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? https://host/URI?query=any_value Rewrite URL https://host/URI?query=ReplacedValue Can this be done? What I have done is as follows which looks for anything matching the URI and does a rewrite does not really match my requirement when HTTP_REQUEST { if { [string tolower [HTTP::host]] contains "host" } { switch -glob [string tolower [HTTP::uri]] { "/URI*" { log local0. "Incoming URI = [HTTP::uri]" log local0. "URI Query = [URI::query [HTTP::uri]]" HTTP::uri "/URI?query=ReplacedValue" log local0. "Changed URI = [HTTP::uri]" } } } } Thanks.

It works only the server side. (consider change "/URI" to "/uri" on switch statement first). Maybe you will need to redirect to the new uri address to affect the client side.

when HTTP_REQUEST { if {([HTTP::uri] contains "query=any_value") } { HTTP::redirect "https://host/URI?query=ReplacedValue" } } I think this should work. -PK

Thanks p1hbatia, By "any_value or *" i meant regardless of any value the Query has it should always redirect to the destination.

How to destroy and replace a URI query value ?

14 Replies

cjunior
Nacreous
May 15, 2014
It works only the server side. (consider change "/URI" to "/uri" on switch statement first). Maybe you will need to redirect to the new uri address to affect the client side.
PK_Bhatia_13533
Cirrus
May 15, 2014
when HTTP_REQUEST { if {([HTTP::uri] contains "query=any_value") } { HTTP::redirect "https://host/URI?query=ReplacedValue" } }

I think this should work.

-PK
- Moinul_Rony
  Altostratus
  May 15, 2014
  Thanks p1hbatia, By "any_value or *" i meant regardless of any value the Query has it should always redirect to the destination.
PK_Bhatia
Nimbostratus
May 15, 2014
when HTTP_REQUEST { if {([HTTP::uri] contains "query=any_value") } { HTTP::redirect "https://host/URI?query=ReplacedValue" } }

I think this should work.

-PK
- Moinul_Rony
  Altostratus
  May 15, 2014
  Thanks p1hbatia, By "any_value or *" i meant regardless of any value the Query has it should always redirect to the destination.

nitass

Employee

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
Altostratus
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]] }

nitass_89166

Noctilucent

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
Altostratus
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]] }

nitass_89166
Noctilucent
May 19, 2014
e.g.

config [root@ve11a:Active:In Sync] config tmsh list ltm rule qux ltm rule qux { when HTTP_REQUEST { set q [URI::query [HTTP::uri] query] log local0. "q = $q" if { $q eq "A" } { log local0. "origin uri = [HTTP::uri]" HTTP::uri [string map "query=$q query=B" [HTTP::uri]] log local0. "new uri = [HTTP::uri]" } } } /var/log/ltm [root@ve11a:Active:In Sync] config tail -f /var/log/ltm May 18 21:32:58 ve11a info tmm[14715]: Rule /Common/qux : q = A May 18 21:32:58 ve11a info tmm[14715]: Rule /Common/qux : origin uri = /URI?query=A&other=somethingelse May 18 21:32:58 ve11a info tmm[14715]: Rule /Common/qux : new uri = /URI?query=B&other=somethingelse
- Moinul_Rony
  Altostratus
  May 27, 2014
  Thanks nitass, that works perfectly. But now I have a slightly different requirement matching on the incoming hostname (red.x.com) I would want to add a value such as code=red and replace anything else with code=red example: Case 1: code=yellow gets replaced with code=red https://red.x.com/test/find.jsp?dodgy=bla&class=XY&code=yellow&run=Y&state=QLD should change to https://red.x.com/test/find.jsp?dodgy=bla&class=XY&code=red&run=Y&state=QLD code=red value not present -> add to the end of the URI https://red.x.com/test/find.jsp?dodgy=bla&class=XY&run=Y&state=QLD should change to https://red.x.com/test/find.jsp?dodgy=bla&class=XY&run=Y&state=QLD&code=red
nitass
Employee
May 19, 2014
e.g.

config [root@ve11a:Active:In Sync] config tmsh list ltm rule qux ltm rule qux { when HTTP_REQUEST { set q [URI::query [HTTP::uri] query] log local0. "q = $q" if { $q eq "A" } { log local0. "origin uri = [HTTP::uri]" HTTP::uri [string map "query=$q query=B" [HTTP::uri]] log local0. "new uri = [HTTP::uri]" } } } /var/log/ltm [root@ve11a:Active:In Sync] config tail -f /var/log/ltm May 18 21:32:58 ve11a info tmm[14715]: Rule /Common/qux : q = A May 18 21:32:58 ve11a info tmm[14715]: Rule /Common/qux : origin uri = /URI?query=A&other=somethingelse May 18 21:32:58 ve11a info tmm[14715]: Rule /Common/qux : new uri = /URI?query=B&other=somethingelse
- Moinul_Rony
  Altostratus
  May 27, 2014
  Thanks nitass, that works perfectly. But now I have a slightly different requirement matching on the incoming hostname (red.x.com) I would want to add a value such as code=red and replace anything else with code=red example: Case 1: code=yellow gets replaced with code=red https://red.x.com/test/find.jsp?dodgy=bla&class=XY&code=yellow&run=Y&state=QLD should change to https://red.x.com/test/find.jsp?dodgy=bla&class=XY&code=red&run=Y&state=QLD code=red value not present -> add to the end of the URI https://red.x.com/test/find.jsp?dodgy=bla&class=XY&run=Y&state=QLD should change to https://red.x.com/test/find.jsp?dodgy=bla&class=XY&run=Y&state=QLD&code=red

nitass

Employee

May 27, 2014

e.g.

 config

[root@ve11a:Active:In Sync] config  tmsh list ltm rule qux
ltm rule qux {
    when HTTP_REQUEST {
  if { [HTTP::host] eq "red.x.com" } {
    set q [URI::query [HTTP::uri] code]

    if { $q ne "" } {
      HTTP::uri [string map "$q red" [HTTP::uri]]
    } else {
      HTTP::uri "[HTTP::uri]&code=red"
    }
  }
}
}

 test1 http://red.x.com/test/find.jsp?dodgy=bla&class=XY&code=yellow&run=Y&state=QLD

[root@ve11a:Active:In Sync] config  ssldump -Aed -nni 0.0 port 80
New TCP connection 1: 172.28.24.1(38911) <-> 172.28.24.10(80)
1401160959.5768 (0.0019)  C>S
---------------------------------------------------------------
HEAD /test/find.jsp?dodgy=bla&class=XY&code=yellow&run=Y&state=QLD 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
Accept: */*
Host: red.x.com

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

New TCP connection 2: 200.200.200.14(38911) <-> 200.200.200.101(80)
1401160959.6111 (0.0340)  C>S
---------------------------------------------------------------
HEAD /test/find.jsp?dodgy=bla&class=XY&code=red&run=Y&state=QLD 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
Accept: */*
Host: red.x.com

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

 test2 http://red.x.com/test/find.jsp?dodgy=bla&class=XY&run=Y&state=QLD

[root@ve11a:Active:In Sync] config  ssldump -Aed -nni 0.0 port 80
New TCP connection 1: 172.28.24.1(38912) <-> 172.28.24.10(80)
1401161017.7365 (0.0039)  C>S
---------------------------------------------------------------
HEAD /test/find.jsp?dodgy=bla&class=XY&run=Y&state=QLD 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
Accept: */*
Host: red.x.com

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

New TCP connection 2: 200.200.200.14(38912) <-> 200.200.200.101(80)
1401161017.7606 (0.0239)  C>S
---------------------------------------------------------------
HEAD /test/find.jsp?dodgy=bla&class=XY&run=Y&state=QLD&code=red 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
Accept: */*
Host: red.x.com

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

 test3 http://red.x.com/test/find.jsp?dodgy=bla&class=XY&code=red&run=Y&state=QLD

[root@ve11a:Active:In Sync] config  ssldump -Aed -nni 0.0 port 80
New TCP connection 1: 172.28.24.1(38913) <-> 172.28.24.10(80)
1401161081.6554 (0.0019)  C>S
---------------------------------------------------------------
HEAD /test/find.jsp?dodgy=bla&class=XY&code=red&run=Y&state=QLD 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
Accept: */*
Host: red.x.com

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

New TCP connection 2: 200.200.200.14(38913) <-> 200.200.200.101(80)
1401161081.6615 (0.0018)  C>S
---------------------------------------------------------------
HEAD /test/find.jsp?dodgy=bla&class=XY&code=red&run=Y&state=QLD 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
Accept: */*
Host: red.x.com

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

Forum Discussion

How to destroy and replace a URI query value ?

14 Replies

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