For more information regarding the security incident at F5, the actions we are taking to address it, and our ongoing efforts to protect our customers, click here.

Forum Discussion

Moinul_Rony's avatar
Moinul_Rony
Icon for Altostratus rankAltostratus
May 15, 2014

How to destroy and replace a URI query value ?

Hi,   I am trying to figure out how I can replace a URI query value.   For example for this we will select the URL based on the HTTP:host   Incoming URL pattern   https://host/URI? http...
application delivery
devops
iRules
nitass's avatar
nitass
Icon for Employee rankEmployee
May 17, 2014

what about this?

e.g.

 config

root@(ve11a)(cfg-sync In Sync)(Active)(/Common)(tmos) list ltm virtual bar
ltm virtual bar {
    destination 172.28.24.10:80
    ip-protocol tcp
    mask 255.255.255.255
    pool foo
    profiles {
        http { }
        tcp { }
    }
    rules {
        qux
    }
    source 0.0.0.0/0
    source-address-translation {
        type automap
    }
    vs-index 26
}
root@(ve11a)(cfg-sync In Sync)(Active)(/Common)(tmos) list ltm pool foo
ltm pool foo {
    members {
        200.200.200.101:80 {
            address 200.200.200.101
        }
    }
}
root@(ve11a)(cfg-sync In Sync)(Active)(/Common)(tmos) list ltm rule qux
ltm rule qux {
    when HTTP_REQUEST {
  set q [URI::query [HTTP::uri] query]
  if { $q ne "" } {
    HTTP::uri [string map "$q ReplacedValue" [HTTP::uri]]
  }
}
}

 trace

[root@ve11a:Active:In Sync] config  ssldump -Aed -nni 0.0 port 80
New TCP connection 1: 172.28.24.1(37391) <-> 172.28.24.10(80)
1400340463.6588 (0.0033)  C>S
---------------------------------------------------------------
GET /URI?query=any_value&other=somethingelse HTTP/1.1
User-Agent: curl/7.15.5 (i686-redhat-linux-gnu) libcurl/7.15.5 OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.5
Host: 172.28.24.10
Accept: */*

---------------------------------------------------------------

New TCP connection 2: 200.200.200.14(37391) <-> 200.200.200.101(80)
1400340463.6622 (0.0016)  C>S
---------------------------------------------------------------
GET /URI?query=ReplacedValue&other=somethingelse HTTP/1.1
User-Agent: curl/7.15.5 (i686-redhat-linux-gnu) libcurl/7.15.5 OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.5
Host: 172.28.24.10
Accept: */*

---------------------------------------------------------------
Moinul_Rony's avatar
Moinul_Rony
Icon for Altostratus rankAltostratus
May 19, 2014
Thanks nitass, I wanted the irule to look for query=A in the URI and replace query=A to query=B Could I try using the condition if { $q eq "query=A" } { HTTP::uri [string map "$q Query=B" [HTTP::uri]] }