Issue 119950

Tested by Yan Ji on a Windows 2008 server. When allow one user to remote log in with multiple sessions, AOO 3.4 is not stable and will crash after some operations.  
To support multiple session for one user, I think rearchitect single IPC to TS session managment is not enough. If allow multiple AOO instance can be run isolated for one user, the data in user directory must be synchronized correctly such as extensions, .xcu and other configuration files. So I suggest that we use the simple way that do below mentioned in Certification requirements for Windows 8
"If an app does not support multiple user sessions or remote access, it must clearly state this when launched from this kind of session"
That is when AOO launched, check if there is another AOO instance is in another TS session for same user. If does, popup a warning dialog and exit.

Created attachment 78463 [details]
patch for warn and exit on multi terminal session case

This patch use a trick way to detect if there is another soffice.bin instance launched by the same user but in another terminal session. One named pipe can be created many time with default parameters in mutli terminal session enabled env. 
So in officeipcthread.cxx, change the detect logic for SingleIPC named piped. Now will try to connect to an existing pipe first. If can be connected, then create it. It can not be created if the existing pipe is created in the same terminal session. But it can be created if the existing pipe is opened in another terminal session.
And other codes is used to pass the error code and show the error message.

Created attachment 78481 [details]
new patch for warn and exit on multi terminal session case

Because the warning dialog will be displayed before Desktop::Main() method called. So can not use variable such as "%PRODUCTNAME" in the warning message. Do re-wording for the warning message in the new patch.

Created attachment 78482 [details]
Screen snapshot of the warning dialog in mutiple terminal session environment

This warning dialog will be popup in below scenario:
1. A user login Windows Server and launch the openoffice from remote desktop terminal from local. Keep the openoffice running.
2. The user login the Windows server with same username in another terminal session. (The desktop is different from previous one)
3. The user launch openoffice from the new terminal session. The warning dialog will be opened.

Note: On Windows server 2008/2008R2, defautly one user can only have one terminal session. Below is a link to enable multiple terminal session for one user on Windows server 2008/R2
http://technet.microsoft.com/en-us/library/cc754762.aspx

Created attachment 78520 [details]
patch that only contains dialog string

Add a patch that only add the string used by the warning dialog. It can be used for translation

Created attachment 78521 [details]
new patch only contains dialog string

String is updated after ID review. So update the patch

I have committed the string patch to AOO3.4.1 by revision r1355344 at first to catch up translation.

Created attachment 78532 [details]
updated patch for warn and exit on multi terminal session case

Update the patch. Remove display the untranslated "Fatal Error" string on warning dialog title.

Created attachment 78533 [details]
Updated screen snapshot of the warning dialog

Updated screen snapshot of the warning dialog. Remove "Fatal Error" string on dialog title.

set release blocker flag

"jsc" committed SVN revision 1363359 into trunk:
#119950# introduce new warning message box to inform about further running te...

"jsc" committed SVN revision 1363360 into branches/AOO34:
#119950 merge fix from trunk

patch reviewed and integrated in trunk and branch

set target milestone AOO 3.4.1

Verified fixed in build r1400866,