Laboratoire ICAR » Plateforme TXM

The TXM Windows launcher builds the TXM user directory path using the HOMEDRIVE and HOMEPATH environment variables. See #1931 ticket.

If the user unplugs the network (cable/wifi) then the HOMESHARE=HOMEDRIVE+HOMEPATH directory does not exist (IF EXIST) and TXM can't start.

Solution 1¶

A solution is to test the directory existence in the TXM.bat script and try the USERPROFILE path instead.

If the USERPROFILE path does not exist also, abort TXM launch.

set installdir=%~dp0
set DEBUG=0

set USERHOME=%HOMEDRIVE%%HOMEPATH%
echo "USERHOME=%USERHOME%" 
IF EXIST %USERHOME% GOTO USERHOMEOK
set USERHOME=%USERPROFILE%\

IF EXIST %USERHOME% GOTO USERHOMEOK2
echo "HOMEDRIVE+HOMEPATH = %HOMEDRIVE%%HOMEPATH% and USERPROFILE = %USERPROFILE% do not exist. Unable to find TXM configuration, aborting TXM launch." 
exit

:USERHOMEOK2
echo "HOMEDRIVE+HOMEPATH = %HOMEDRIVE%%HOMEPATH% does not exist, using USERPROFILE = %USERPROFILE% value instead." 

:USERHOMEOK

cons: this solution is ambiguous and the user&admin don't know where the TXM files are stored.

Solution 2¶

Windows environment variables:

• HOMEDRIVE%HOMEPATH% : any pc (first launch, next launches), connected, always access to the same distant drive TXM HOME directory
• USERPROFILE : same pc (first launch, next launches), connected or not, always access to the same local drive (C:\) TXM HOME directory

Add a new NSIS install option "roaming profile" with 2 values: false (default) and true

if "roaming profile" is set, the TXM.bat script will always try to use the HOMEDRIVE%HOMEPATH% (the script aborts if not available and show a dialog "TXM could not starts TXM using HOMEDRIVE%HOMEPATH% directory, please contact your admin or install TXM without the 'roaming profile' option")
if not it will always use the USERPROFILE directory (the script aborts if not available and show a dialog "TXM could not starts TXM using USERPROFILE directory")

cons: is HOMEDRIVE%HOMEPATH% always pointing to the roaming account files ?

Solution 3¶

Drive TXM user home directory using a specific environment variable called TXMHOME the home directory path to use.

TXM.bat algorithm to set the user home directory is:

• if TXMHOME is set
  • if TXMHOME exists
    • then run TXM
    • else abort and show a dialog "TXM could not starts TXM using TXMHOME=%TXMHOME% directory"
• else use USERPROFILE
  • if USERPROFILE exists
    • then run TXM
    • else abort TXM launch and show a dialog "TXM could not starts TXM using USERPROFILE=%USERPROFILE% directory"

cons: admins must set the TXMHOME if they have roaming account

Solution 4 (to finalize)¶

Drive TXM user home directory using 2 specific environment variables:

• TXMSHAREDHOME: the distant home directory to use
• TXMHOME: the local home directory to use

Then TXM.bat algorithm to set the user home directory is:

1. to use TXMSHAREDHOME
2. if TXMSHAREDHOME is not reachable to use TXMHOME
3. if TXMHOME is not reachable to use USERPROFILE
4. if USERPROFILE is not reachable abort TXM launch and show a dialog "TXM could not starts TXM using USERPROFILE directory"

cons: admins must set the TXMSHAREDHOME if they have roaming account and TXMHOME