Forum Discussion

mikey_webb's avatar
mikey_webb
Icon for Cirrus rankCirrus
Jan 07, 2015

Help with pattern match irule required

Need help with an irule to drop the request if pattern is not matched. The link and pattern is always as below whereby only the values will change....such as vid, height, quality values etc   htt...
Michael_Jenkins's avatar
Michael_Jenkins
Icon for Cirrostratus rankCirrostratus
Jan 22, 2015

Try adding some logging like below and see what you're getting. (I did see a little typo in one of the patterns and fixed it)

when HTTP_REQUEST { 
    if { [class match [IP::client_addr] equals private_net] } { 
        log local0. "IP is private"
        Internal IP match - do nothing 
    } else { 
        log local0. "IP is not private"
        switch -glob -- [string tolower [HTTP::uri]] { 
            "/getimage.aspx?vid=*&usehttp=*&cat=*&class=*&size=*&resize=*&dpi=*&quality=*&type=*&width=*&height=*&id=*" - 
            "/getimage.aspx?vid=*&usehttp=*&cat=*&shade=*&background=*&colour=*" { 
                 Looks good. Do nothing 
                log local0. "  Pattern match found"
            } 
            default { 
                log local0. "  Pattern didn't match. Respond 400"
                HTTP::respond 400 
            }
        }
    }
}