWithTimeout((const void*) sentUpTo,
+                              ptr - sentUpTo,
-                                ptr - sentUpTo,
+                              (blocking || wait)? timeoutms : 0);
-                                blocking? timeoutms : 0);
-
-    // Timeout?
-    if (n == 0) {
-      // If non-blocking then we're done here
-      if (!blocking)
-        break;
-
-      throw TimedOut();
-    }
-
-    sentUpTo += n;
-    offset += n;
-  }
-
-   // Managed to flush everything?
-  if (sentUpTo == ptr)
-    ptr = sentUpTo = start;
-}
 
+  // Timeout?
+  if (n == 0) {
+    // If non-blocking then we're done here
+    if (!blocking && !wait)
+      return false;
 
-size_t FdOutStream::overrun(size_t itemSize, size_t nItems)
+    throw TimedOut();
-{
-  if (itemSize > bufSize)
-    throw Exception("FdOutStream overrun: max itemSize exceeded");
-
-  // First try to get rid of the data we have
-  flush();
-
-  // Still not enough space?
-  if (itemSize > (size_t)(end - ptr)) {
-    // Can we shuffle things around?
-    // (don't do this if it gains us less than 25%)
-    if (((size_t)(sentUpTo - start) > bufSize / 4) &&
-        (itemSize < bufSize - (ptr - sentUpTo))) {
-      memmove(start, sentUpTo, ptr - sentUpTo);
-      ptr = start + (ptr - sentUpTo);
-      sentUpTo = start;
-    } else {
-      // Have to get rid of more data, so turn off non-blocking
-      // for a bit...
-      bool realBlocking;
-
-      realBlocking = blocking;
-      blocking = true;
-      flush();
-      blocking = realBlocking;
-    }
   }
 
-  size_t nAvail;
+  sentUpTo += n;
-  nAvail = (end - ptr) / itemSize;
-  if (nAvail < nItems)
-    return nAvail;
 
-  return nItems;
+  return true;
 }
 
 //

common/rdr/FdOutStream.h

@@ -26,38 +26,29 @@
 
 #include <sys/time.h>
 
-#include <rdr/OutStream.h>
+#include <rdr/BufferedOutStream.h>
 
 namespace rdr {
 
-  class FdOutStream : public OutStream {
+  class FdOutStream : public BufferedOutStream {
 
   public:
 
-    FdOutStream(int fd, bool blocking=true, int timeoutms=-1, size_t bufSize=0);
+    FdOutStream(int fd, bool blocking=true, int timeoutms=-1);
     virtual ~FdOutStream();
 
     void setTimeout(int timeoutms);
     void setBlocking(bool blocking);
     int getFd() { return fd; }
 
-    void flush();
-    size_t length();
-
-    int bufferUsage();
-
     unsigned getIdleTime();
 
   private:
-    size_t overrun(size_t itemSize, size_t nItems);
+    virtual bool flushBuffer(bool wait);
     size_t writeWithTimeout(const void* data, size_t length, int timeoutms);
     int fd;
     bool blocking;
     int timeoutms;
-    size_t bufSize;
-    size_t offset;
-    U8* start;
-    U8* sentUpTo;
     struct timeval lastWrite;
   };
 

common/rdr/FileInStream.cxx

@@ -30,7 +30,6 @@ FileInStream::FileInStream(const char *fileName)
   file = fopen(fileName, "rb");
   if (!file)
     throw SystemException("fopen", errno);
-  ptr = end = b;
 }
 
 FileInStream::~FileInStream(void) {
@@ -40,50 +39,17 @@ FileInStream::~FileInStream(void) {
   }
 }
 
-void FileInStream::reset(void) {
+bool FileInStream::fillBuffer(size_t maxSize, bool wait)
-  if (!file)
-    throw Exception("File is not open");
-  if (fseek(file, 0, SEEK_SET) != 0)
-    throw SystemException("fseek", errno);
-  ptr = end = b;
-}
-
-size_t FileInStream::pos()
 {
-  if (!file)
+  size_t n = fread((U8 *)end, 1, maxSize, file);
-    throw Exception("File is not open");
+  if (n == 0) {
-
+    if (ferror(file))
-  return ftell(file) + ptr - b;
+      throw SystemException("fread", errno);
-}
+    if (feof(file))
-
+      throw EndOfStream();
-size_t FileInStream::overrun(size_t itemSize, size_t nItems, bool wait)
+    return false;
-{
-  if (itemSize > sizeof(b))
-    throw Exception("FileInStream overrun: max itemSize exceeded");
-
-  if (end - ptr != 0)
-    memmove(b, ptr, end - ptr);
-
-  end -= ptr - b;
-  ptr = b;
-
-
-  while ((size_t)(end - b) < itemSize) {
-    size_t n = fread((U8 *)end, b + sizeof(b) - end, 1, file);
-    if (n == 0) {
-      if (ferror(file))
-        throw SystemException("fread", errno);
-      if (feof(file))
-        throw EndOfStream();
-      return 0;
-    }
-    end += b + sizeof(b) - end;
   }
+  end += n;
 
-  size_t nAvail;
+  return true;
-  nAvail = (end - ptr) / itemSize;
-  if (nAvail < nItems)
-    return nAvail;
-
-  return nItems;
 }

common/rdr/FileInStream.h

@@ -22,26 +22,21 @@
 
 #include <stdio.h>
 
-#include <rdr/InStream.h>
+#include <rdr/BufferedInStream.h>
 
 namespace rdr {
 
-  class FileInStream : public InStream {
+  class FileInStream : public BufferedInStream {
 
   public:
 
     FileInStream(const char *fileName);
     ~FileInStream(void);
 
-    void reset(void);
+  private:
-
+    virtual bool fillBuffer(size_t maxSize, bool wait);
-    size_t pos();
-
-  protected:
-    size_t overrun(size_t itemSize, size_t nItems, bool wait = true);
 
   private:
-    U8 b[131072];
     FILE *file;
   };
 

common/rdr/HexInStream.cxx

@@ -24,18 +24,14 @@
 
 using namespace rdr;
 
-const int DEFAULT_BUF_LEN = 16384;
-
 static inline int min(int a, int b) {return a<b ? a : b;}
 
-HexInStream::HexInStream(InStream& is, size_t bufSize_)
+HexInStream::HexInStream(InStream& is)
-: bufSize(bufSize_ ? bufSize_ : DEFAULT_BUF_LEN), offset(0), in_stream(is)
+: in_stream(is)
 {
-  ptr = end = start = new U8[bufSize];
 }
 
 HexInStream::~HexInStream() {
-  delete [] start;
 }
 
 
@@ -76,44 +72,24 @@ decodeError:
 }
 
 
-size_t HexInStream::pos() {
+bool HexInStream::fillBuffer(size_t maxSize, bool wait) {
-  return offset + ptr - start;
+  if (!in_stream.check(2, wait))
-}
+    return false;
-
-size_t HexInStream::overrun(size_t itemSize, size_t nItems, bool wait) {
-  if (itemSize > bufSize)
-    throw Exception("HexInStream overrun: max itemSize exceeded");
-
-  if (end - ptr != 0)
-    memmove(start, ptr, end - ptr);
-
-  end -= ptr - start;
-  offset += ptr - start;
-  ptr = start;
-
-  while ((size_t)(end - ptr) < itemSize) {
-    size_t n = in_stream.check(2, 1, wait);
-    if (n == 0) return 0;
-    const U8* iptr = in_stream.getptr();
-    const U8* eptr = in_stream.getend();
-    size_t length = min((eptr - iptr)/2, start + bufSize - end);
 
-    U8* optr = (U8*) end;
+  const U8* iptr = in_stream.getptr();
-    for (size_t i=0; i<length; i++) {
+  const U8* eptr = in_stream.getend();
-      int v = 0;
+  size_t length = min((eptr - iptr)/2, maxSize);
-      readHexAndShift(iptr[i*2], &v);
-      readHexAndShift(iptr[i*2+1], &v);
-      optr[i] = v;
-    }
 
-    in_stream.setptr(iptr + length*2);
+  U8* optr = (U8*) end;
-    end += length;
+  for (size_t i=0; i<length; i++) {
+    int v = 0;
+    readHexAndShift(iptr[i*2], &v);
+    readHexAndShift(iptr[i*2+1], &v);
+    optr[i] = v;
   }
 
-  size_t nAvail;
+  in_stream.setptr(iptr + length*2);
-  nAvail = (end - ptr) / itemSize;
+  end += length;
-  if (nAvail < nItems)
-    return nAvail;
 
-  return nItems;
+  return true;
 }

common/rdr/HexInStream.h

@@ -19,29 +19,23 @@
 #ifndef __RDR_HEX_INSTREAM_H__
 #define __RDR_HEX_INSTREAM_H__
 
-#include <rdr/InStream.h>
+#include <rdr/BufferedInStream.h>
 
 namespace rdr {
 
-  class HexInStream : public InStream {
+  class HexInStream : public BufferedInStream {
   public:
 
-    HexInStream(InStream& is, size_t bufSize=0);
+    HexInStream(InStream& is);
     virtual ~HexInStream();
 
-    size_t pos();
-
     static bool readHexAndShift(char c, int* v);
     static bool hexStrToBin(const char* s, char** data, size_t* length);
 
-  protected:
-    size_t overrun(size_t itemSize, size_t nItems, bool wait);
-
   private:
-    size_t bufSize;
+    virtual bool fillBuffer(size_t maxSize, bool wait);
-    U8* start;
-    size_t offset;
 
+  private:
     InStream& in_stream;
   };
 

common/rdr/HexOutStream.cxx

@@ -25,8 +25,8 @@ const int DEFAULT_BUF_LEN = 16384;
 
 static inline size_t min(size_t a, size_t b) {return a<b ? a : b;}
 
-HexOutStream::HexOutStream(OutStream& os, size_t buflen)
+HexOutStream::HexOutStream(OutStream& os)
-: out_stream(os), offset(0), bufSize(buflen ? buflen : DEFAULT_BUF_LEN)
+  : out_stream(os), offset(0), bufSize(DEFAULT_BUF_LEN)
 {
   if (bufSize % 2)
     bufSize--;
@@ -95,18 +95,10 @@ HexOutStream::flush() {
   out_stream.flush();
 }
 
-size_t
+void HexOutStream::overrun(size_t needed) {
-HexOutStream::overrun(size_t itemSize, size_t nItems) {
+  if (needed > bufSize)
-  if (itemSize > bufSize)
+    throw Exception("HexOutStream overrun: buffer size exceeded");
-    throw Exception("HexOutStream overrun: max itemSize exceeded");
 
   writeBuffer();
-
-  size_t nAvail;
-  nAvail = (end - ptr) / itemSize;
-  if (nAvail < nItems)
-    return nAvail;
-
-  return nItems;
 }
 

common/rdr/HexOutStream.h

@@ -26,7 +26,7 @@ namespace rdr {
   class HexOutStream : public OutStream {
   public:
 
-    HexOutStream(OutStream& os, size_t buflen=0);
+    HexOutStream(OutStream& os);
     virtual ~HexOutStream();
 
     void flush();
@@ -37,7 +37,7 @@ namespace rdr {
 
   private:
     void writeBuffer();
-    size_t overrun(size_t itemSize, size_t nItems);
+    virtual void overrun(size_t needed);
 
     OutStream& out_stream;
 

common/rdr/InStream.h

@@ -35,28 +35,25 @@ namespace rdr {
 
     virtual ~InStream() {}
 
-    // check() ensures there is buffer data for at least one item of size
+    // avail() returns the number of bytes that are currenctly directly
-    // itemSize bytes.  Returns the number of items in the buffer (up to a
+    // available from the stream.
-    // maximum of nItems).  If wait is false, then instead of blocking to wait
-    // for the bytes, zero is returned if the bytes are not immediately
-    // available. If itemSize or nItems is zero, check() will return zero.
 
-    inline size_t check(size_t itemSize, size_t nItems=1, bool wait=true)
+    inline size_t avail()
     {
-      size_t nAvail;
+      return end - ptr;
-
+    }
-      if (itemSize == 0 || nItems == 0)
-        return 0;
 
-      if (itemSize > (size_t)(end - ptr))
+    // check() ensures there is buffer data for at least needed bytes. Returns
-        return overrun(itemSize, nItems, wait);
+    // true once the data is available. If wait is false, then instead of
+    // blocking to wait for the bytes, false is returned if the bytes are not
+    // immediately available.
 
-      // itemSize cannot be zero at this point
+    inline size_t check(size_t needed, bool wait=true)
-      nAvail = (end - ptr) / itemSize;
+    {
-      if (nAvail < nItems)
+      if (needed > avail())
-        return nAvail;
+        return overrun(needed, wait);
 
-      return nItems;
+      return true;
     }
 
     // checkNoWait() tries to make sure that the given number of bytes can
@@ -64,10 +61,7 @@ namespace rdr {
     // otherwise.  The length must be "small" (less than the buffer size).
     // If length is zero, checkNoWait() will return true.
 
-    inline bool checkNoWait(size_t length)
+    inline bool checkNoWait(size_t length) { return check(length, false); }
-    {
-      return length == 0 || check(length, 1, false) > 0;
-    }
 
     // readU/SN() methods read unsigned and signed N-bit integers.
 
@@ -138,13 +132,12 @@ namespace rdr {
   private:
 
     // overrun() is implemented by a derived class to cope with buffer overrun.
-    // It ensures there are at least itemSize bytes of buffer data.  Returns
+    // It ensures there are at least needed bytes of buffer data. Returns true
-    // the number of items in the buffer (up to a maximum of nItems).  itemSize
+    // once the data is available. If wait is false, then instead of blocking
-    // is supposed to be "small" (a few bytes).  If wait is false, then
+    // to wait for the bytes, false is returned if the bytes are not
-    // instead of blocking to wait for the bytes, zero is returned if the bytes
+    // immediately available.
-    // are not immediately available.
 
-    virtual size_t overrun(size_t itemSize, size_t nItems, bool wait=true) = 0;
+    virtual bool overrun(size_t needed, bool wait=true) = 0;
 
   protected:
 

common/rdr/MemInStream.h

@@ -53,7 +53,7 @@ namespace rdr {
 
   private:
 
-    size_t overrun(size_t itemSize, size_t nItems, bool wait) { throw EndOfStream(); }
+    bool overrun(size_t needed, bool wait) { throw EndOfStream(); }
     const U8* start;
     bool deleteWhenDone;
   };

common/rdr/MemOutStream.h

@@ -41,12 +41,6 @@ namespace rdr {
       delete [] start;
     }
 
-    void writeBytes(const void* data, size_t length) {
-      check(length);
-      memcpy(ptr, data, length);
-      ptr += length;
-    }
-
     size_t length() { return ptr - start; }
     void clear() { ptr = start; };
     void clearAndZero() { memset(start, 0, ptr-start); clear(); }
@@ -58,11 +52,11 @@ namespace rdr {
 
   protected:
 
-    // overrun() either doubles the buffer or adds enough space for nItems of
+    // overrun() either doubles the buffer or adds enough space for
-    // size itemSize bytes.
+    // needed bytes.
 
-    size_t overrun(size_t itemSize, size_t nItems) {
+    virtual void overrun(size_t needed) {
-      size_t len = ptr - start + itemSize * nItems;
+      size_t len = ptr - start + needed;
       if (len < (size_t)(end - start) * 2)
         len = (end - start) * 2;
 
@@ -75,8 +69,6 @@ namespace rdr {
       delete [] start;
       start = newStart;
       end = newStart + len;
-
-      return nItems;
     }
 
     U8* start;

common/rdr/OutStream.h

@@ -40,22 +40,20 @@ namespace rdr {
 
     virtual ~OutStream() {}
 
-    // check() ensures there is buffer space for at least one item of size
+    // avail() returns the number of bytes that currently be written to the
-    // itemSize bytes.  Returns the number of items which fit (up to a maximum
+    // stream without any risk of blocking.
-    // of nItems).
 
-    inline size_t check(size_t itemSize, size_t nItems=1)
+    inline size_t avail()
     {
-      size_t nAvail;
+      return end - ptr;
-
+    }
-      if (itemSize > (size_t)(end - ptr))
-        return overrun(itemSize, nItems);
 
-      nAvail = (end - ptr) / itemSize;
+    // check() ensures there is buffer space for at least needed bytes.
-      if (nAvail < nItems)
-        return nAvail;
 
-      return nItems;
+    inline void check(size_t needed)
+    {
+      if (needed > avail())
+        overrun(needed);
     }
 
     // writeU/SN() methods write unsigned and signed N-bit integers.
@@ -83,19 +81,14 @@ namespace rdr {
       while (bytes-- > 0) writeU8(0);
     }
 
-    inline void skip(size_t bytes) {
-      while (bytes > 0) {
-        size_t n = check(1, bytes);
-        ptr += n;
-        bytes -= n;
-      }
-    }
-
     // writeBytes() writes an exact number of bytes.
 
     void writeBytes(const void* data, size_t length) {
       while (length > 0) {
-        size_t n = check(1, length);
+        check(1);
+        size_t n = length;
+        if (length > avail())
+          n = avail();
         memcpy(ptr, data, n);
         ptr += n;
         data = (U8*)data + n;
@@ -107,7 +100,10 @@ namespace rdr {
 
     void copyBytes(InStream* is, size_t length) {
       while (length > 0) {
-        size_t n = check(1, length);
+        check(1);
+        size_t n = length;
+        if (length > avail())
+          n = avail();
         is->readBytes(ptr, n);
         ptr += n;
         length -= n;
@@ -143,11 +139,9 @@ namespace rdr {
   private:
 
     // overrun() is implemented by a derived class to cope with buffer overrun.
-    // It ensures there are at least itemSize bytes of buffer space.  Returns
+    // It ensures there are at least needed bytes of buffer space.
-    // the number of items which fit (up to a maximum of nItems).  itemSize is
-    // supposed to be "small" (a few bytes).
 
-    virtual size_t overrun(size_t itemSize, size_t nItems) = 0;
+    virtual void overrun(size_t needed) = 0;
 
   protected:
 

common/rdr/RandomStream.cxx

@@ -32,15 +32,10 @@
 
 using namespace rdr;
 
-const size_t DEFAULT_BUF_LEN = 256;
-
 unsigned int RandomStream::seed;
 
 RandomStream::RandomStream()
-  : offset(0)
 {
-  ptr = end = start = new U8[DEFAULT_BUF_LEN];
-
 #ifdef RFB_HAVE_WINCRYPT
   provider = 0;
   if (!CryptAcquireContext(&provider, 0, 0, PROV_RSA_FULL, 0)) {
@@ -72,8 +67,6 @@ RandomStream::RandomStream()
 }
 
 RandomStream::~RandomStream() {
-  delete [] start;
-
 #ifdef RFB_HAVE_WINCRYPT
   if (provider)
     CryptReleaseContext(provider, 0);
@@ -83,50 +76,29 @@ RandomStream::~RandomStream() {
 #endif
 }
 
-size_t RandomStream::pos() {
+bool RandomStream::fillBuffer(size_t maxSize, bool wait) {
-  return offset + ptr - start;
-}
-
-size_t RandomStream::overrun(size_t itemSize, size_t nItems, bool wait) {
-  if (itemSize > DEFAULT_BUF_LEN)
-    throw Exception("RandomStream overrun: max itemSize exceeded");
-
-  if (end - ptr != 0)
-    memmove(start, ptr, end - ptr);
-
-  end -= ptr - start;
-  offset += ptr - start;
-  ptr = start;
-
-  size_t length = start + DEFAULT_BUF_LEN - end;
-
 #ifdef RFB_HAVE_WINCRYPT
   if (provider) {
-    if (!CryptGenRandom(provider, length, (U8*)end))
+    if (!CryptGenRandom(provider, maxSize, (U8*)end))
       throw rdr::SystemException("unable to CryptGenRandom", GetLastError());
-    end += length;
+    end += maxSize;
   } else {
 #else
 #ifndef WIN32
   if (fp) {
-    size_t n = fread((U8*)end, length, 1, fp);
+    size_t n = fread((U8*)end, 1, maxSize, fp);
-    if (n != 1)
+    if (n <= 0)
       throw rdr::SystemException("reading /dev/urandom or /dev/random failed",
                                  errno);
-    end += length;
+    end += n;
   } else {
 #else
   {
 #endif
 #endif
-    for (size_t i=0; i<length; i++)
+    for (size_t i=0; i<maxSize; i++)
       *(U8*)end++ = (int) (256.0*rand()/(RAND_MAX+1.0));
   }
 
-  size_t nAvail;
+  return true;
-  nAvail = (end - ptr) / itemSize;
-  if (nAvail < nItems)
-    return nAvail;
-
-  return nItems;
 }

common/rdr/RandomStream.h

@@ -20,7 +20,7 @@
 #define __RDR_RANDOMSTREAM_H__
 
 #include <stdio.h>
-#include <rdr/InStream.h>
+#include <rdr/BufferedInStream.h>
 
 #ifdef WIN32
 #include <windows.h>
@@ -32,22 +32,17 @@
 
 namespace rdr {
 
-  class RandomStream : public InStream {
+  class RandomStream : public BufferedInStream {
 
   public:
 
     RandomStream();
     virtual ~RandomStream();
 
-    size_t pos();
-
-  protected:
-    size_t overrun(size_t itemSize, size_t nItems, bool wait);
-
   private:
-    U8* start;
+    virtual bool fillBuffer(size_t maxSize, bool wait);
-    size_t offset;
 
+  private:
     static unsigned int seed;
 #ifdef RFB_HAVE_WINCRYPT
     HCRYPTPROV provider;

common/rdr/TLSInStream.cxx

@@ -30,21 +30,19 @@
 #ifdef HAVE_GNUTLS 
 using namespace rdr;
 
-enum { DEFAULT_BUF_SIZE = 16384 };
-
 ssize_t TLSInStream::pull(gnutls_transport_ptr_t str, void* data, size_t size)
 {
   TLSInStream* self= (TLSInStream*) str;
   InStream *in = self->in;
 
   try {
-    if (!in->check(1, 1, false)) {
+    if (!in->check(1, false)) {
       gnutls_transport_set_errno(self->session, EAGAIN);
       return -1;
     }
 
-    if ((size_t)(in->getend() - in->getptr()) < size)
+    if (in->avail() < size)
-      size = in->getend() - in->getptr();
+      size = in->avail();
   
     in->readBytes(data, size);
 
@@ -57,12 +55,10 @@ ssize_t TLSInStream::pull(gnutls_transport_ptr_t str, void* data, size_t size)
 }
 
 TLSInStream::TLSInStream(InStream* _in, gnutls_session_t _session)
-  : session(_session), in(_in), bufSize(DEFAULT_BUF_SIZE), offset(0)
+  : session(_session), in(_in)
 {
   gnutls_transport_ptr_t recv, send;
 
-  ptr = end = start = new U8[bufSize];
-
   gnutls_transport_set_pull_function(session, pull);
   gnutls_transport_get_ptr2(session, &recv, &send);
   gnutls_transport_set_ptr2(session, this, send);
@@ -71,40 +67,16 @@ TLSInStream::TLSInStream(InStream* _in, gnutls_session_t _session)
 TLSInStream::~TLSInStream()
 {
   gnutls_transport_set_pull_function(session, NULL);
-
-  delete[] start;
-}
-
-size_t TLSInStream::pos()
-{
-  return offset + ptr - start;
 }
 
-size_t TLSInStream::overrun(size_t itemSize, size_t nItems, bool wait)
+bool TLSInStream::fillBuffer(size_t maxSize, bool wait)
 {
-  if (itemSize > bufSize)
+  size_t n = readTLS((U8*) end, maxSize, wait);
-    throw Exception("TLSInStream overrun: max itemSize exceeded");
+  if (!wait && n == 0)
-
+    return false;
-  if (end - ptr != 0)
+  end += n;
-    memmove(start, ptr, end - ptr);
-
-  offset += ptr - start;
-  end -= ptr - start;
-  ptr = start;
-
-  while ((size_t)(end - start) < itemSize) {
-    size_t n = readTLS((U8*) end, start + bufSize - end, wait);
-    if (!wait && n == 0)
-      return 0;
-    end += n;
-  }
-
-  size_t nAvail;
-  nAvail = (end - ptr) / itemSize;
-  if (nAvail < nItems)
-    return nAvail;
 
-  return nItems;
+  return true;
 }
 
 size_t TLSInStream::readTLS(U8* buf, size_t len, bool wait)
@@ -112,7 +84,7 @@ size_t TLSInStream::readTLS(U8* buf, size_t len, bool wait)
   int n;
 
   if (gnutls_record_check_pending(session) == 0) {
-    n = in->check(1, 1, wait);
+    n = in->check(1, wait);
     if (n == 0)
       return 0;
   }

common/rdr/TLSInStream.h

@@ -27,27 +27,22 @@
 #ifdef HAVE_GNUTLS
 
 #include <gnutls/gnutls.h>
-#include <rdr/InStream.h>
+#include <rdr/BufferedInStream.h>
 
 namespace rdr {
 
-  class TLSInStream : public InStream {
+  class TLSInStream : public BufferedInStream {
   public:
     TLSInStream(InStream* in, gnutls_session_t session);
     virtual ~TLSInStream();
 
-    size_t pos();
-
   private:
-    size_t overrun(size_t itemSize, size_t nItems, bool wait);
+    virtual bool fillBuffer(size_t maxSize, bool wait);
     size_t readTLS(U8* buf, size_t len, bool wait);
     static ssize_t pull(gnutls_transport_ptr_t str, void* data, size_t size);
 
     gnutls_session_t session;
     InStream* in;
-    size_t bufSize;
-    size_t offset;
-    U8* start;
   };
 };
 

common/rdr/TLSOutStream.cxx

@@ -93,19 +93,12 @@ void TLSOutStream::flush()
   out->flush();
 }
 
-size_t TLSOutStream::overrun(size_t itemSize, size_t nItems)
+void TLSOutStream::overrun(size_t needed)
 {
-  if (itemSize > bufSize)
+  if (needed > bufSize)
-    throw Exception("TLSOutStream overrun: max itemSize exceeded");
+    throw Exception("TLSOutStream overrun: buffer size exceeded");
 
   flush();
-
-  size_t nAvail;
-  nAvail = (end - ptr) / itemSize;
-  if (nAvail < nItems)
-    return nAvail;
-
-  return nItems;
 }
 
 size_t TLSOutStream::writeTLS(const U8* data, size_t length)

common/rdr/TLSOutStream.h

@@ -39,7 +39,7 @@ namespace rdr {
     size_t length();
 
   protected:
-    size_t overrun(size_t itemSize, size_t nItems);
+    virtual void overrun(size_t needed);
 
   private:
     size_t writeTLS(const U8* data, size_t length);

common/rdr/ZlibInStream.cxx

@@ -24,41 +24,30 @@
 
 using namespace rdr;
 
-enum { DEFAULT_BUF_SIZE = 16384 };
+ZlibInStream::ZlibInStream()
-
+  : underlying(0), zs(NULL), bytesIn(0)
-ZlibInStream::ZlibInStream(size_t bufSize_)
-  : underlying(0), bufSize(bufSize_ ? bufSize_ : DEFAULT_BUF_SIZE), offset(0),
-    zs(NULL), bytesIn(0)
 {
-  ptr = end = start = new U8[bufSize];
   init();
 }
 
 ZlibInStream::~ZlibInStream()
 {
   deinit();
-  delete [] start;
 }
 
 void ZlibInStream::setUnderlying(InStream* is, size_t bytesIn_)
 {
   underlying = is;
   bytesIn = bytesIn_;
-  ptr = end = start;
+  skip(avail());
-}
-
-size_t ZlibInStream::pos()
-{
-  return offset + ptr - start;
 }
 
 void ZlibInStream::flushUnderlying()
 {
-  ptr = end = start;
-
   while (bytesIn > 0) {
-    decompress(true);
+    if (!check(1))
-    end = start; // throw away any data
+      throw Exception("ZlibInStream: failed to flush remaining stream data");
+    skip(avail());
   }
 
   setUnderlying(NULL, 0);
@@ -96,47 +85,18 @@ void ZlibInStream::deinit()
   zs = NULL;
 }
 
-size_t ZlibInStream::overrun(size_t itemSize, size_t nItems, bool wait)
+bool ZlibInStream::fillBuffer(size_t maxSize, bool wait)
-{
-  if (itemSize > bufSize)
-    throw Exception("ZlibInStream overrun: max itemSize exceeded");
-
-  if (end - ptr != 0)
-    memmove(start, ptr, end - ptr);
-
-  offset += ptr - start;
-  end -= ptr - start;
-  ptr = start;
-
-  while ((size_t)(end - ptr) < itemSize) {
-    if (!decompress(wait))
-      return 0;
-  }
-
-  size_t nAvail;
-  nAvail = (end - ptr) / itemSize;
-  if (nAvail < nItems)
-    return nAvail;
-
-  return nItems;
-}
-
-// decompress() calls the decompressor once.  Note that this won't necessarily
-// generate any output data - it may just consume some input data.  Returns
-// false if wait is false and we would block on the underlying stream.
-
-bool ZlibInStream::decompress(bool wait)
 {
   if (!underlying)
     throw Exception("ZlibInStream overrun: no underlying stream");
 
   zs->next_out = (U8*)end;
-  zs->avail_out = start + bufSize - end;
+  zs->avail_out = maxSize;
 
-  size_t n = underlying->check(1, 1, wait);
+  size_t n = underlying->check(1, wait);
   if (n == 0) return false;
   zs->next_in = (U8*)underlying->getptr();
-  zs->avail_in = underlying->getend() - underlying->getptr();
+  zs->avail_in = underlying->avail();
   if (zs->avail_in > bytesIn)
     zs->avail_in = bytesIn;
 

common/rdr/ZlibInStream.h

@@ -24,38 +24,32 @@
 #ifndef __RDR_ZLIBINSTREAM_H__
 #define __RDR_ZLIBINSTREAM_H__
 
-#include <rdr/InStream.h>
+#include <rdr/BufferedInStream.h>
 
 struct z_stream_s;
 
 namespace rdr {
 
-  class ZlibInStream : public InStream {
+  class ZlibInStream : public BufferedInStream {
 
   public:
-
+    ZlibInStream();
-    ZlibInStream(size_t bufSize=0);
     virtual ~ZlibInStream();
 
     void setUnderlying(InStream* is, size_t bytesIn);
     void flushUnderlying();
-    size_t pos();
     void reset();
 
   private:
-
     void init();
     void deinit();
 
-    size_t overrun(size_t itemSize, size_t nItems, bool wait);
+    virtual bool fillBuffer(size_t maxSize, bool wait);
-    bool decompress(bool wait);
 
+  private:
     InStream* underlying;
-    size_t bufSize;
-    size_t offset;
     z_stream_s* zs;
     size_t bytesIn;
-    U8* start;
   };
 
 } // end of namespace rdr

common/rdr/ZlibOutStream.cxx

@@ -30,9 +30,9 @@ using namespace rdr;
 
 enum { DEFAULT_BUF_SIZE = 16384 };
 
-ZlibOutStream::ZlibOutStream(OutStream* os, size_t bufSize_, int compressLevel)
+ZlibOutStream::ZlibOutStream(OutStream* os, int compressLevel)
   : underlying(os), compressionLevel(compressLevel), newLevel(compressLevel),
-    bufSize(bufSize_ ? bufSize_ : DEFAULT_BUF_SIZE), offset(0)
+    bufSize(DEFAULT_BUF_SIZE), offset(0)
 {
   zs = new z_stream;
   zs->zalloc    = Z_NULL;
@@ -95,18 +95,18 @@ void ZlibOutStream::flush()
   ptr = start;
 }
 
-size_t ZlibOutStream::overrun(size_t itemSize, size_t nItems)
+void ZlibOutStream::overrun(size_t needed)
 {
 #ifdef ZLIBOUT_DEBUG
   fprintf(stderr,"zos overrun\n");
 #endif
 
-  if (itemSize > bufSize)
+  if (needed > bufSize)
-    throw Exception("ZlibOutStream overrun: max itemSize exceeded");
+    throw Exception("ZlibOutStream overrun: buffer size exceeded");
 
   checkCompressionLevel();
 
-  while ((size_t)(end - ptr) < itemSize) {
+  while (avail() < needed) {
     zs->next_in = start;
     zs->avail_in = ptr - start;
 
@@ -126,13 +126,6 @@ size_t ZlibOutStream::overrun(size_t itemSize, size_t nItems)
       ptr -= zs->next_in - start;
     }
   }
-
-  size_t nAvail;
-  nAvail = (end - ptr) / itemSize;
-  if (nAvail < nItems)
-    return nAvail;
-
-  return nItems;
 }
 
 void ZlibOutStream::deflate(int flush)
@@ -148,7 +141,7 @@ void ZlibOutStream::deflate(int flush)
   do {
     underlying->check(1);
     zs->next_out = underlying->getptr();
-    zs->avail_out = underlying->getend() - underlying->getptr();
+    zs->avail_out = underlying->avail();
 
 #ifdef ZLIBOUT_DEBUG
     fprintf(stderr,"zos: calling deflate, avail_in %d, avail_out %d\n",

common/rdr/ZlibOutStream.h

@@ -35,7 +35,7 @@ namespace rdr {
 
   public:
 
-    ZlibOutStream(OutStream* os=0, size_t bufSize=0, int compressionLevel=-1);
+    ZlibOutStream(OutStream* os=0, int compressionLevel=-1);
     virtual ~ZlibOutStream();
 
     void setUnderlying(OutStream* os);
@@ -45,7 +45,7 @@ namespace rdr {
 
   private:
 
-    size_t overrun(size_t itemSize, size_t nItems);
+    virtual void overrun(size_t needed);
     void deflate(int flush);
     void checkCompressionLevel();
 

common/rfb/CConnection.cxx

@@ -20,6 +20,7 @@
 #include <string.h>
 
 #include <rfb/Exception.h>
+#include <rfb/clipboardTypes.h>
 #include <rfb/fenceTypes.h>
 #include <rfb/CMsgReader.h>
 #include <rfb/CMsgWriter.h>
@@ -42,7 +43,8 @@ CConnection::CConnection()
   : csecurity(0), is(0), os(0), reader_(0), writer_(0),
     shared(false),
     state_(RFBSTATE_UNINITIALISED), useProtocol3_3(false),
-    framebuffer(NULL), decoder(this)
+    framebuffer(NULL), decoder(this),
+    serverClipboard(NULL), hasLocalClipboard(false)
 {
 }
 
@@ -54,6 +56,7 @@ CConnection::~CConnection()
   reader_ = 0;
   delete writer_;
   writer_ = 0;
+  strFree(serverClipboard);
 }
 
 void CConnection::setStreams(rdr::InStream* is_, rdr::OutStream* os_)
@@ -342,6 +345,79 @@ void CConnection::dataRect(const Rect& r, int encoding)
   decoder.decodeRect(r, encoding, framebuffer);
 }
 
+void CConnection::serverCutText(const char* str)
+{
+  hasLocalClipboard = false;
+
+  strFree(serverClipboard);
+  serverClipboard = NULL;
+
+  serverClipboard = latin1ToUTF8(str);
+
+  handleClipboardAnnounce(true);
+}
+
+void CConnection::handleClipboardCaps(rdr::U32 flags,
+                                      const rdr::U32* lengths)
+{
+  rdr::U32 sizes[] = { 0 };
+
+  CMsgHandler::handleClipboardCaps(flags, lengths);
+
+  writer()->writeClipboardCaps(rfb::clipboardUTF8 |
+                               rfb::clipboardRequest |
+                               rfb::clipboardPeek |
+                               rfb::clipboardNotify |
+                               rfb::clipboardProvide,
+                               sizes);
+}
+
+void CConnection::handleClipboardRequest(rdr::U32 flags)
+{
+  if (!(flags & rfb::clipboardUTF8))
+    return;
+  if (!hasLocalClipboard)
+    return;
+  handleClipboardRequest();
+}
+
+void CConnection::handleClipboardPeek(rdr::U32 flags)
+{
+  if (!hasLocalClipboard)
+    return;
+  if (cp.clipboardFlags() & rfb::clipboardNotify)
+    writer()->writeClipboardNotify(rfb::clipboardUTF8);
+}
+
+void CConnection::handleClipboardNotify(rdr::U32 flags)
+{
+  strFree(serverClipboard);
+  serverClipboard = NULL;
+
+  if (flags & rfb::clipboardUTF8) {
+    hasLocalClipboard = false;
+    handleClipboardAnnounce(true);
+  } else {
+    handleClipboardAnnounce(false);
+  }
+}
+
+void CConnection::handleClipboardProvide(rdr::U32 flags,
+                                         const size_t* lengths,
+                                         const rdr::U8* const* data)
+{
+  if (!(flags & rfb::clipboardUTF8))
+    return;
+
+  strFree(serverClipboard);
+  serverClipboard = NULL;
+
+  serverClipboard = convertLF((const char*)data[0], lengths[0]);
+
+  // FIXME: Should probably verify that this data was actually requested
+  handleClipboardData(serverClipboard);
+}
+
 void CConnection::authSuccess()
 {
 }
@@ -364,3 +440,53 @@ void CConnection::fence(rdr::U32 flags, unsigned len, const char data[])
 
   writer()->writeFence(flags, len, data);
 }
+
+void CConnection::handleClipboardRequest()
+{
+}
+
+void CConnection::handleClipboardAnnounce(bool available)
+{
+}
+
+void CConnection::handleClipboardData(const char* data)
+{
+}
+
+void CConnection::requestClipboard()
+{
+  if (serverClipboard != NULL) {
+    handleClipboardData(serverClipboard);
+    return;
+  }
+
+  if (cp.clipboardFlags() & rfb::clipboardRequest)
+    writer()->writeClipboardRequest(rfb::clipboardUTF8);
+}
+
+void CConnection::announceClipboard(bool available)
+{
+  hasLocalClipboard = available;
+
+  if (cp.clipboardFlags() & rfb::clipboardNotify)
+    writer()->writeClipboardNotify(available ? rfb::clipboardUTF8 : 0);
+  else {
+    if (available)
+      handleClipboardRequest();
+  }
+}
+
+void CConnection::sendClipboardData(const char* data)
+{
+  if (cp.clipboardFlags() & rfb::clipboardProvide) {
+    CharArray filtered(convertCRLF(data));
+    size_t sizes[1] = { strlen(filtered.buf) + 1 };
+    const rdr::U8* data[1] = { (const rdr::U8*)filtered.buf };
+    writer()->writeClipboardProvide(rfb::clipboardUTF8, sizes, data);
+  } else {
+    CharArray latin1(utf8ToLatin1(data));
+
+    writer()->writeClientCutText(latin1.buf, strlen(latin1.buf));
+  }
+}
+

common/rfb/CConnection.h

@@ -107,6 +107,17 @@ namespace rfb {
     virtual void framebufferUpdateEnd();
     virtual void dataRect(const Rect& r, int encoding);
 
+    virtual void serverCutText(const char* str);
+
+    virtual void handleClipboardCaps(rdr::U32 flags,
+                                     const rdr::U32* lengths);
+    virtual void handleClipboardRequest(rdr::U32 flags);
+    virtual void handleClipboardPeek(rdr::U32 flags);
+    virtual void handleClipboardNotify(rdr::U32 flags);
+    virtual void handleClipboardProvide(rdr::U32 flags,
+                                        const size_t* lengths,
+                                        const rdr::U8* const* data);
+
 
     // Methods to be overridden in a derived class
 
@@ -121,9 +132,43 @@ namespace rfb {
     // derived class must call on to CConnection::serverInit().
     virtual void serverInit();
 
+    // handleClipboardRequest() is called whenever the server requests
+    // the client to send over its clipboard data. It will only be
+    // called after the client has first announced a clipboard change
+    // via announceClipboard().
+    virtual void handleClipboardRequest();
+
+    // handleClipboardAnnounce() is called to indicate a change in the
+    // clipboard on the server. Call requestClipboard() to access the
+    // actual data.
+    virtual void handleClipboardAnnounce(bool available);
+
+    // handleClipboardData() is called when the server has sent over
+    // the clipboard data as a result of a previous call to
+    // requestClipboard(). Note that this function might never be
+    // called if the clipboard data was no longer available when the
+    // server received the request.
+    virtual void handleClipboardData(const char* data);
+
 
     // Other methods
 
+    // requestClipboard() will result in a request to the server to
+    // transfer its clipboard data. A call to handleClipboardData()
+    // will be made once the data is available.
+    virtual void requestClipboard();
+
+    // announceClipboard() informs the server of changes to the
+    // clipboard on the client. The server may later request the
+    // clipboard data via handleClipboardRequest().
+    virtual void announceClipboard(bool available);
+
+    // sendClipboardData() transfers the clipboard data to the server
+    // and should be called whenever the server has requested the
+    // clipboard via handleClipboardRequest().
+    virtual void sendClipboardData(const char* data);
+
+
     CMsgReader* reader() { return reader_; }
     CMsgWriter* writer() { return writer_; }
 
@@ -190,6 +235,9 @@ namespace rfb {
 
     ModifiablePixelBuffer* framebuffer;
     DecodeManager decoder;
+
+    char* serverClipboard;
+    bool hasLocalClipboard;
   };
 }
 #endif

common/rfb/CMsgHandler.cxx

@@ -92,3 +92,26 @@ void CMsgHandler::setLEDState(unsigned int state)
 {
   cp.setLEDState(state);
 }
+
+void CMsgHandler::handleClipboardCaps(rdr::U32 flags, const rdr::U32* lengths)
+{
+  cp.setClipboardCaps(flags, lengths);
+}
+
+void CMsgHandler::handleClipboardRequest(rdr::U32 flags)
+{
+}
+
+void CMsgHandler::handleClipboardPeek(rdr::U32 flags)
+{
+}
+
+void CMsgHandler::handleClipboardNotify(rdr::U32 flags)
+{
+}
+
+void CMsgHandler::handleClipboardProvide(rdr::U32 flags,
+                                         const size_t* lengths,
+                                         const rdr::U8* const* data)
+{
+}

common/rfb/CMsgHandler.h

@@ -72,6 +72,15 @@ namespace rfb {
 
     virtual void setLEDState(unsigned int state);
 
+    virtual void handleClipboardCaps(rdr::U32 flags,
+                                     const rdr::U32* lengths);
+    virtual void handleClipboardRequest(rdr::U32 flags);
+    virtual void handleClipboardPeek(rdr::U32 flags);
+    virtual void handleClipboardNotify(rdr::U32 flags);
+    virtual void handleClipboardProvide(rdr::U32 flags,
+                                        const size_t* lengths,
+                                        const rdr::U8* const* data);
+
     ConnParams cp;
   };
 }

common/rfb/CMsgWriter.cxx

@@ -18,10 +18,14 @@
  */
 #include <stdio.h>
 #include <rdr/OutStream.h>
+#include <rdr/MemOutStream.h>
+#include <rdr/ZlibOutStream.h>
+
 #include <rfb/msgTypes.h>
 #include <rfb/fenceTypes.h>
 #include <rfb/encodings.h>
 #include <rfb/qemuTypes.h>
+#include <rfb/clipboardTypes.h>
 #include <rfb/Exception.h>
 #include <rfb/PixelFormat.h>
 #include <rfb/Rect.h>
@@ -57,7 +61,7 @@ void CMsgWriter::writeSetPixelFormat(const PixelFormat& pf)
 void CMsgWriter::writeSetEncodings(int nEncodings, rdr::U32* encodings)
 {
   startMsg(msgTypeSetEncodings);
-  os->skip(1);
+  os->pad(1);
   os->writeU16(nEncodings);
   for (int i = 0; i < nEncodings; i++)
     os->writeU32(encodings[i]);
@@ -265,6 +269,104 @@ void CMsgWriter::writeClientCutText(const char* str, rdr::U32 len)
   endMsg();
 }
 
+void CMsgWriter::writeClipboardCaps(rdr::U32 caps,
+                                    const rdr::U32* lengths)
+{
+  size_t i, count;
+
+  if (!(cp->clipboardFlags() & clipboardCaps))
+    throw Exception("Server does not support clipboard \"caps\" action");
+
+  count = 0;
+  for (i = 0;i < 16;i++) {
+    if (caps & (1 << i))
+      count++;
+  }
+
+  startMsg(msgTypeClientCutText);
+  os->pad(3);
+  os->writeS32(-(4 + 4 * count));
+
+  os->writeU32(caps | clipboardCaps);
+
+  count = 0;
+  for (i = 0;i < 16;i++) {
+    if (caps & (1 << i))
+      os->writeU32(lengths[count++]);
+  }
+
+  endMsg();
+}
+
+void CMsgWriter::writeClipboardRequest(rdr::U32 flags)
+{
+  if (!(cp->clipboardFlags() & clipboardRequest))
+    throw Exception("Server does not support clipboard \"request\" action");
+
+  startMsg(msgTypeClientCutText);
+  os->pad(3);
+  os->writeS32(-4);
+  os->writeU32(flags | clipboardRequest);
+  endMsg();
+}
+
+void CMsgWriter::writeClipboardPeek(rdr::U32 flags)
+{
+  if (!(cp->clipboardFlags() & clipboardPeek))
+    throw Exception("Server does not support clipboard \"peek\" action");
+
+  startMsg(msgTypeClientCutText);
+  os->pad(3);
+  os->writeS32(-4);
+  os->writeU32(flags | clipboardPeek);
+  endMsg();
+}
+
+void CMsgWriter::writeClipboardNotify(rdr::U32 flags)
+{
+  if (!(cp->clipboardFlags() & clipboardNotify))
+    throw Exception("Server does not support clipboard \"notify\" action");
+
+  startMsg(msgTypeClientCutText);
+  os->pad(3);
+  os->writeS32(-4);
+  os->writeU32(flags | clipboardNotify);
+  endMsg();
+}
+
+void CMsgWriter::writeClipboardProvide(rdr::U32 flags,
+                                      const size_t* lengths,
+                                      const rdr::U8* const* data)
+{
+  rdr::MemOutStream mos;
+  rdr::ZlibOutStream zos;
+
+  int i, count;
+
+  if (!(cp->clipboardFlags() & clipboardProvide))
+    throw Exception("Server does not support clipboard \"provide\" action");
+
+  zos.setUnderlying(&mos);
+
+  count = 0;
+  for (i = 0;i < 16;i++) {
+    if (!(flags & (1 << i)))
+      continue;
+    zos.writeU32(lengths[count]);
+    zos.writeBytes(data[count], lengths[count]);
+    count++;
+  }
+
+  zos.flush();
+
+  startMsg(msgTypeClientCutText);
+  os->pad(3);
+  os->writeS32(-(4 + mos.length()));
+  os->writeU32(flags | clipboardProvide);
+  os->writeBytes(mos.data(), mos.length());
+  endMsg();
+}
+
 void CMsgWriter::startMsg(int type)
 {
   os->writeU8(type);

common/rfb/CMsgWriter.h

@@ -56,6 +56,13 @@ namespace rfb {
     void writePointerEvent(const Point& pos, int buttonMask);
     void writeClientCutText(const char* str, rdr::U32 len);
 
+    void writeClipboardCaps(rdr::U32 caps, const rdr::U32* lengths);
+    void writeClipboardRequest(rdr::U32 flags);
+    void writeClipboardPeek(rdr::U32 flags);
+    void writeClipboardNotify(rdr::U32 flags);
+    void writeClipboardProvide(rdr::U32 flags, const size_t* lengths,
+                               const rdr::U8* const* data);
+
   protected:
     void startMsg(int type);
     void endMsg();

common/rfb/ConnParams.cxx

@@ -24,6 +24,7 @@
 #include <rfb/Exception.h>
 #include <rfb/encodings.h>
 #include <rfb/ledStates.h>
+#include <rfb/clipboardTypes.h>
 #include <rfb/ConnParams.h>
 #include <rfb/ServerCore.h>
 #include <rfb/SMsgHandler.h>
@@ -36,19 +37,25 @@ ConnParams::ConnParams()
     width(0), height(0), useCopyRect(false),
     supportsLocalCursor(false), supportsLocalXCursor(false),
     supportsLocalCursorWithAlpha(false),
+    supportsCursorPosition(false),
     supportsDesktopResize(false), supportsExtendedDesktopSize(false),
     supportsDesktopRename(false), supportsLastRect(false),
     supportsLEDState(false), supportsQEMUKeyEvent(false),
     supportsWEBP(false),
     supportsSetDesktopSize(false), supportsFence(false),
-    supportsContinuousUpdates(false),
+    supportsContinuousUpdates(false), supportsExtendedClipboard(false),
     compressLevel(2), qualityLevel(-1), fineQualityLevel(-1),
-    subsampling(subsampleUndefined), name_(0), verStrPos(0),
+    subsampling(subsampleUndefined), name_(0), cursorPos_(0, 0), verStrPos(0),
     ledState_(ledUnknown), shandler(NULL)
 {
   memset(kasmPassed, 0, KASM_NUM_SETTINGS);
   setName("");
   cursor_ = new Cursor(0, 0, Point(), NULL);
+
+  clipFlags = clipboardUTF8 | clipboardRTF | clipboardHTML |
+              clipboardRequest | clipboardNotify | clipboardProvide;
+  memset(clipSizes, 0, sizeof(clipSizes));
+  clipSizes[0] = 20 * 1024 * 1024;
 }
 
 ConnParams::~ConnParams()
@@ -101,6 +108,11 @@ void ConnParams::setCursor(const Cursor& other)
   cursor_ = new Cursor(other);
 }
 
+void ConnParams::setCursorPos(const Point& pos)
+{
+    cursorPos_ = pos;
+}
+
 bool ConnParams::supportsEncoding(rdr::S32 encoding) const
 {
   return encodings_.count(encoding) != 0;
@@ -147,6 +159,9 @@ void ConnParams::setEncodings(int nEncodings, const rdr::S32* encodings)
     case pseudoEncodingExtendedDesktopSize:
       supportsExtendedDesktopSize = true;
       break;
+    case pseudoEncodingVMwareCursorPosition:
+      supportsCursorPosition = true;
+      break;
     case pseudoEncodingDesktopName:
       supportsDesktopRename = true;
       break;
@@ -168,6 +183,9 @@ void ConnParams::setEncodings(int nEncodings, const rdr::S32* encodings)
     case pseudoEncodingContinuousUpdates:
       supportsContinuousUpdates = true;
       break;
+    case pseudoEncodingExtendedClipboard:
+      supportsExtendedClipboard = true;
+      break;
     case pseudoEncodingSubsamp1X:
       subsampling = subsampleNone;
       break;
@@ -259,3 +277,17 @@ void ConnParams::setLEDState(unsigned int state)
 {
   ledState_ = state;
 }
+
+void ConnParams::setClipboardCaps(rdr::U32 flags, const rdr::U32* lengths)
+{
+  int i, num;
+
+  clipFlags = flags;
+
+  num = 0;
+  for (i = 0;i < 16;i++) {
+    if (!(flags & (1 << i)))
+      continue;
+    clipSizes[i] = lengths[num++];
+  }
+}

common/rfb/ConnParams.h

@@ -84,6 +84,9 @@ namespace rfb {
     const Cursor& cursor() const { return *cursor_; }
     void setCursor(const Cursor& cursor);
 
+    const Point& cursorPos() const { return cursorPos_; }
+    void setCursorPos(const Point& pos);
+
     bool supportsEncoding(rdr::S32 encoding) const;
 
     void setEncodings(int nEncodings, const rdr::S32* encodings);
@@ -91,11 +94,15 @@ namespace rfb {
     unsigned int ledState() { return ledState_; }
     void setLEDState(unsigned int state);
 
+    rdr::U32 clipboardFlags() const { return clipFlags; }
+    void setClipboardCaps(rdr::U32 flags, const rdr::U32* lengths);
+
     bool useCopyRect;
 
     bool supportsLocalCursor;
     bool supportsLocalXCursor;
     bool supportsLocalCursorWithAlpha;
+    bool supportsCursorPosition;
     bool supportsDesktopResize;
     bool supportsExtendedDesktopSize;
     bool supportsDesktopRename;
@@ -107,6 +114,7 @@ namespace rfb {
     bool supportsSetDesktopSize;
     bool supportsFence;
     bool supportsContinuousUpdates;
+    bool supportsExtendedClipboard;
 
     int compressLevel;
     int qualityLevel;
@@ -136,11 +144,14 @@ namespace rfb {
     PixelFormat pf_;
     char* name_;
     Cursor* cursor_;
+    Point cursorPos_;
     std::set<rdr::S32> encodings_;
     char verStr[13];
     int verStrPos;
     unsigned int ledState_;
     SMsgHandler *shandler;
+    rdr::U32 clipFlags;
+    rdr::U32 clipSizes[16];
   };
 }
 #endif

common/rfb/JpegCompressor.cxx

@@ -85,7 +85,7 @@ JpegInitDestination(j_compress_ptr cinfo)
 
   jc->clear();
   dest->pub.next_output_byte = jc->getptr();
-  dest->pub.free_in_buffer = jc->getend() - jc->getptr();
+  dest->pub.free_in_buffer = jc->avail();
 }
 
 static boolean
@@ -95,9 +95,9 @@ JpegEmptyOutputBuffer(j_compress_ptr cinfo)
   JpegCompressor *jc = dest->instance;
 
   jc->setptr(jc->getend());
-  jc->overrun(jc->getend() - jc->getstart(), 1);
+  jc->check(jc->length());
   dest->pub.next_output_byte = jc->getptr();
-  dest->pub.free_in_buffer = jc->getend() - jc->getptr();
+  dest->pub.free_in_buffer = jc->avail();
 
   return TRUE;
 }

common/rfb/JpegCompressor.h

@@ -47,12 +47,6 @@ namespace rfb {
 
     void writeBytes(const void*, int);
 
-    inline rdr::U8* getstart() { return start; }
-
-    virtual inline size_t overrun(size_t itemSize, size_t nItems) {
-      return MemOutStream::overrun(itemSize, nItems);
-    }
-
   private:
 
     struct jpeg_compress_struct *cinfo;

common/rfb/SConnection.cxx

@@ -20,6 +20,7 @@
 #include <string.h>
 #include <rfb/Exception.h>
 #include <rfb/Security.h>
+#include <rfb/clipboardTypes.h>
 #include <rfb/msgTypes.h>
 #include <rfb/fenceTypes.h>
 #include <rfb/SMsgReader.h>
@@ -52,7 +53,8 @@ SConnection::SConnection()
   : readyForSetColourMapEntries(false),
     is(0), os(0), reader_(0), writer_(0),
     ssecurity(0), state_(RFBSTATE_UNINITIALISED),
-    preferredEncoding(encodingRaw)
+    preferredEncoding(encodingRaw),
+    clientClipboard(NULL), hasLocalClipboard(false)
 {
   defaultMajorVersion = 3;
   defaultMinorVersion = 8;
@@ -69,6 +71,7 @@ SConnection::~SConnection()
   reader_ = 0;
   delete writer_;
   writer_ = 0;
+  strFree(clientClipboard);
 }
 
 void SConnection::setStreams(rdr::InStream* is_, rdr::OutStream* os_)
@@ -281,6 +284,73 @@ void SConnection::setEncodings(int nEncodings, const rdr::S32* encodings)
   }
 
   SMsgHandler::setEncodings(nEncodings, encodings);
+
+  if (cp.supportsExtendedClipboard) {
+    rdr::U32 sizes[] = { 0 };
+    writer()->writeClipboardCaps(rfb::clipboardUTF8 |
+                                 rfb::clipboardRequest |
+                                 rfb::clipboardPeek |
+                                 rfb::clipboardNotify |
+                                 rfb::clipboardProvide,
+                                 sizes);
+  }
+}
+
+void SConnection::clientCutText(const char* str, int len)
+{
+  hasLocalClipboard = false;
+
+  strFree(clientClipboard);
+  clientClipboard = NULL;
+
+  clientClipboard = latin1ToUTF8(str);
+
+  handleClipboardAnnounce(true);
+}
+
+void SConnection::handleClipboardRequest(rdr::U32 flags)
+{
+  if (!(flags & rfb::clipboardUTF8))
+    return;
+  if (!hasLocalClipboard)
+    return;
+  handleClipboardRequest();
+}
+
+void SConnection::handleClipboardPeek(rdr::U32 flags)
+{
+  if (!hasLocalClipboard)
+    return;
+  if (cp.clipboardFlags() & rfb::clipboardNotify)
+    writer()->writeClipboardNotify(rfb::clipboardUTF8);
+}
+
+void SConnection::handleClipboardNotify(rdr::U32 flags)
+{
+  strFree(clientClipboard);
+  clientClipboard = NULL;
+
+  if (flags & rfb::clipboardUTF8) {
+    handleClipboardAnnounce(true);
+    hasLocalClipboard = false;
+  } else {
+    handleClipboardAnnounce(false);
+  }
+}
+
+void SConnection::handleClipboardProvide(rdr::U32 flags,
+                                         const size_t* lengths,
+                                         const rdr::U8* const* data)
+{
+  if (!(flags & rfb::clipboardUTF8))
+    return;
+
+  strFree(clientClipboard);
+  clientClipboard = NULL;
+
+  clientClipboard = convertLF((const char*)data[0], lengths[0]);
+
+  handleClipboardData(clientClipboard, strlen(clientClipboard));
 }
 
 void SConnection::supportsQEMUKeyEvent()
@@ -375,6 +445,58 @@ void SConnection::enableContinuousUpdates(bool enable,
 {
 }
 
+void SConnection::handleClipboardRequest()
+{
+}
+
+void SConnection::handleClipboardAnnounce(bool available)
+{
+}
+
+void SConnection::handleClipboardData(const char* data, int len)
+{
+}
+
+void SConnection::requestClipboard()
+{
+  if (clientClipboard != NULL) {
+    handleClipboardData(clientClipboard, strlen(clientClipboard));
+    return;
+  }
+
+  if (cp.supportsExtendedClipboard &&
+      (cp.clipboardFlags() & rfb::clipboardRequest))
+    writer()->writeClipboardRequest(rfb::clipboardUTF8);
+}
+
+void SConnection::announceClipboard(bool available)
+{
+  hasLocalClipboard = available;
+
+  if (cp.supportsExtendedClipboard &&
+      (cp.clipboardFlags() & rfb::clipboardNotify))
+    writer()->writeClipboardNotify(available ? rfb::clipboardUTF8 : 0);
+  else {
+    if (available)
+      handleClipboardRequest();
+  }
+}
+
+void SConnection::sendClipboardData(const char* data, int len)
+{
+  if (cp.supportsExtendedClipboard &&
+      (cp.clipboardFlags() & rfb::clipboardProvide)) {
+    CharArray filtered(convertCRLF(data));
+    size_t sizes[1] = { strlen(filtered.buf) + 1 };
+    const rdr::U8* data[1] = { (const rdr::U8*)filtered.buf };
+    writer()->writeClipboardProvide(rfb::clipboardUTF8, sizes, data);
+  } else {
+    CharArray latin1(utf8ToLatin1(data));
+
+    writer()->writeServerCutText(latin1.buf, strlen(latin1.buf));
+  }
+}
+
 void SConnection::writeFakeColourMap(void)
 {
   int i;

common/rfb/SConnection.h

@@ -73,6 +73,15 @@ namespace rfb {
 
     virtual void setEncodings(int nEncodings, const rdr::S32* encodings);
 
+    virtual void clientCutText(const char* str, int len);
+
+    virtual void handleClipboardRequest(rdr::U32 flags);
+    virtual void handleClipboardPeek(rdr::U32 flags);
+    virtual void handleClipboardNotify(rdr::U32 flags);
+    virtual void handleClipboardProvide(rdr::U32 flags,
+                                        const size_t* lengths,
+                                        const rdr::U8* const* data);
+
     virtual void supportsQEMUKeyEvent();
 
     // Methods to be overridden in a derived class
@@ -118,6 +127,25 @@ namespace rfb {
     virtual void enableContinuousUpdates(bool enable,
                                          int x, int y, int w, int h);
 
+    // handleClipboardRequest() is called whenever the client requests
+    // the server to send over its clipboard data. It will only be
+    // called after the server has first announced a clipboard change
+    // via announceClipboard().
+    virtual void handleClipboardRequest();
+
+    // handleClipboardAnnounce() is called to indicate a change in the
+    // clipboard on the client. Call requestClipboard() to access the
+    // actual data.
+    virtual void handleClipboardAnnounce(bool available);
+
+    // handleClipboardData() is called when the client has sent over
+    // the clipboard data as a result of a previous call to
+    // requestClipboard(). Note that this function might never be
+    // called if the clipboard data was no longer available when the
+    // client received the request.
+    virtual void handleClipboardData(const char* data, int len);
+
+
     virtual void add_changed_all() {}
 
     // setAccessRights() allows a security package to limit the access rights
@@ -138,6 +166,22 @@ namespace rfb {
 
     // Other methods
 
+    // requestClipboard() will result in a request to the client to
+    // transfer its clipboard data. A call to handleClipboardData()
+    // will be made once the data is available.
+    virtual void requestClipboard();
+
+    // announceClipboard() informs the client of changes to the
+    // clipboard on the server. The client may later request the
+    // clipboard data via handleClipboardRequest().
+    virtual void announceClipboard(bool available);
+
+    // sendClipboardData() transfers the clipboard data to the client
+    // and should be called whenever the client has requested the
+    // clipboard via handleClipboardRequest().
+    virtual void sendClipboardData(const char* data, int len);
+
+
     // authenticated() returns true if the client has authenticated
     // successfully.
     bool authenticated() { return (state_ == RFBSTATE_INITIALISATION ||
@@ -203,6 +247,9 @@ namespace rfb {
     SSecurity* ssecurity;
     stateEnum state_;
     rdr::S32 preferredEncoding;
+
+    char* clientClipboard;
+    bool hasLocalClipboard;
   };
 }
 #endif

common/rfb/SDesktop.h

@@ -77,6 +77,25 @@ namespace rfb {
     // pointerEvent(), keyEvent() and clientCutText() are called in response to
     // the relevant RFB protocol messages from clients.
     // See InputHandler for method signatures.
+
+    // handleClipboardRequest() is called whenever a client requests
+    // the server to send over its clipboard data. It will only be
+    // called after the server has first announced a clipboard change
+    // via VNCServer::announceClipboard().
+    virtual void handleClipboardRequest() {}
+
+    // handleClipboardAnnounce() is called to indicate a change in the
+    // clipboard on a client. Call VNCServer::requestClipboard() to
+    // access the actual data.
+    virtual void handleClipboardAnnounce(bool __unused_attr available) {}
+
+    // handleClipboardData() is called when a client has sent over
+    // the clipboard data as a result of a previous call to
+    // VNCServer::requestClipboard(). Note that this function might
+    // never be called if the clipboard data was no longer available
+    // when the client received the request.
+    virtual void handleClipboardData(const char* __unused_attr data, int len __unused_attr) {}
+
   protected:
     virtual ~SDesktop() {}
   };

common/rfb/SMsgHandler.cxx

@@ -64,6 +64,29 @@ void SMsgHandler::setEncodings(int nEncodings, const rdr::S32* encodings)
     supportsQEMUKeyEvent();
 }
 
+void SMsgHandler::handleClipboardCaps(rdr::U32 flags, const rdr::U32* lengths)
+{
+  cp.setClipboardCaps(flags, lengths);
+}
+
+void SMsgHandler::handleClipboardRequest(rdr::U32 flags)
+{
+}
+
+void SMsgHandler::handleClipboardPeek(rdr::U32 flags)
+{
+}
+
+void SMsgHandler::handleClipboardNotify(rdr::U32 flags)
+{
+}
+
+void SMsgHandler::handleClipboardProvide(rdr::U32 flags,
+                                         const size_t* lengths,
+                                         const rdr::U8* const* data)
+{
+}
+
 void SMsgHandler::supportsLocalCursor()
 {
 }

common/rfb/SMsgHandler.h

@@ -54,6 +54,15 @@ namespace rfb {
     virtual void enableContinuousUpdates(bool enable,
                                          int x, int y, int w, int h) = 0;
 
+    virtual void handleClipboardCaps(rdr::U32 flags,
+                                     const rdr::U32* lengths);
+    virtual void handleClipboardRequest(rdr::U32 flags);
+    virtual void handleClipboardPeek(rdr::U32 flags);
+    virtual void handleClipboardNotify(rdr::U32 flags);
+    virtual void handleClipboardProvide(rdr::U32 flags,
+                                        const size_t* lengths,
+                                        const rdr::U8* const* data);
+
     virtual void sendStats() = 0;
 
     virtual bool canChangeKasmSettings() const = 0;

common/rfb/SMsgReader.cxx

@@ -18,8 +18,11 @@
  */
 #include <stdio.h>
 #include <rdr/InStream.h>
+#include <rdr/ZlibInStream.h>
+
 #include <rfb/msgTypes.h>
 #include <rfb/qemuTypes.h>
+#include <rfb/clipboardTypes.h>
 #include <rfb/Exception.h>
 #include <rfb/util.h>
 #include <rfb/SMsgHandler.h>
@@ -224,11 +227,15 @@ void SMsgReader::readPointerEvent()
 void SMsgReader::readClientCutText()
 {
   is->skip(3);
-  int len = is->readU32();
+  rdr::U32 len = is->readU32();
-  if (len < 0) {
+
-    throw Exception("Cut text too long.");
+  if (len & 0x80000000) {
+    rdr::S32 slen = len;
+    slen = -slen;
+    readExtendedClipboard(slen);
+    return;
   }
-  if (len > maxCutText) {
+  if (len > (size_t)maxCutText) {
     is->skip(len);
     vlog.error("Cut text too long (%d bytes) - ignoring", len);
     return;
@@ -239,6 +246,100 @@ void SMsgReader::readClientCutText()
   handler->clientCutText(ca.buf, len);
 }
 
+void SMsgReader::readExtendedClipboard(rdr::S32 len)
+{
+  rdr::U32 flags;
+  rdr::U32 action;
+
+  if (len < 4)
+    throw Exception("Invalid extended clipboard message");
+  if (len > maxCutText) {
+    vlog.error("Extended clipboard message too long (%d bytes) - ignoring", len);
+    is->skip(len);
+    return;
+  }
+
+  flags = is->readU32();
+  action = flags & clipboardActionMask;
+
+  if (action & clipboardCaps) {
+    int i;
+    size_t num;
+    rdr::U32 lengths[16];
+
+    num = 0;
+    for (i = 0;i < 16;i++) {
+      if (flags & (1 << i))
+        num++;
+    }
+
+    if (len < (rdr::S32)(4 + 4*num))
+      throw Exception("Invalid extended clipboard message");
+
+    num = 0;
+    for (i = 0;i < 16;i++) {
+      if (flags & (1 << i))
+        lengths[num++] = is->readU32();
+    }
+
+    handler->handleClipboardCaps(flags, lengths);
+  } else if (action == clipboardProvide) {
+    rdr::ZlibInStream zis;
+
+    int i;
+    size_t num;
+    size_t lengths[16];
+    rdr::U8* buffers[16];
+
+    zis.setUnderlying(is, len - 4);
+
+    num = 0;
+    for (i = 0;i < 16;i++) {
+      if (!(flags & 1 << i))
+        continue;
+
+      lengths[num] = zis.readU32();
+      if (lengths[num] > (size_t)maxCutText) {
+        vlog.error("Extended clipboard data too long (%d bytes) - ignoring",
+                   (unsigned)lengths[num]);
+        zis.skip(lengths[num]);
+        flags &= ~(1 << i);
+        continue;
+      }
+
+      buffers[num] = new rdr::U8[lengths[num]];
+      zis.readBytes(buffers[num], lengths[num]);
+      num++;
+    }
+
+    zis.flushUnderlying();
+    zis.setUnderlying(NULL, 0);
+
+    handler->handleClipboardProvide(flags, lengths, buffers);
+
+    num = 0;
+    for (i = 0;i < 16;i++) {
+      if (!(flags & 1 << i))
+        continue;
+      delete [] buffers[num++];
+    }
+  } else {
+    switch (action) {
+    case clipboardRequest:
+      handler->handleClipboardRequest(flags);
+      break;
+    case clipboardPeek:
+      handler->handleClipboardPeek(flags);
+      break;
+    case clipboardNotify:
+      handler->handleClipboardNotify(flags);
+      break;
+    default:
+      throw Exception("Invalid extended clipboard action");
+    }
+  }
+}
+
 void SMsgReader::readRequestStats()
 {
   is->skip(3);

common/rfb/SMsgReader.h

@@ -55,6 +55,7 @@ namespace rfb {
     void readKeyEvent();
     void readPointerEvent();
     void readClientCutText();
+    void readExtendedClipboard(rdr::S32 len);
     void readRequestStats();
 
     void readQEMUMessage();

common/rfb/SMsgWriter.cxx

@@ -19,8 +19,12 @@
  */
 #include <stdio.h>
 #include <rdr/OutStream.h>
+#include <rdr/MemOutStream.h>
+#include <rdr/ZlibOutStream.h>
+
 #include <rfb/msgTypes.h>
 #include <rfb/fenceTypes.h>
+#include <rfb/clipboardTypes.h>
 #include <rfb/Exception.h>
 #include <rfb/ConnParams.h>
 #include <rfb/UpdateTracker.h>
@@ -39,6 +43,7 @@ SMsgWriter::SMsgWriter(ConnParams* cp_, rdr::OutStream* os_)
     needSetDesktopSize(false), needExtendedDesktopSize(false),
     needSetDesktopName(false), needSetCursor(false),
     needSetXCursor(false), needSetCursorWithAlpha(false),
+    needCursorPos(false),
     needLEDState(false), needQEMUKeyEvent(false)
 {
 }
@@ -88,6 +93,112 @@ void SMsgWriter::writeServerCutText(const char* str, int len)
   endMsg();
 }
 
+void SMsgWriter::writeClipboardCaps(rdr::U32 caps,
+                                    const rdr::U32* lengths)
+{
+  size_t i, count;
+
+  if (!cp->supportsExtendedClipboard)
+    throw Exception("Client does not support extended clipboard");
+
+  count = 0;
+  for (i = 0;i < 16;i++) {
+    if (caps & (1 << i))
+      count++;
+  }
+
+  startMsg(msgTypeServerCutText);
+  os->pad(3);
+  os->writeS32(-(4 + 4 * count));
+
+  os->writeU32(caps | clipboardCaps);
+
+  count = 0;
+  for (i = 0;i < 16;i++) {
+    if (caps & (1 << i))
+      os->writeU32(lengths[count++]);
+  }
+
+  endMsg();
+}
+
+void SMsgWriter::writeClipboardRequest(rdr::U32 flags)
+{
+  if (!cp->supportsExtendedClipboard)
+    throw Exception("Client does not support extended clipboard");
+  if (!(cp->clipboardFlags() & clipboardRequest))
+    throw Exception("Client does not support clipboard \"request\" action");
+
+  startMsg(msgTypeServerCutText);
+  os->pad(3);
+  os->writeS32(-4);
+  os->writeU32(flags | clipboardRequest);
+  endMsg();
+}
+
+void SMsgWriter::writeClipboardPeek(rdr::U32 flags)
+{
+  if (!cp->supportsExtendedClipboard)
+    throw Exception("Client does not support extended clipboard");
+  if (!(cp->clipboardFlags() & clipboardPeek))
+    throw Exception("Client does not support clipboard \"peek\" action");
+
+  startMsg(msgTypeServerCutText);
+  os->pad(3);
+  os->writeS32(-4);
+  os->writeU32(flags | clipboardPeek);
+  endMsg();
+}
+
+void SMsgWriter::writeClipboardNotify(rdr::U32 flags)
+{
+  if (!cp->supportsExtendedClipboard)
+    throw Exception("Client does not support extended clipboard");
+  if (!(cp->clipboardFlags() & clipboardNotify))
+    throw Exception("Client does not support clipboard \"notify\" action");
+
+  startMsg(msgTypeServerCutText);
+  os->pad(3);
+  os->writeS32(-4);
+  os->writeU32(flags | clipboardNotify);
+  endMsg();
+}
+
+void SMsgWriter::writeClipboardProvide(rdr::U32 flags,
+                                      const size_t* lengths,
+                                      const rdr::U8* const* data)
+{
+  rdr::MemOutStream mos;
+  rdr::ZlibOutStream zos;
+
+  int i, count;
+
+  if (!cp->supportsExtendedClipboard)
+    throw Exception("Client does not support extended clipboard");
+  if (!(cp->clipboardFlags() & clipboardProvide))
+    throw Exception("Client does not support clipboard \"provide\" action");
+
+  zos.setUnderlying(&mos);
+
+  count = 0;
+  for (i = 0;i < 16;i++) {
+    if (!(flags & (1 << i)))
+      continue;
+    zos.writeU32(lengths[count]);
+    zos.writeBytes(data[count], lengths[count]);
+    count++;
+  }
+
+  zos.flush();
+
+  startMsg(msgTypeServerCutText);
+  os->pad(3);
+  os->writeS32(-(4 + mos.length()));
+  os->writeU32(flags | clipboardProvide);
+  os->writeBytes(mos.data(), mos.length());
+  endMsg();
+}
+
 void SMsgWriter::writeStats(const char* str, int len)
 {
   startMsg(msgTypeStats);
@@ -204,6 +315,14 @@ bool SMsgWriter::writeSetCursorWithAlpha()
   return true;
 }
 
+void SMsgWriter::writeCursorPos()
+{
+  if (!cp->supportsEncoding(pseudoEncodingVMwareCursorPosition))
+    throw Exception("Client does not support cursor position");
+
+  needCursorPos = true;
+}
+
 bool SMsgWriter::writeLEDState()
 {
   if (!cp->supportsLEDState)
@@ -232,6 +351,8 @@ bool SMsgWriter::needFakeUpdate()
     return true;
   if (needSetCursor || needSetXCursor || needSetCursorWithAlpha)
     return true;
+  if (needCursorPos)
+    return true;
   if (needLEDState)
     return true;
   if (needQEMUKeyEvent)
@@ -284,6 +405,8 @@ void SMsgWriter::writeFramebufferUpdateStart(int nRects)
       nRects++;
     if (needSetCursorWithAlpha)
       nRects++;
+    if (needCursorPos)
+      nRects++;
     if (needLEDState)
       nRects++;
     if (needQEMUKeyEvent)
@@ -399,6 +522,18 @@ void SMsgWriter::writePseudoRects()
     needSetCursorWithAlpha = false;
   }
 
+  if (needCursorPos) {
+    const Point& cursorPos = cp->cursorPos();
+
+    if (cp->supportsEncoding(pseudoEncodingVMwareCursorPosition)) {
+      writeSetVMwareCursorPositionRect(cursorPos.x, cursorPos.y);
+    } else {
+      throw Exception("Client does not support cursor position");
+    }
+
+    needCursorPos = false;
+  }
+
   if (needSetDesktopName) {
     writeSetDesktopNameRect(cp->name());
     needSetDesktopName = false;
@@ -577,6 +712,20 @@ void SMsgWriter::writeSetCursorWithAlphaRect(int width, int height,
   }
 }
 
+void SMsgWriter::writeSetVMwareCursorPositionRect(int hotspotX, int hotspotY)
+{
+  if (!cp->supportsEncoding(pseudoEncodingVMwareCursorPosition))
+    throw Exception("Client does not support cursor position");
+  if (++nRectsInUpdate > nRectsInHeader && nRectsInHeader)
+    throw Exception("SMsgWriter::writeSetVMwareCursorRect: nRects out of sync");
+
+  os->writeS16(hotspotX);
+  os->writeS16(hotspotY);
+  os->writeU16(0);
+  os->writeU16(0);
+  os->writeU32(pseudoEncodingVMwareCursorPosition);
+}
+
 void SMsgWriter::writeLEDStateRect(rdr::U8 state)
 {
   if (!cp->supportsLEDState)

common/rfb/SMsgWriter.h

@@ -55,6 +55,14 @@ namespace rfb {
     // writeBell() and writeServerCutText() do the obvious thing.
     void writeBell();
     void writeServerCutText(const char* str, int len);
+
+    void writeClipboardCaps(rdr::U32 caps, const rdr::U32* lengths);
+    void writeClipboardRequest(rdr::U32 flags);
+    void writeClipboardPeek(rdr::U32 flags);
+    void writeClipboardNotify(rdr::U32 flags);
+    void writeClipboardProvide(rdr::U32 flags, const size_t* lengths,
+                               const rdr::U8* const* data);
+
     void writeStats(const char* str, int len);
 
     // writeFence() sends a new fence request or response to the client.
@@ -83,6 +91,9 @@ namespace rfb {
     bool writeSetXCursor();
     bool writeSetCursorWithAlpha();
 
+    // Notifies the client that the cursor pointer was moved by the server.
+    void writeCursorPos();
+
     // Same for LED state message
     bool writeLEDState();
 
@@ -138,6 +149,7 @@ namespace rfb {
     void writeSetCursorWithAlphaRect(int width, int height,
                                      int hotspotX, int hotspotY,
                                      const rdr::U8* data);
+    void writeSetVMwareCursorPositionRect(int hotspotX, int hotspotY);
     void writeLEDStateRect(rdr::U8 state);
     void writeQEMUKeyEventRect();
 
@@ -153,6 +165,7 @@ namespace rfb {
     bool needSetCursor;
     bool needSetXCursor;
     bool needSetCursorWithAlpha;
+    bool needCursorPos;
     bool needLEDState;
     bool needQEMUKeyEvent;
 

common/rfb/Timer.h

@@ -35,6 +35,8 @@ namespace rfb {
      dispatch elapsed Timer callbacks and to determine how long to wait in select() for
      the next timeout to occur.
 
+     For classes that can be derived it's best to use MethodTimer which can call a specific
+     method on the class, thus avoiding conflicts when subclassing.
   */
 
   struct Timer {
@@ -101,6 +103,19 @@ namespace rfb {
     static std::list<Timer*> pending;
   };
 
+  template<class T> class MethodTimer
+    : public Timer, public Timer::Callback {
+  public:
+    MethodTimer(T* obj_, bool (T::*cb_)(Timer*))
+      : Timer(this), obj(obj_), cb(cb_) {}
+
+    virtual bool handleTimeout(Timer* t) { return (obj->*cb)(t); }
+
+  private:
+    T* obj;
+    bool (T::*cb)(Timer*);
+  };
+
 };
 
 #endif

common/rfb/VNCSConnectionST.cxx

@@ -155,6 +155,17 @@ void VNCSConnectionST::close(const char* reason)
       server->lastDisconnectTime = time(0);
   }
 
+  try {
+    if (sock->outStream().bufferUsage() > 0) {
+      sock->cork(false);
+      sock->outStream().flush();
+      if (sock->outStream().bufferUsage() > 0)
+        vlog.error("Failed to flush remaining socket data on close");
+    }
+  } catch (rdr::Exception& e) {
+    vlog.error("Failed to flush remaining socket data on close: %s", e.str());
+  }
+
   // Just shutdown the socket and mark our state as closing.  Eventually the
   // calling code will call VNCServerST's removeSocket() method causing us to
   // be deleted.
@@ -392,7 +403,31 @@ static void keylog(unsigned keysym, const char *client) {
     flushKeylog(client);
 }
 
-void VNCSConnectionST::serverCutTextOrClose(const char *str, int len)
+void VNCSConnectionST::requestClipboardOrClose()
+{
+  try {
+    if (!(accessRights & AccessCutText)) return;
+    if (!rfb::Server::acceptCutText) return;
+    if (state() != RFBSTATE_NORMAL) return;
+    requestClipboard();
+  } catch(rdr::Exception& e) {
+    close(e.str());
+  }
+}
+
+void VNCSConnectionST::announceClipboardOrClose(bool available)
+{
+  try {
+    if (!(accessRights & AccessCutText)) return;
+    if (!rfb::Server::sendCutText) return;
+    if (state() != RFBSTATE_NORMAL) return;
+    announceClipboard(available);
+  } catch(rdr::Exception& e) {
+    close(e.str());
+  }
+}
+
+void VNCSConnectionST::sendClipboardDataOrClose(const char* data)
 {
   try {
     if (!(accessRights & AccessCutText)) return;
@@ -402,19 +437,19 @@ void VNCSConnectionST::serverCutTextOrClose(const char *str, int len)
                 sock->getPeerAddress());
       return;
     }
+    int len = strlen(data);
     const int origlen = len;
     if (rfb::Server::DLP_ClipSendMax && len > rfb::Server::DLP_ClipSendMax)
       len = rfb::Server::DLP_ClipSendMax;
-    cliplog(str, len, origlen, "sent", sock->getPeerAddress());
+    cliplog(data, len, origlen, "sent", sock->getPeerAddress());
-    if (state() == RFBSTATE_NORMAL)
+    if (state() != RFBSTATE_NORMAL) return;
-      writer()->writeServerCutText(str, len);
+    sendClipboardData(data, len);
     gettimeofday(&lastClipboardOp, NULL);
   } catch(rdr::Exception& e) {
     close(e.str());
   }
 }
 
-
 void VNCSConnectionST::setDesktopNameOrClose(const char *name)
 {
   try {
@@ -506,6 +541,15 @@ void VNCSConnectionST::renderedCursorChange()
   }
 }
 
+// cursorPositionChange() is called whenever the cursor has changed position by
+// the server.  If the client supports being informed about these changes then
+// it will arrange for the new cursor position to be sent to the client.
+
+void VNCSConnectionST::cursorPositionChange()
+{
+  setCursorPos();
+}
+
 // needRenderedCursor() returns true if this client needs the server-side
 // rendered cursor.  This may be because it does not support local cursor or
 // because the current cursor position has not been set by this client.
@@ -826,24 +870,6 @@ void VNCSConnectionST::keyEvent(rdr::U32 keysym, rdr::U32 keycode, bool down) {
   server->desktop->keyEvent(keysym, keycode, down);
 }
 
-void VNCSConnectionST::clientCutText(const char* str, int len)
-{
-  if (!(accessRights & AccessCutText)) return;
-  if (!rfb::Server::acceptCutText) return;
-  if (msSince(&lastClipboardOp) < (unsigned) rfb::Server::DLP_ClipDelay) {
-    vlog.info("DLP: client %s: refused to receive clipboard, too soon",
-              sock->getPeerAddress());
-    return;
-  }
-  const int origlen = len;
-  if (rfb::Server::DLP_ClipAcceptMax && len > rfb::Server::DLP_ClipAcceptMax)
-    len = rfb::Server::DLP_ClipAcceptMax;
-  cliplog(str, len, origlen, "received", sock->getPeerAddress());
-
-  gettimeofday(&lastClipboardOp, NULL);
-  server->desktop->clientCutText(str, len);
-}
-
 void VNCSConnectionST::framebufferUpdateRequest(const Rect& r,bool incremental)
 {
   Rect safeRect;
@@ -863,7 +889,7 @@ void VNCSConnectionST::framebufferUpdateRequest(const Rect& r,bool incremental)
 
   // Just update the requested region.
   // Framebuffer update will be sent a bit later, see processMessages().
-  Region reqRgn(r);
+  Region reqRgn(safeRect);
   if (!incremental || !continuousUpdates)
     requested.assign_union(reqRgn);
 
@@ -977,6 +1003,38 @@ void VNCSConnectionST::enableContinuousUpdates(bool enable,
   }
 }
 
+void VNCSConnectionST::handleClipboardRequest()
+{
+  if (!(accessRights & AccessCutText)) return;
+  server->handleClipboardRequest(this);
+}
+
+void VNCSConnectionST::handleClipboardAnnounce(bool available)
+{
+  if (!(accessRights & AccessCutText)) return;
+  if (!rfb::Server::acceptCutText) return;
+  server->handleClipboardAnnounce(this, available);
+}
+
+void VNCSConnectionST::handleClipboardData(const char* data, int len)
+{
+  if (!(accessRights & AccessCutText)) return;
+  if (!rfb::Server::acceptCutText) return;
+  if (msSince(&lastClipboardOp) < (unsigned) rfb::Server::DLP_ClipDelay) {
+    vlog.info("DLP: client %s: refused to receive clipboard, too soon",
+              sock->getPeerAddress());
+    return;
+  }
+  const int origlen = len;
+  if (rfb::Server::DLP_ClipAcceptMax && len > rfb::Server::DLP_ClipAcceptMax)
+    len = rfb::Server::DLP_ClipAcceptMax;
+  cliplog(data, len, origlen, "received", sock->getPeerAddress());
+
+  gettimeofday(&lastClipboardOp, NULL);
+  server->handleClipboardData(this, data, len);
+}
+
+
 // supportsLocalCursor() is called whenever the status of
 // cp.supportsLocalCursor has changed.  If the client does now support local
 // cursor, we make sure that the old server-side rendered cursor is cleaned up
@@ -1471,6 +1529,21 @@ void VNCSConnectionST::setCursor()
   }
 }
 
+// setCursorPos() is called whenever the cursor has changed position by the
+// server.  If the client supports being informed about these changes then it
+// will arrange for the new cursor position to be sent to the client.
+
+void VNCSConnectionST::setCursorPos()
+{
+  if (state() != RFBSTATE_NORMAL)
+    return;
+
+  if (cp.supportsCursorPosition) {
+    cp.setCursorPos(server->cursorPos);
+    writer()->writeCursorPos();
+  }
+}
+
 void VNCSConnectionST::setDesktopName(const char *name)
 {
   cp.setName(name);

common/rfb/VNCSConnectionST.h

@@ -75,9 +75,11 @@ namespace rfb {
     void screenLayoutChangeOrClose(rdr::U16 reason);
     void setCursorOrClose();
     void bellOrClose();
-    void serverCutTextOrClose(const char *str, int len);
     void setDesktopNameOrClose(const char *name);
     void setLEDStateOrClose(unsigned int state);
+    void requestClipboardOrClose();
+    void announceClipboardOrClose(bool available);
+    void sendClipboardDataOrClose(const char* data);
 
     // checkIdleTimeout() returns the number of milliseconds left until the
     // idle timeout expires.  If it has expired, the connection is closed and
@@ -97,6 +99,11 @@ namespace rfb {
     // cursor.
     void renderedCursorChange();
 
+    // cursorPositionChange() is called whenever the cursor has changed position by
+    // the server.  If the client supports being informed about these changes then
+    // it will arrange for the new cursor position to be sent to the client.
+    void cursorPositionChange();
+
     // needRenderedCursor() returns true if this client needs the server-side
     // rendered cursor.  This may be because it does not support local cursor
     // or because the current cursor position has not been set by this client.
@@ -170,13 +177,15 @@ namespace rfb {
     virtual void setPixelFormat(const PixelFormat& pf);
     virtual void pointerEvent(const Point& pos, int buttonMask, const bool skipClick, const bool skipRelease);
     virtual void keyEvent(rdr::U32 keysym, rdr::U32 keycode, bool down);
-    virtual void clientCutText(const char* str, int len);
     virtual void framebufferUpdateRequest(const Rect& r, bool incremental);
     virtual void setDesktopSize(int fb_width, int fb_height,
                                 const ScreenSet& layout);
     virtual void fence(rdr::U32 flags, unsigned len, const char data[]);
     virtual void enableContinuousUpdates(bool enable,
                                          int x, int y, int w, int h);
+    virtual void handleClipboardRequest();
+    virtual void handleClipboardAnnounce(bool available);
+    virtual void handleClipboardData(const char* data, int len);
     virtual void supportsLocalCursor();
     virtual void supportsFence();
     virtual void supportsContinuousUpdates();
@@ -223,6 +232,7 @@ namespace rfb {
 
     void screenLayoutChange(rdr::U16 reason);
     void setCursor();
+    void setCursorPos();
     void setDesktopName(const char *name);
     void setLEDState(unsigned int state);
     void setSocketTimeouts();

common/rfb/VNCServer.h

@@ -52,9 +52,21 @@ namespace rfb {
     // getPixelBuffer() returns a pointer to the PixelBuffer object.
     virtual PixelBuffer* getPixelBuffer() const = 0;
 
-    // serverCutText() tells the server that the cut text has changed.  This
+    // requestClipboard() will result in a request to a client to
-    // will normally be sent to all clients.
+    // transfer its clipboard data. A call to
-    virtual void serverCutText(const char* str, int len) = 0;
+    // SDesktop::handleClipboardData() will be made once the data is
+    // available.
+    virtual void requestClipboard() = 0;
+
+    // announceClipboard() informs all clients of changes to the
+    // clipboard on the server. A client may later request the
+    // clipboard data via SDesktop::handleClipboardRequest().
+    virtual void announceClipboard(bool available) = 0;
+
+    // sendClipboardData() transfers the clipboard data to a client
+    // and should be called whenever a client has requested the
+    // clipboard via SDesktop::handleClipboardRequest().
+    virtual void sendClipboardData(const char* data) = 0;
 
     // bell() tells the server that it should make all clients make a bell sound.
     virtual void bell() = 0;
@@ -69,8 +81,10 @@ namespace rfb {
     virtual void setCursor(int width, int height, const Point& hotspot,
                            const rdr::U8* cursorData) = 0;
 
-    // setCursorPos() tells the server the current position of the cursor.
+    // setCursorPos() tells the server the current position of the cursor, and
-    virtual void setCursorPos(const Point& p) = 0;
+    // whether the server initiated that change (e.g. through another X11
+    // client calling XWarpPointer()).
+    virtual void setCursorPos(const Point& p, bool warped) = 0;
 
     // setName() tells the server what desktop title to supply to clients
     virtual void setName(const char* name) = 0;

common/rfb/VNCServerST.cxx

@@ -123,8 +123,8 @@ static void parseRegionPart(const bool percents, rdr::U16 &pcdest, int &dest,
 VNCServerST::VNCServerST(const char* name_, SDesktop* desktop_)
   : blHosts(&blacklist), desktop(desktop_), desktopStarted(false),
     blockCounter(0), pb(0), blackedpb(0), ledState(ledUnknown),
-    name(strDup(name_)), pointerClient(0), comparer(0),
+    name(strDup(name_)), pointerClient(0), clipboardClient(0),
-    cursor(new Cursor(0, 0, Point(), NULL)),
+    comparer(0), cursor(new Cursor(0, 0, Point(), NULL)),
     renderedCursorInvalid(false),
     queryConnectionHandler(0), keyRemapper(&KeyRemapper::defInstance),
     lastConnectionTime(0), disableclients(false),
@@ -502,21 +502,51 @@ void VNCServerST::setScreenLayout(const ScreenSet& layout)
   }
 }
 
-void VNCServerST::bell()
+void VNCServerST::requestClipboard()
+{
+  if (clipboardClient == NULL)
+    return;
+
+  clipboardClient->requestClipboard();
+}
+
+void VNCServerST::announceClipboard(bool available)
 {
   std::list<VNCSConnectionST*>::iterator ci, ci_next;
+
+  if (available)
+    clipboardClient = NULL;
+
+  clipboardRequestors.clear();
+
   for (ci = clients.begin(); ci != clients.end(); ci = ci_next) {
     ci_next = ci; ci_next++;
-    (*ci)->bellOrClose();
+    (*ci)->announceClipboard(available);
   }
 }
 
-void VNCServerST::serverCutText(const char* str, int len)
+void VNCServerST::sendClipboardData(const char* data)
+{
+  std::list<VNCSConnectionST*>::iterator ci, ci_next;
+
+  if (strchr(data, '\r') != NULL)
+    throw Exception("Invalid carriage return in clipboard data");
+
+  for (ci = clipboardRequestors.begin();
+       ci != clipboardRequestors.end(); ci = ci_next) {
+    ci_next = ci; ci_next++;
+    (*ci)->sendClipboardDataOrClose(data);
+  }
+
+  clipboardRequestors.clear();
+}
+
+void VNCServerST::bell()
 {
   std::list<VNCSConnectionST*>::iterator ci, ci_next;
   for (ci = clients.begin(); ci != clients.end(); ci = ci_next) {
     ci_next = ci; ci_next++;
-    (*ci)->serverCutTextOrClose(str, len);
+    (*ci)->bellOrClose();
   }
 }
 
@@ -565,14 +595,17 @@ void VNCServerST::setCursor(int width, int height, const Point& newHotspot,
   }
 }
 
-void VNCServerST::setCursorPos(const Point& pos)
+void VNCServerST::setCursorPos(const Point& pos, bool warped)
 {
   if (!cursorPos.equals(pos)) {
     cursorPos = pos;
     renderedCursorInvalid = true;
     std::list<VNCSConnectionST*>::iterator ci;
-    for (ci = clients.begin(); ci != clients.end(); ci++)
+    for (ci = clients.begin(); ci != clients.end(); ci++) {
       (*ci)->renderedCursorChange();
+      if (warped)
+        (*ci)->cursorPositionChange();
+    }
   }
 }
 
@@ -1049,3 +1082,32 @@ bool VNCServerST::getComparerState()
   }
   return false;
 }
+
+void VNCServerST::handleClipboardRequest(VNCSConnectionST* client)
+{
+  clipboardRequestors.push_back(client);
+  if (clipboardRequestors.size() == 1)
+    desktop->handleClipboardRequest();
+}
+
+void VNCServerST::handleClipboardAnnounce(VNCSConnectionST* client,
+                                          bool available)
+{
+  if (available)
+    clipboardClient = client;
+  else {
+    if (client != clipboardClient)
+      return;
+    clipboardClient = NULL;
+  }
+  desktop->handleClipboardAnnounce(available);
+}
+
+void VNCServerST::handleClipboardData(VNCSConnectionST* client,
+                                      const char* data, int len)
+{
+  if (client != clipboardClient)
+    return;
+  desktop->handleClipboardData(data, len);
+}
+

common/rfb/VNCServerST.h

@@ -96,12 +96,14 @@ namespace rfb {
     virtual void setPixelBuffer(PixelBuffer* pb);
     virtual void setScreenLayout(const ScreenSet& layout);
     virtual PixelBuffer* getPixelBuffer() const { if (DLPRegion.enabled && blackedpb) return blackedpb; else return pb; }
-    virtual void serverCutText(const char* str, int len);
+    virtual void requestClipboard();
+    virtual void announceClipboard(bool available);
+    virtual void sendClipboardData(const char* data);
     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);
-    virtual void setCursorPos(const Point& p);
+    virtual void setCursorPos(const Point& p, bool warped);
     virtual void setLEDState(unsigned state);
 
     virtual void bell();
@@ -189,6 +191,10 @@ namespace rfb {
 
     void setAPIMessager(network::GetAPIMessager *msgr) { apimessager = msgr; }
 
+    void handleClipboardRequest(VNCSConnectionST* client);
+    void handleClipboardAnnounce(VNCSConnectionST* client, bool available);
+    void handleClipboardData(VNCSConnectionST* client, const char* data, int len);
+
   protected:
 
     friend class VNCSConnectionST;
@@ -217,6 +223,8 @@ namespace rfb {
 
     std::list<VNCSConnectionST*> clients;
     VNCSConnectionST* pointerClient;
+    VNCSConnectionST* clipboardClient;
+    std::list<VNCSConnectionST*> clipboardRequestors;
     std::list<network::Socket*> closingSockets;
 
     static EncCache encCache;

common/rfb/ZRLEEncoder.cxx

@@ -31,7 +31,7 @@ IntParameter zlibLevel("ZlibLevel","Zlib compression level",-1);
 
 ZRLEEncoder::ZRLEEncoder(SConnection* conn)
   : Encoder(conn, encodingZRLE, EncoderPlain, 127),
-  zos(0,0,zlibLevel), mos(129*1024)
+  zos(0,zlibLevel), mos(129*1024)
 {
   zos.setUnderlying(&mos);
 }

common/rfb/clipboardTypes.h

@@ -0,0 +1,41 @@
+/* Copyright 2019 Pierre Ossman for Cendio AB
+ * 
+ * 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.
+ */
+#ifndef __RFB_CLIPBOARDTYPES_H__
+#define __RFB_CLIPBOARDTYPES_H__
+
+namespace rfb {
+
+  // Formats
+  const unsigned int clipboardUTF8 = 1 << 0;
+  const unsigned int clipboardRTF = 1 << 1;
+  const unsigned int clipboardHTML = 1 << 2;
+  const unsigned int clipboardDIB = 1 << 3;
+  const unsigned int clipboardFiles = 1 << 4;
+
+  const unsigned int clipboardFormatMask = 0x0000ffff;
+
+  // Actions
+  const unsigned int clipboardCaps = 1 << 24;
+  const unsigned int clipboardRequest = 1 << 25;
+  const unsigned int clipboardPeek = 1 << 26;
+  const unsigned int clipboardNotify = 1 << 27;
+  const unsigned int clipboardProvide = 1 << 28;
+
+  const unsigned int clipboardActionMask = 0xff000000;
+}
+#endif

common/rfb/encodings.h

@@ -85,6 +85,12 @@ namespace rfb {
   const int pseudoEncodingVideoOutTimeLevel1 = -1986;
   const int pseudoEncodingVideoOutTimeLevel100 = -1887;
 
+  // VMware-specific
+  const int pseudoEncodingVMwareCursorPosition = 0x574d5666;
+
+  // UltraVNC-specific
+  const int pseudoEncodingExtendedClipboard = 0xC0A1E5CE;
+
   int encodingNum(const char* name);
   const char* encodingName(int num);
 }

common/rfb/util.cxx

@@ -1,4 +1,5 @@
 /* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
+ * Copyright 2011-2019 Pierre Ossman for Cendio AB
  * 
  * This is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -63,6 +64,10 @@ namespace rfb {
     delete [] s;
   }
 
+  void strFree(wchar_t* s) {
+    delete [] s;
+  }
+
 
   bool strSplit(const char* src, const char limiter, char** out1, char** out2, bool fromEnd) {
     CharArray out1old, out2old;
@@ -107,6 +112,444 @@ namespace rfb {
     dest[src ? destlen-1 : 0] = 0;
   }
 
+  char* convertLF(const char* src, size_t bytes)
+  {
+    char* buffer;
+    size_t sz;
+
+    char* out;
+    const char* in;
+    size_t in_len;
+
+    // Always include space for a NULL
+    sz = 1;
+
+    // Compute output size
+    in = src;
+    in_len = bytes;
+    while ((in_len > 0) && (*in != '\0')) {
+      if (*in != '\r') {
+        sz++;
+        in++;
+        in_len--;
+        continue;
+      }
+
+      if ((in_len < 2) || (*(in+1) != '\n'))
+        sz++;
+
+      in++;
+      in_len--;
+    }
+
+    // Alloc
+    buffer = new char[sz];
+    memset(buffer, 0, sz);
+
+    // And convert
+    out = buffer;
+    in = src;
+    in_len = bytes;
+    while ((in_len > 0) && (*in != '\0')) {
+      if (*in != '\r') {
+        *out++ = *in++;
+        in_len--;
+        continue;
+      }
+
+      if ((in_len < 2) || (*(in+1) != '\n'))
+        *out++ = '\n';
+
+      in++;
+      in_len--;
+    }
+
+    return buffer;
+  }
+
+  char* convertCRLF(const char* src, size_t bytes)
+  {
+    char* buffer;
+    size_t sz;
+
+    char* out;
+    const char* in;
+    size_t in_len;
+
+    // Always include space for a NULL
+    sz = 1;
+
+    // Compute output size
+    in = src;
+    in_len = bytes;
+    while ((in_len > 0) && (*in != '\0')) {
+      sz++;
+
+      if (*in == '\r') {
+        if ((in_len < 2) || (*(in+1) != '\n'))
+          sz++;
+      } else if (*in == '\n') {
+        if ((in == src) || (*(in-1) != '\r'))
+          sz++;
+      }
+
+      in++;
+      in_len--;
+    }
+
+    // Alloc
+    buffer = new char[sz];
+    memset(buffer, 0, sz);
+
+    // And convert
+    out = buffer;
+    in = src;
+    in_len = bytes;
+    while ((in_len > 0) && (*in != '\0')) {
+      if (*in == '\n') {
+        if ((in == src) || (*(in-1) != '\r'))
+          *out++ = '\r';
+      }
+
+      *out = *in;
+
+      if (*in == '\r') {
+        if ((in_len < 2) || (*(in+1) != '\n')) {
+          out++;
+          *out = '\n';
+        }
+      }
+
+      out++;
+      in++;
+      in_len--;
+    }
+
+    return buffer;
+  }
+
+  size_t ucs4ToUTF8(unsigned src, char* dst) {
+    if (src < 0x80) {
+      *dst++ = src;
+      *dst++ = '\0';
+      return 1;
+    } else if (src < 0x800) {
+      *dst++ = 0xc0 | (src >> 6);
+      *dst++ = 0x80 | (src & 0x3f);
+      *dst++ = '\0';
+      return 2;
+    } else if (src < 0x10000) {
+      *dst++ = 0xe0 | (src >> 12);
+      *dst++ = 0x80 | ((src >> 6) & 0x3f);
+      *dst++ = 0x80 | (src & 0x3f);
+      *dst++ = '\0';
+      return 3;
+    } else if (src < 0x110000) {
+      *dst++ = 0xf0 | (src >> 18);
+      *dst++ = 0x80 | ((src >> 12) & 0x3f);
+      *dst++ = 0x80 | ((src >> 6) & 0x3f);
+      *dst++ = 0x80 | (src & 0x3f);
+      *dst++ = '\0';
+      return 4;
+    } else {
+      return ucs4ToUTF8(0xfffd, dst);
+    }
+  }
+
+  size_t utf8ToUCS4(const char* src, size_t max, unsigned* dst) {
+    size_t count, consumed;
+
+    *dst = 0xfffd;
+
+    if (max == 0)
+      return 0;
+
+    consumed = 1;
+
+    if ((*src & 0x80) == 0) {
+      *dst = *src;
+      count = 0;
+    } else if ((*src & 0xe0) == 0xc0) {
+      *dst = *src & 0x1f;
+      count = 1;
+    } else if ((*src & 0xf0) == 0xe0) {
+      *dst = *src & 0x0f;
+      count = 2;
+    } else if ((*src & 0xf8) == 0xf0) {
+      *dst = *src & 0x07;
+      count = 3;
+    } else {
+      // Invalid sequence, consume all continuation characters
+      src++;
+      max--;
+      while ((max-- > 0) && ((*src++ & 0xc0) == 0x80))
+        consumed++;
+      return consumed;
+    }
+
+    src++;
+    max--;
+
+    while (count--) {
+      consumed++;
+
+      // Invalid or truncated sequence?
+      if ((max == 0) || ((*src & 0xc0) != 0x80)) {
+        *dst = 0xfffd;
+        return consumed;
+      }
+
+      *dst <<= 6;
+      *dst |= *src & 0x3f;
+
+      src++;
+      max--;
+    }
+
+    return consumed;
+  }
+
+  size_t ucs4ToUTF16(unsigned src, wchar_t* dst) {
+    if ((src < 0xd800) || ((src >= 0xe000) && (src < 0x10000))) {
+      *dst++ = src;
+      *dst++ = L'\0';
+      return 1;
+    } else if ((src >= 0x10000) && (src < 0x110000)) {
+      src -= 0x10000;
+      *dst++ = 0xd800 | ((src >> 10) & 0x03ff);
+      *dst++ = 0xdc00 | (src & 0x03ff);
+      *dst++ = L'\0';
+      return 2;
+    } else {
+      return ucs4ToUTF16(0xfffd, dst);
+    }
+  }
+
+  size_t utf16ToUCS4(const wchar_t* src, size_t max, unsigned* dst) {
+    *dst = 0xfffd;
+
+    if (max == 0)
+      return 0;
+
+    if ((*src < 0xd800) || (*src >= 0xe000)) {
+      *dst = *src;
+      return 1;
+    }
+
+    if (*src & 0x0400) {
+      size_t consumed;
+
+      // Invalid sequence, consume all continuation characters
+      consumed = 0;
+      while ((max > 0) && (*src & 0x0400)) {
+        src++;
+        max--;
+        consumed++;
+      }
+
+      return consumed;
+    }
+
+    *dst = *src++;
+    max--;
+
+    // Invalid or truncated sequence?
+    if ((max == 0) || ((*src & 0xfc00) != 0xdc00)) {
+      *dst = 0xfffd;
+      return 1;
+    }
+
+    *dst = 0x10000 + ((*dst & 0x03ff) << 10);
+    *dst |= *src & 0x3ff;
+
+    return 2;
+  }
+
+  char* latin1ToUTF8(const char* src, size_t bytes) {
+    char* buffer;
+    size_t sz;
+
+    char* out;
+    const char* in;
+    size_t in_len;
+
+    // Always include space for a NULL
+    sz = 1;
+
+    // Compute output size
+    in = src;
+    in_len = bytes;
+    while ((in_len > 0) && (*in != '\0')) {
+      char buf[5];
+      sz += ucs4ToUTF8(*(const unsigned char*)in, buf);
+      in++;
+      in_len--;
+    }
+
+    // Alloc
+    buffer = new char[sz];
+    memset(buffer, 0, sz);
+
+    // And convert
+    out = buffer;
+    in = src;
+    in_len = bytes;
+    while ((in_len > 0) && (*in != '\0')) {
+      out += ucs4ToUTF8(*(const unsigned char*)in, out);
+      in++;
+      in_len--;
+    }
+
+    return buffer;
+  }
+
+  char* utf8ToLatin1(const char* src, size_t bytes) {
+    char* buffer;
+    size_t sz;
+
+    char* out;
+    const char* in;
+    size_t in_len;
+
+    // Always include space for a NULL
+    sz = 1;
+
+    // Compute output size
+    in = src;
+    in_len = bytes;
+    while ((in_len > 0) && (*in != '\0')) {
+      size_t len;
+      unsigned ucs;
+
+      len = utf8ToUCS4(in, in_len, &ucs);
+      in += len;
+      in_len -= len;
+      sz++;
+    }
+
+    // Alloc
+    buffer = new char[sz];
+    memset(buffer, 0, sz);
+
+    // And convert
+    out = buffer;
+    in = src;
+    in_len = bytes;
+    while ((in_len > 0) && (*in != '\0')) {
+      size_t len;
+      unsigned ucs;
+
+      len = utf8ToUCS4(in, in_len, &ucs);
+      in += len;
+      in_len -= len;
+
+      if (ucs > 0xff)
+        *out++ = '?';
+      else
+        *out++ = (unsigned char)ucs;
+    }
+
+    return buffer;
+  }
+
+  char* utf16ToUTF8(const wchar_t* src, size_t units)
+  {
+    char* buffer;
+    size_t sz;
+
+    char* out;
+    const wchar_t* in;
+    size_t in_len;
+
+    // Always include space for a NULL
+    sz = 1;
+
+    // Compute output size
+    in = src;
+    in_len = units;
+    while ((in_len > 0) && (*in != '\0')) {
+      size_t len;
+      unsigned ucs;
+      char buf[5];
+
+      len = utf16ToUCS4(in, in_len, &ucs);
+      in += len;
+      in_len -= len;
+
+      sz += ucs4ToUTF8(ucs, buf);
+    }
+
+    // Alloc
+    buffer = new char[sz];
+    memset(buffer, 0, sz);
+
+    // And convert
+    out = buffer;
+    in = src;
+    in_len = units;
+    while ((in_len > 0) && (*in != '\0')) {
+      size_t len;
+      unsigned ucs;
+
+      len = utf16ToUCS4(in, in_len, &ucs);
+      in += len;
+      in_len -= len;
+
+      out += ucs4ToUTF8(ucs, out);
+    }
+
+    return buffer;
+  }
+
+  wchar_t* utf8ToUTF16(const char* src, size_t bytes)
+  {
+    wchar_t* buffer;
+    size_t sz;
+
+    wchar_t* out;
+    const char* in;
+    size_t in_len;
+
+    // Always include space for a NULL
+    sz = 1;
+
+    // Compute output size
+    in = src;
+    in_len = bytes;
+    while ((in_len > 0) && (*in != '\0')) {
+      size_t len;
+      unsigned ucs;
+      wchar_t buf[3];
+
+      len = utf8ToUCS4(in, in_len, &ucs);
+      in += len;
+      in_len -= len;
+
+      sz += ucs4ToUTF16(ucs, buf);
+    }
+
+    // Alloc
+    buffer = new wchar_t[sz];
+    memset(buffer, 0, sz * sizeof(wchar_t));
+
+    // And convert
+    out = buffer;
+    in = src;
+    in_len = bytes;
+    while ((in_len > 0) && (*in != '\0')) {
+      size_t len;
+      unsigned ucs;
+
+      len = utf8ToUCS4(in, in_len, &ucs);
+      in += len;
+      in_len -= len;
+
+      out += ucs4ToUTF16(ucs, out);
+    }
+
+    return buffer;
+  }
+
   unsigned msBetween(const struct timeval *first,
                      const struct timeval *second)
   {

common/rfb/util.h

@@ -1,4 +1,5 @@
 /* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
+ * Copyright 2011-2019 Pierre Ossman for Cendio AB
  * 
  * This is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -67,6 +68,7 @@ namespace rfb {
 
   char* strDup(const char* s);
   void strFree(char* s);
+  void strFree(wchar_t* s);
 
   // Returns true if split successful.  Returns false otherwise.
   // ALWAYS *copies* first part of string to out1 buffer.
@@ -83,6 +85,25 @@ namespace rfb {
   // Copies src to dest, up to specified length-1, and guarantees termination
   void strCopy(char* dest, const char* src, int destlen);
 
+  // Makes sure line endings are in a certain format
+
+  char* convertLF(const char* src, size_t bytes = (size_t)-1);
+  char* convertCRLF(const char* src, size_t bytes = (size_t)-1);
+
+  // Convertions between various Unicode formats. The returned strings are
+  // always null terminated and must be freed using strFree().
+
+  size_t ucs4ToUTF8(unsigned src, char* dst);
+  size_t utf8ToUCS4(const char* src, size_t max, unsigned* dst);
+
+  size_t ucs4ToUTF16(unsigned src, wchar_t* dst);
+  size_t utf16ToUCS4(const wchar_t* src, size_t max, unsigned* dst);
+
+  char* latin1ToUTF8(const char* src, size_t bytes = (size_t)-1);
+  char* utf8ToLatin1(const char* src, size_t bytes = (size_t)-1);
+
+  char* utf16ToUTF8(const wchar_t* src, size_t units = (size_t)-1);
+  wchar_t* utf8ToUTF16(const char* src, size_t bytes = (size_t)-1);
 
   // HELPER functions for timeout handling
 

kasmweb

@@ -0,0 +1 @@
+Subproject commit 10a7fcb91d9ca149262e94e39c216fc2b4f02e10

kasmweb/.eslintignore

@@ -1 +0,0 @@
-**/xtscancodes.js

kasmweb/.eslintrc

@@ -1,48 +0,0 @@
-{
-    "env": {
-        "browser": true,
-        "es6": true
-    },
-    "parserOptions": {
-        "sourceType": "module"
-    },
-    "extends": "eslint:recommended",
-    "rules": {
-        // Unsafe or confusing stuff that we forbid
-
-        "no-unused-vars": ["error", { "vars": "all", "args": "none", "ignoreRestSiblings": true }],
-        "no-constant-condition": ["error", { "checkLoops": false }],
-        "no-var": "error",
-        "no-useless-constructor": "error",
-        "object-shorthand": ["error", "methods", { "avoidQuotes": true }],
-        "prefer-arrow-callback": "error",
-        "arrow-body-style": ["error", "as-needed", { "requireReturnForObjectLiteral": false } ],
-        "arrow-parens": ["error", "as-needed", { "requireForBlockBody": true }],
-        "arrow-spacing": ["error"],
-        "no-confusing-arrow": ["error", { "allowParens": true }],
-
-        // Enforced coding style
-
-        "brace-style": ["error", "1tbs", { "allowSingleLine": true }],
-        "indent": ["error", 4, { "SwitchCase": 1,
-                                 "CallExpression": { "arguments": "first" },
-                                 "ArrayExpression": "first",
-                                 "ObjectExpression": "first",
-                                 "ignoreComments": true }],
-        "comma-spacing": ["error"],
-        "comma-style": ["error"],
-        "curly": ["error", "multi-line"],
-        "func-call-spacing": ["error"],
-        "func-names": ["error"],
-        "func-style": ["error", "declaration", { "allowArrowFunctions": true }],
-        "key-spacing": ["error"],
-        "keyword-spacing": ["error"],
-        "no-trailing-spaces": ["error"],
-        "semi": ["error"],
-        "space-before-blocks": ["error"],
-        "space-before-function-paren": ["error", { "anonymous": "always",
-                                                   "named": "never",
-                                                   "asyncArrow": "always" }],
-        "switch-colon-spacing": ["error"],
-    }
-}

kasmweb/.gitignore

@@ -1,14 +0,0 @@
-*.pyc
-*.o
-tests/data_*.js
-utils/rebind.so
-utils/websockify
-/node_modules
-/build
-/lib
-recordings
-*.swp
-*~
-noVNC-*.tgz
-/dist
-index.html

kasmweb/.travis.yml

@@ -1,53 +0,0 @@
-language: node_js
-sudo: false
-cache:
-  directories:
-  - node_modules
-node_js:
- - 6
-env:
-  matrix:
-  - TEST_BROWSER_NAME=chrome TEST_BROWSER_OS='Windows 10'
-# FIXME Skip tests in Linux since Sauce Labs browser versions are ancient.
-#  - TEST_BROWSER_NAME=chrome TEST_BROWSER_OS='Linux'
-  - TEST_BROWSER_NAME=chrome TEST_BROWSER_OS='OS X 10.11'
-  - TEST_BROWSER_NAME=firefox TEST_BROWSER_OS='Windows 10'
-#  - TEST_BROWSER_NAME=firefox TEST_BROWSER_OS='Linux'
-  - TEST_BROWSER_NAME=firefox TEST_BROWSER_OS='OS X 10.11'
-  - TEST_BROWSER_NAME='internet explorer' TEST_BROWSER_OS='Windows 10'
-  - TEST_BROWSER_NAME='internet explorer' TEST_BROWSER_OS='Windows 7'
-  - TEST_BROWSER_NAME=microsoftedge TEST_BROWSER_OS='Windows 10'
-  - TEST_BROWSER_NAME=safari TEST_BROWSER_OS='OS X 10.13'
-before_script: npm install -g karma-cli
-addons:
-  sauce_connect:
-    username: "directxman12"
-  jwt:
-    secure: "d3ekMYslpn6R4f0ajtRMt9SUFmNGDiItHpqaXC5T4KI0KMEsxgvEOfJot5PiFFJWg1DSpJZH6oaW2UxGZ3duJLZrXIEd/JePY8a6NtT35BNgiDPgcp+eu2Bu3rhrSNg7/HEsD1ma+JeUTnv18Ai5oMFfCCQJx2J6osIxyl/ZVxA="
-stages:
-- lint
-- test
-- name: deploy
-  if: tag is PRESENT
-jobs:
-  include:
-  - stage: lint
-    env:
-    addons:
-    before_script:
-    script: npm run lint
-  - stage: deploy
-    env:
-    addons:
-    script: skip
-    before_script: skip
-    deploy:
-      provider: npm
-      email: ossman@cendio.se
-      api_key:
-        secure: "Qq2Mi9xQawO2zlAigzshzMu2QMHvu1IaN9l0ZIivE99wHJj7eS5f4miJ9wB+/mWRRgb3E8uj9ZRV24+Oc36drlBTU9sz+lHhH0uFMfAIseceK64wZV9sLAZm472fmPp2xdUeTCCqPaRy7g1XBqiJ0LyZvEFLsRijqcLjPBF+b8w="
-      on:
-        tags: true
-        repo: novnc/noVNC
-
-

kasmweb/AUTHORS

@@ -1,13 +0,0 @@
-maintainers:
-- Joel Martin (@kanaka)
-- Solly Ross (@directxman12)
-- Samuel Mannehed for Cendio AB (@samhed)
-- Pierre Ossman for Cendio AB (@CendioOssman)
-maintainersEmeritus:
-- @astrand 
-contributors:
-# There are a bunch of people that should be here.
-# If you want to be on this list, feel free send a PR
-# to add yourself.
-- jalf <git@jalf.dk>
-- NTT corp.

kasmweb/LICENSE.txt

@@ -1,68 +0,0 @@
-noVNC is Copyright (C) 2018 The noVNC Authors
-(./AUTHORS)
-
-The noVNC core library files are licensed under the MPL 2.0 (Mozilla
-Public License 2.0). The noVNC core library is composed of the
-Javascript code necessary for full noVNC operation. This includes (but
-is not limited to):
-
-    core/**/*.js
-    app/*.js
-    test/playback.js
-
-The HTML, CSS, font and images files that included with the noVNC
-source distibution (or repository) are not considered part of the
-noVNC core library and are licensed under more permissive licenses.
-The intent is to allow easy integration of noVNC into existing web
-sites and web applications.
-
-The HTML, CSS, font and image files are licensed as follows:
-
-    *.html                     : 2-Clause BSD license
-
-    app/styles/*.css           : 2-Clause BSD license
-
-    app/styles/Orbitron*       : SIL Open Font License 1.1
-                                 (Copyright 2009 Matt McInerney)
-
-    app/images/                : Creative Commons Attribution-ShareAlike
-                                 http://creativecommons.org/licenses/by-sa/3.0/
-
-Some portions of noVNC are copyright to their individual authors.
-Please refer to the individual source files and/or to the noVNC commit
-history: https://github.com/novnc/noVNC/commits/master
-
-The are several files and projects that have been incorporated into
-the noVNC core library. Here is a list of those files and the original
-licenses (all MPL 2.0 compatible):
-
-    core/base64.js          : MPL 2.0
-
-    core/des.js             : Various BSD style licenses
-
-    vendor/pako/            : MIT
-
-    vendor/browser-es-module-loader/src/ : MIT
-
-    vendor/browser-es-module-loader/dist/ : Various BSD style licenses
-
-    vendor/promise.js       : MIT
-
-Any other files not mentioned above are typically marked with
-a copyright/license header at the top of the file. The default noVNC
-license is MPL-2.0.
-
-The following license texts are included:
-
-    docs/LICENSE.MPL-2.0
-    docs/LICENSE.OFL-1.1
-    docs/LICENSE.BSD-3-Clause (New BSD)
-    docs/LICENSE.BSD-2-Clause (Simplified BSD / FreeBSD)
-    vendor/pako/LICENSE (MIT)
-
-Or alternatively the license texts may be found here:
-
-    http://www.mozilla.org/MPL/2.0/
-    http://scripts.sil.org/OFL
-    http://en.wikipedia.org/wiki/BSD_licenses
-    https://opensource.org/licenses/MIT

kasmweb/README.md

@@ -1,151 +0,0 @@
-## noVNC: HTML VNC Client Library and Application
-
-[![Build Status](https://travis-ci.org/novnc/noVNC.svg?branch=master)](https://travis-ci.org/novnc/noVNC)
-
-### Description
-
-noVNC is both a HTML VNC client JavaScript library and an application built on
-top of that library. noVNC runs well in any modern browser including mobile
-browsers (iOS and Android).
-
-Many companies, projects and products have integrated noVNC including
-[OpenStack](http://www.openstack.org),
-[OpenNebula](http://opennebula.org/),
-[LibVNCServer](http://libvncserver.sourceforge.net), and
-[ThinLinc](https://cendio.com/thinlinc). See
-[the Projects and Companies wiki page](https://github.com/novnc/noVNC/wiki/Projects-and-companies-using-noVNC)
-for a more complete list with additional info and links.
-
-### Table of Contents
-
-- [News/help/contact](#newshelpcontact)
-- [Features](#features)
-- [Screenshots](#screenshots)
-- [Browser Requirements](#browser-requirements)
-- [Server Requirements](#server-requirements)
-- [Quick Start](#quick-start)
-- [Integration and Deployment](#integration-and-deployment)
-- [Authors/Contributors](#authorscontributors)
-
-### News/help/contact
-
-The project website is found at [novnc.com](http://novnc.com).
-Notable commits, announcements and news are posted to
-[@noVNC](http://www.twitter.com/noVNC).
-
-If you are a noVNC developer/integrator/user (or want to be) please join the
-[noVNC discussion group](https://groups.google.com/forum/?fromgroups#!forum/novnc).
-
-Bugs and feature requests can be submitted via
-[github issues](https://github.com/novnc/noVNC/issues). If you have questions
-about using noVNC then please first use the
-[discussion group](https://groups.google.com/forum/?fromgroups#!forum/novnc).
-We also have a [wiki](https://github.com/novnc/noVNC/wiki/) with lots of
-helpful information.
-
-If you are looking for a place to start contributing to noVNC, a good place to
-start would be the issues that are marked as
-["patchwelcome"](https://github.com/novnc/noVNC/issues?labels=patchwelcome).
-Please check our
-[contribution guide](https://github.com/novnc/noVNC/wiki/Contributing) though.
-
-If you want to show appreciation for noVNC you could donate to a great non-
-profits such as:
-[Compassion International](http://www.compassion.com/),
-[SIL](http://www.sil.org),
-[Habitat for Humanity](http://www.habitat.org),
-[Electronic Frontier Foundation](https://www.eff.org/),
-[Against Malaria Foundation](http://www.againstmalaria.com/),
-[Nothing But Nets](http://www.nothingbutnets.net/), etc.
-Please tweet [@noVNC](http://www.twitter.com/noVNC) if you do.
-
-
-### Features
-
-* Supports all modern browsers including mobile (iOS, Android)
-* Supported VNC encodings: raw, copyrect, rre, hextile, tight, tightPNG
-* Supports scaling, clipping and resizing the desktop
-* Local cursor rendering
-* Clipboard copy/paste
-* Licensed mainly under the [MPL 2.0](http://www.mozilla.org/MPL/2.0/), see
-  [the license document](LICENSE.txt) for details
-
-### Screenshots
-
-Running in Firefox before and after connecting:
-
-<img src="http://novnc.com/img/noVNC-1-login.png" width=400>&nbsp;
-<img src="http://novnc.com/img/noVNC-3-connected.png" width=400>
-
-See more screenshots
-[here](http://novnc.com/screenshots.html).
-
-
-### Browser Requirements
-
-noVNC uses many modern web technologies so a formal requirement list is
-not available. However these are the minimum versions we are currently
-aware of:
-
-* Chrome 49, Firefox 44, Safari 10, Opera 36, IE 11, Edge 12
-
-
-### Server Requirements
-
-noVNC follows the standard VNC protocol, but unlike other VNC clients it does
-require WebSockets support. Many servers include support (e.g.
-[x11vnc/libvncserver](http://libvncserver.sourceforge.net/),
-[QEMU](http://www.qemu.org/), and
-[MobileVNC](http://www.smartlab.at/mobilevnc/)), but for the others you need to
-use a WebSockets to TCP socket proxy. noVNC has a sister project
-[websockify](https://github.com/novnc/websockify) that provides a simple such
-proxy.
-
-
-### Quick Start
-
-* Use the launch script to automatically download and start websockify, which
-  includes a mini-webserver and the WebSockets proxy. The `--vnc` option is
-  used to specify the location of a running VNC server:
-
-    `./utils/launch.sh --vnc localhost:5901`
-
-* Point your browser to the cut-and-paste URL that is output by the launch
-  script. Hit the Connect button, enter a password if the VNC server has one
-  configured, and enjoy!
-
-
-### Integration and Deployment
-
-Please see our other documents for how to integrate noVNC in your own software,
-or deploying the noVNC application in production environments:
-
-* [Embedding](docs/EMBEDDING.md) - For the noVNC application
-* [Library](docs/LIBRARY.md) - For the noVNC JavaScript library
-
-
-### Authors/Contributors
-
-See [AUTHORS](AUTHORS) for a (full-ish) list of authors.  If you're not on
-that list and you think you should be, feel free to send a PR to fix that.
-
-* Core team:
-    * [Joel Martin](https://github.com/kanaka)
-    * [Samuel Mannehed](https://github.com/samhed) (Cendio)
-    * [Peter Åstrand](https://github.com/astrand) (Cendio)
-    * [Solly Ross](https://github.com/DirectXMan12) (Red Hat / OpenStack)
-    * [Pierre Ossman](https://github.com/CendioOssman) (Cendio)
-
-* Notable contributions:
-    * UI and Icons : Pierre Ossman, Chris Gordon
-    * Original Logo : Michael Sersen
-    * tight encoding : Michael Tinglof (Mercuri.ca)
-
-* Included libraries:
-    * base64 : Martijn Pieters (Digital Creations 2), Samuel Sieb (sieb.net)
-    * DES : Dave Zimmerman (Widget Workshop), Jef Poskanzer (ACME Labs)
-    * Pako : Vitaly Puzrin (https://github.com/nodeca/pako)
-
-Do you want to be on this list? Check out our
-[contribution guide](https://github.com/novnc/noVNC/wiki/Contributing) and
-start hacking!

kasmweb/VERSION

@@ -1 +0,0 @@
-1.0.0

kasmweb/app/error-handler.js

@@ -1,58 +0,0 @@
-// NB: this should *not* be included as a module until we have
-// native support in the browsers, so that our error handler
-// can catch script-loading errors.
-
-// No ES6 can be used in this file since it's used for the translation
-/* eslint-disable prefer-arrow-callback */
-
-(function _scope() {
-    "use strict";
-
-    // Fallback for all uncaught errors
-    function handleError(event, err) {
-        try {
-            const msg = document.getElementById('noVNC_fallback_errormsg');
-
-            // Only show the initial error
-            if (msg.hasChildNodes()) {
-                return false;
-            }
-
-            let div = document.createElement("div");
-            div.classList.add('noVNC_message');
-            div.appendChild(document.createTextNode(event.message));
-            msg.appendChild(div);
-
-            if (event.filename) {
-                div = document.createElement("div");
-                div.className = 'noVNC_location';
-                let text = event.filename;
-                if (event.lineno !== undefined) {
-                    text += ":" + event.lineno;
-                    if (event.colno !== undefined) {
-                        text += ":" + event.colno;
-                    }
-                }
-                div.appendChild(document.createTextNode(text));
-                msg.appendChild(div);
-            }
-
-            if (err && err.stack) {
-                div = document.createElement("div");
-                div.className = 'noVNC_stack';
-                div.appendChild(document.createTextNode(err.stack));
-                msg.appendChild(div);
-            }
-
-            document.getElementById('noVNC_fallback_error')
-                .classList.add("noVNC_open");
-        } catch (exc) {
-            document.write("Kasm has encountered an error.");
-        }
-        // Don't return true since this would prevent the error
-        // from being printed to the browser console.
-        return false;
-    }
-    window.addEventListener('error', function onerror(evt) { handleError(evt, evt.error); });
-    window.addEventListener('unhandledrejection', function onreject(evt) { handleError(evt.reason, evt.reason); });
-})();

kasmweb/app/images/alt.svg

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