Question

I have developed a TWiki Environment on my laptop and am now trying to get it installed for the whole company. TWiki is installed on lek.gnat.com but the only access to this TWiki web is https://www.gnat.com/twiki/.

The only pages which are visible are those that are explicitly addressed such as

https://www.gnat.com/twiki/bin/view/Main/ActWebHome or https://www.gnat.com/twiki/vin/view/Main/ActUsers

When we try to reference any of the links in the page, say clicking on WesEmbry in the ActUsers page, we get a reference to

http://foo.gnat.com/twiki/bin/view/Main/WesEmbry which of course gives a forbidden page error.

This is certainly because the CGI PATH_INFO is being set to http://foo.gnat.com/twiki/bin

testenv is showing this and the "Test this now" link for PATH_INFO is of course failing.

The environment variables show that

HTTP_HOST is foo.gnat.com HTTP_X_FORWARDED_HOST is www.gnat.com REMOTE_HOST is plym.gnat.com REMOTE_PORT is 41398 SERVER_NAME is foo.gnat.com SERVER_PORT is 80

What should I set to get a relative path for links to the TWiki webs?

• TWiki version:01 Feb 03
• Perl version: 5.6.0
• Web server & version:Apache 1.3.27
• Server OS:Linux 2.4.18
• Web browser & version: Mozilla 1.2.1
• Client OS: Linux 2.4.20

-- WesEmbry - 09 Jul 2003

Answer

While waiting to answer for real experts, what is value of $defaultUrlHost variable in your lib/TWiki.cfg file? Is it foo.gnat.com of www.gnat.com?

-- PeterMasiar - 10 Jul 2003

Answer

$defaultUrlHost is currently set to foo.gnat.com so that it is the same as $HTTP_HOST.

I did set it to www.gnat.com but this did not change the behavior and testenv complained about it.

-- WesEmbry - 10 Jul 2003

TWiki picks the http protocol and host from the cgi environment. This is because in some installations TWiki is accessed as http and https for the same installation. The $defaultUrlHost variable is only used in case TWiki is accessed by a shell script (e.g. a cron job).

Your environment is kind of unusual. The problem seems to be HTTP_HOST = foo.gnat.com. Check your Apache configuration if you can set that to www.gnat.com.

As a workaround you could force TWiki to use $defaultUrlHost in all cases. Do that in TWiki.pm, sub initialize, by adding the red line:

    # initialize $urlHost and $scriptUrlPath 
    if( ( $theUrl ) && ( $theUrl =~ /^([^\:]*\:\/\/[^\/]*)(.*)\/.*$/ ) && ( $2 ) ) {
        if( $doGetScriptUrlFromCgi ) {
            $scriptUrlPath = $2;
        }
        $urlHost = $1;
        if( $doRemovePortNumber ) {
            $urlHost =~ s/\:[0-9]+$//;
        }
        $urlHost = $defaultUrlHost;
    } else {
        $urlHost = $defaultUrlHost;
    }

FYI, TWiki uses absolute URLs to avoid some issues with certain environments.

-- PeterThoeny - 21 Jul 2003