Re: 64-bit Clipboard troubles
On 10/06/2013 22:39, David Stacey wrote: On 10/06/13 14:30, Jon TURNEY wrote: On 09/06/2013 19:59, David Stacey wrote: I am trying to package keepassx for 64-bit Cygwin, and have noticed a difference between the way the clipboard functions under 32-bit and 64-bit Cygwin/X. Essentially, keepassx is an encrypted password database that copies your username and password to the clipboard. Then, you can paste these into a web site (say) to log in. When I run keepassx (both 32-bit and 64-bit builds) using the 32-bit version of XWin, keepassx copies the username and password to the clipboard, and these can be pasted into a native Windows web browser (e.g. Firefox). However, when I run keepassx (again, both 32-bit and 64-bit builds) using the 64-bit version of XWin, the procedure breaks: I instruct keepassx to copy to the clipboard, but when I paste in the web browser, no text is pasted. Sorry, integration between the native and X clipboards is broken in 64-bit XWin. Unfortunately, this is rather complex to fix and I haven't found the time to do so yet. Thank you for your reply. I've sent an RFU for keepassx along with a link to your reply. If and when you tie the two clipboards together, keepassx should just start working - there shouldn't be a need to rebuild it, but I'll do that if necessary. This should be working as of xserver 1.14.1-2. Please test if you can and let me know if there are any problems. On 10/06/2013 14:30, Jon TURNEY wrote: I mentioned that my testcase programme doesn't quite work as I intended: writing to the clipboard using Qt4 and reading it back by reading /dev/clipboard fails when using both 32-bit and 64-bit XWin. I don't understand why, but this is probably down to my own limited understanding of the clipboard in X. Thanks for writing this useful testcase. From a brief glance, the test looks well formed, so I'll also try to take a look at why test 2 always fails, I guess this indicates some bug in the clipboard integration. Looking again, I think maybe that the problem with test 2 is that it's necessary for Qt's main event loop to be running for pastes from the X clipboard to work. -- Jon TURNEY Volunteer Cygwin/X X Server maintainer -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: 64-bit Clipboard troubles
On 21/06/13 13:33, Jon TURNEY wrote: On 10/06/2013 22:39, David Stacey wrote: On 10/06/13 14:30, Jon TURNEY wrote: On 09/06/2013 19:59, David Stacey wrote: I am trying to package keepassx for 64-bit Cygwin, and have noticed a difference between the way the clipboard functions under 32-bit and 64-bit Cygwin/X. Essentially, keepassx is an encrypted password database that copies your username and password to the clipboard. Then, you can paste these into a web site (say) to log in. When I run keepassx (both 32-bit and 64-bit builds) using the 32-bit version of XWin, keepassx copies the username and password to the clipboard, and these can be pasted into a native Windows web browser (e.g. Firefox). However, when I run keepassx (again, both 32-bit and 64-bit builds) using the 64-bit version of XWin, the procedure breaks: I instruct keepassx to copy to the clipboard, but when I paste in the web browser, no text is pasted. Sorry, integration between the native and X clipboards is broken in 64-bit XWin. Unfortunately, this is rather complex to fix and I haven't found the time to do so yet. Thank you for your reply. I've sent an RFU for keepassx along with a link to your reply. If and when you tie the two clipboards together, keepassx should just start working - there shouldn't be a need to rebuild it, but I'll do that if necessary. This should be working as of xserver 1.14.1-2. Please test if you can and let me know if there are any problems. Thank you for implementing this functionality. I have tested xserver 1.14.1-2 and can confirm that this is working - keepassx can copy URLs, usernames and passwords into the Windows clipboard. Many thanks once again, Dave. -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: 64-bit Clipboard troubles
On 09/06/2013 19:59, David Stacey wrote: I am trying to package keepassx for 64-bit Cygwin, and have noticed a difference between the way the clipboard functions under 32-bit and 64-bit Cygwin/X. Essentially, keepassx is an encrypted password database that copies your username and password to the clipboard. Then, you can paste these into a web site (say) to log in. When I run keepassx (both 32-bit and 64-bit builds) using the 32-bit version of XWin, keepassx copies the username and password to the clipboard, and these can be pasted into a native Windows web browser (e.g. Firefox). However, when I run keepassx (again, both 32-bit and 64-bit builds) using the 64-bit version of XWin, the procedure breaks: I instruct keepassx to copy to the clipboard, but when I paste in the web browser, no text is pasted. Sorry, integration between the native and X clipboards is broken in 64-bit XWin. Unfortunately, this is rather complex to fix and I haven't found the time to do so yet. I mentioned that my testcase programme doesn't quite work as I intended: writing to the clipboard using Qt4 and reading it back by reading /dev/clipboard fails when using both 32-bit and 64-bit XWin. I don't understand why, but this is probably down to my own limited understanding of the clipboard in X. Thanks for writing this useful testcase. From a brief glance, the test looks well formed, so I'll also try to take a look at why test 2 always fails, I guess this indicates some bug in the clipboard integration. -- Jon TURNEY Volunteer Cygwin/X X Server maintainer -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: 64-bit Clipboard troubles
On 10/06/13 14:30, Jon TURNEY wrote: On 09/06/2013 19:59, David Stacey wrote: I am trying to package keepassx for 64-bit Cygwin, and have noticed a difference between the way the clipboard functions under 32-bit and 64-bit Cygwin/X. Essentially, keepassx is an encrypted password database that copies your username and password to the clipboard. Then, you can paste these into a web site (say) to log in. When I run keepassx (both 32-bit and 64-bit builds) using the 32-bit version of XWin, keepassx copies the username and password to the clipboard, and these can be pasted into a native Windows web browser (e.g. Firefox). However, when I run keepassx (again, both 32-bit and 64-bit builds) using the 64-bit version of XWin, the procedure breaks: I instruct keepassx to copy to the clipboard, but when I paste in the web browser, no text is pasted. Sorry, integration between the native and X clipboards is broken in 64-bit XWin. Unfortunately, this is rather complex to fix and I haven't found the time to do so yet. Thank you for your reply. I've sent an RFU for keepassx along with a link to your reply. If and when you tie the two clipboards together, keepassx should just start working - there shouldn't be a need to rebuild it, but I'll do that if necessary. Thanks again, Dave. -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
64-bit Clipboard troubles
I am trying to package keepassx for 64-bit Cygwin, and have noticed a
difference between the way the clipboard functions under 32-bit and
64-bit Cygwin/X. Essentially, keepassx is an encrypted password database
that copies your username and password to the clipboard. Then, you can
paste these into a web site (say) to log in.
When I run keepassx (both 32-bit and 64-bit builds) using the 32-bit
version of XWin, keepassx copies the username and password to the
clipboard, and these can be pasted into a native Windows web browser
(e.g. Firefox). However, when I run keepassx (again, both 32-bit and
64-bit builds) using the 64-bit version of XWin, the procedure breaks: I
instruct keepassx to copy to the clipboard, but when I paste in the web
browser, no test is pasted.
I attempted to write a testcase programme to access the clipboard in
various ways. The programme doesn't work as I had quite intended (which
is almost certainly down to my limited understanding of how the
clipboard works in X), but it does highlight differences between 32-bit
and 64-bit XWin, so I have attached it in case it is useful.
The testcase programme reads and writes to the clipboard using two
techniques - either through Qt4 (identical to the code used in keepassx)
or by accessing /dev/clipboard. The difference comes when writing to the
clipboard by writing to /dev/clipboard and then reading it back using
Qt4 - under 32-bit XWin this succeeds (i.e. the correct text is read
back), but under 64-bit XWin an empty string is read.
I mentioned that my testcase programme doesn't quite work as I intended:
writing to the clipboard using Qt4 and reading it back by reading
/dev/clipboard fails when using both 32-bit and 64-bit XWin. I don't
understand why, but this is probably down to my own limited
understanding of the clipboard in X.
Here is my environment: I'm running Windows 7 Ultimate x64 SP1.
32-bit Cygwin: Qt4-4.8.4-2 with xorg-server-1.14.1-1
64-bit Cygwin: Qt4-4.8.4-3 with xorg-server-1.14.1-1
The two Cygwin installations are installed side-by-side.
The 32-bit build of keepassx can be found in your favourite Cygwin
mirror; if you need the 64-bit build then you can download it here:
BASEURL=http://dl.dropbox.com/sh/7y1yn4whbyho9a7
wget --no-check-certificate --no-host-directories --force-directories
--cut-dirs=6 \
${BASEURL}/gMetoiuG3_/64bit/release/KDE/keepassx/keepassx-0.4.3-1-src.tar.bz2
\
${BASEURL}/faOgOyuoYS/64bit/release/KDE/keepassx/keepassx-0.4.3-1.tar.bz2 \
${BASEURL}/xaqPOGFz3J/64bit/release/KDE/keepassx/setup.hint \
${BASEURL}/U82Dz9jF1S/64bit/release/KDE/keepassx/keepassx-debuginfo/keepassx-debuginfo-0.4.3-1.tar.bz2
\
${BASEURL}/J4n6_izWKV/64bit/release/KDE/keepassx/keepassx-debuginfo/setup.hint
As the behaviour is different depending on whether I start 'XWin
-multiwindow' on 32-bit or 64-bit Cygwin, I am posting here. If this is
nothing to do with the xfree list then please accept my apologies and I
will take the discussion to the main Cygwin list.
Apologies also for the length of the post, but hopefully there's enough
information here to help to track down the cause of the problem.
Many thanks in advance for your help,
Dave.
// Compile: g++ -I/usr/include/qt4 -L/usr/lib/qt4/lib -o qt4_clip qt4_clip.cpp -lQtGui -lQtCore
#include QtCore/QString
#include QtGui/QApplication
#include QtGui/QClipboard
#include fstream
#include iostream
#include string
#include unistd.h
// Abstract class to define a generic clipboard accessor.
class CClipboardAccess
{
public:
explicit CClipboardAccess(const std::string name) : Name(name) {}
virtual ~CClipboardAccess() {}
inline const std::string GetName() const { return this-Name; }
virtual void ClearClipboard() const = 0;
virtual void SetClipboard(const std::string str) const = 0;
virtual std::string GetClipboard() const = 0;
private:
std::string Name;
};
// A class to access the clipboard using the Qt QClipboard.
class CQtClipboardAccess : public CClipboardAccess
{
public:
explicit CQtClipboardAccess(QApplication app) : CClipboardAccess(QClipboard), pApp(app), pClip(QApplication::clipboard()) {}
virtual ~CQtClipboardAccess() {}
virtual void ClearClipboard() const
{
this-pApp-processEvents();
this-pClip-clear(QClipboard::Clipboard);
if (this-pClip-supportsSelection())
this-pClip-clear(QClipboard::Selection);
}
virtual void SetClipboard(const std::string str) const
{
this-pApp-processEvents();
this-pClip-setText(str.c_str(), QClipboard::Clipboard);
if (this-pClip-supportsSelection())
this-pClip-setText(str.c_str(), QClipboard::Selection);
}
virtual std::string GetClipboard() const
{
this-pApp-processEvents();
return this-pClip-text(QClipboard::Clipboard).toStdString();
}
private:
QApplication *pApp;
QClipboard *pClip;
};
// A class to access the clipboard by reading / writing to '/dev/clipboard'.
class CCygwinClipboardAccess : public CClipboardAccess
{
public:
CCygwinClipboardAccess() :
