apm_mobile css file not used on in app browsers

Question

Hey everyone,&nbsp;
The company I'm working at has multiple apps rolled out that use a SAML Authentication with our F5 being the IDP. In these apps the login page is styled with the normal browser css (apm_full.css) file and not the mobile css file (apm_mobile.css). If I open the authentication site from the phone browser the correct mobile css file is used.&nbsp;
My question now what is metric f5 looks at to decide if the mobile css file needs to be used or the normal css file ?
Is it possible to force the mobile css somehow ?&nbsp;
Thanks,
Andreas&nbsp;

lucas_thompson_ · Answer

There is a session variable that's set when the user connects It's basically a logic decision based on the combination of the HTTP POST information and User-Agent that begins the connection.
Then there is a PHP switcher for delivering whatever CSS version (/var/sam/www/php_include/webtop/renderer/customization/general_ui/default_general_ui/en/apm.css):
Don't edit that file because your changes will be destroyed on any upgrade.
The logic looks like this:
$name = "apm_full.css";
switch( $_GET["uimode"] ){
    case 7: if( $_GET["cplatform"] == "MacOS" ){ $name = "apm_edge.css"; } break;
    case 9: $name = "apm_mobile.css"; break;
}
include( $name );

"uimode" is set to those numbers depending on a combination of the user agent and any POST data received.

ascherer_304302 · Answer

Is it possible with an irule to write to this uimode so if the user-agent contains the app name it would be set to 9 ?
Something like:
if {[HTTP::header User-Agent] contains "(iOS) xxxx-iOS" }
{
    //force ui mode to 9
    log local0. "Connection from xxxx app detected"
}

lucas_thompson_ · Answer

I don't think so, but you can give it a shot.&nbsp;
This issue sounds like a defect. User-Agent strings are always changing and unfortunately APM doesn't have a dynamically configurable map of what user-agent matches what uimode/etc. This feature has been (and continues to be) requested in different use cases. &nbsp;

ascherer_304302 · Answer

I've looked around and it seems like I'm not able to access the session variables from an irule &nbsp;
Since the app that is opening the login is a branded one we can manipulate the the User Agent string.
Do you know what specific the logic switch is looking at ?
Then it would be possible to manipulate either the http post values or the user agent string &nbsp;
Thanks&nbsp;

lucas_thompson_ · Answer

Let's get a support ticket opened for this one so that the issue can be fully characterized. With this detailed understanding of the problem, it will be easy for support to help. Just be sure to provide the exact User-Agent and what the uimode session variable gets set to.&nbsp;
You can access (read) the session variables from an irule as long as they exist, but there are some gotchas with writing them depending on the specific time you're doing it and for what purpose.&nbsp;

Forum Discussion

apm_mobile css file not used on in app browsers

6 Replies

Recent Discussions