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Abed_AL-R's avatar
Abed_AL-R
Icon for Cirrostratus rankCirrostratus
Feb 03, 2019

ICAP based on file type

Hi

I'm trying to implemet ICAP based on file types. Only certain file types allowed to be forwarded to ICAP server.

I tried to implemet this iRule:

when HTTP_REQUEST {
if {([HTTP::method] eq "POST")} {
set path [HTTP::path]
switch -glob $path {
    "*.doc" -
    "*.pdf" - 
    "*.docx" -
    "*.xlx" -
    "*.xlsx" {
    log local0. "Requested uri: [HTTP::uri] from IP: [IP::local_addr] forwarded to ICAP"
        ADAPT::enable request enable
    }
    "*.html" -
    "*.js" {
    log local0. "Requested uri: [HTTP::uri] from IP: [IP::local_addr] no need for ICAP"
        ADAPT::enable request disable
    }
    default {
    log local0. "Requested uri: [HTTP::uri] from IP: [IP::local_addr] redirected to blockpage"
    HTTP::redirect http://blabla.com/virus.html
    }
}
}
}

But the thing is that the http path does not end with *.doc or any other file type in the irule.

What is the http header to check that contains the ?

Thanks!

application delivery
iRules
LTM
  • Abed_AL-R's avatar
    Abed_AL-R
    Icon for Cirrostratus rankCirrostratus
    Feb 03, 2019

    ok .. so I customized the irule to do the following:

    when HTTP_REQUEST {
if {([HTTP::method] eq "POST") and [string tolower [HTTP::host]] eq "blabla.com" and [HTTP::header exists "Content-Disposition"] } {
switch -glob [HTTP::header value "Content-Disposition"] {
    "*filename=*.doc*" -
    "*filename=*.pdf*" - 
    "*filename=*.docx*" -
    "*filename=*.xlx*" -
    "*filename=*.xlxs*" {
 log local0. "Requested uri: [HTTP::uri] from IP: [IP::local_addr] forwarded to ICAP"
        ADAPT::enable request enable
    }
    default {
    log local0. "Requested uri: [HTTP::uri] from IP: [IP::local_addr] redirected to blockpage"
    HTTP::redirect http://blabla.com/virus.html
    }
}
}
}

    Still is not working

    I don't see in the f12 tool the Content-Disposition header ..

    Should I see that header there ? or the maybe web application is not including the Content-Disposition header ?

    What I'm missing here ? ..