Forum Discussion
CirrusF5 iRule to get data group address content values list
Hi
I am following this article for creating a data group on F5, populated from Azure IPv4 addresses.
Eveyrthing works like a charm, and now I am trying to publish the content of that data group as an html web page, but I want the output to be formulated like:
13.8.1.0/24
13.9.0.0/16
18.5.0.0/16
etc.
So it has to be presented as a list with line breaks for each entry.
Right now I am using this iRule:
when HTTP_REQUEST {
switch -glob [string tolower [HTTP::uri]] {
"/azure.html" {
# Retrieve the Azure datagroup contents, send it in a HTTP 200 response
HTTP::respond 200 content [class get azure_ipv4_dg] "Content-Type" "text/html"
}
default {
## requested something else
HTTP::respond 404 content "Oops! You've asked for something we don't have."
}
}
}
The output though comes like this:
{102.133.0.0/18 {}} {102.133.112.0/28 {}} {102.133.120.0/21 {}} {102.133.128.0/18 {}} {102.133.192.0/19 {}} {102.133.224.0/20 {}} {102.133.240.0/25 {}} {102.133.240.128/26 {}} {102.133.248.0/21 {}} {102.133.64.0/19 {}} {102.133.96.0/20 {}} {102.37.0.0/20 {}} {102.37.128.0/19 {}} {102.37.16.0/21 {}} {102.37.160.0/21 {}} {102.37.192.0/18 {}} {102.37.24.0/23 {}} {102.37.26.0/27 {}} {102.37.26.32/27 {}} {102.37.32.0/19 {}}
Is there an easy way to formulate the data to be more like a list, with line breaks, and without the brackets?
Thank you in advance for any suggestions.
2 Replies
pstavrI managed to remove the brackets by simply getting the values. iRule looks like this now:
when HTTP_REQUEST { HTTP::version 1.0 HTTP::header remove Accept-Encoding switch -glob [string tolower [HTTP::uri]] { "/azure.html" { # Retrieve the Azure datagroup contents, send it in a HTTP 200 response HTTP::respond 200 content [class names azure_ipv4_dg] "Content-Type" "text/html" } } }It now gives me something like this:
102.133.0.0/18 102.133.112.0/28 102.133.120.0/21 102.133.128.0/18 102.133.192.0/19 102.133.224.0/20 102.133.240.0/25 102.133.240.128/26 102.133.248.0/21 102.133.64.0/19 102.133.96.0/20 102.37.0.0/20 102.37.128.0/19 102.37.16.0/21 102.37.160.0/21 102.37.192.0/18 102.37.24.0/23 102.37.26.0/27 102.37.26.32/27 102.37.32.0/19 102.37.64.0/21 102.37.72.0/21 102.37.80.0/21 102.37.96.0/19
So the only thing I need is to replace space with line breaks. Any ideas?
- pstavr
I am now using two v. servers. The front one uses a stream profile and this iRule:
when HTTP_REQUEST { HTTP::header remove Accept-Encoding STREAM::disable virtual vs_ipv4feed_client_http return } when HTTP_RESPONSE { set find " " set replace "</br>" STREAM::expression "@$find@$replace@" STREAM::enable }The backend v. server (vs_ipv4feed_client_http) uses the iRule I pasted in the previous post as well.
when HTTP_REQUEST { switch -glob [string tolower [HTTP::uri]] { "/azureipv4.txt" { # Retrieve the Azure datagroup contents, send it in a HTTP 200 response HTTP::respond 200 content [class names azure_ipv4_dg] "Content-Type" "text/html" } } }The output looks like this now:
102.133.0.0/18
102.133.112.0/28
102.133.120.0/21
102.133.128.0/18
102.133.192.0/19
102.133.224.0/20
102.133.240.0/25
102.133.240.128/26
102.133.248.0/21
102.133.64.0/19
....
Which is what I wanted. However, if I look a the source code of this txt file within the browser, it looks like this:
102.133.0.0/18</br>102.133.112.0/28</br>102.133.120.0/21</br>102.133.128.0/18</br>102.133.192.0/19</br>102.133.224.0/20</br>102.133.240.0/25</br>102.133.240.128/26</br>102.133.248.0/21</br>102.133.64.0/19</br>102.133.96.0/20</br>102.37.0.0/20</br>102.37.128.0/19</br>.......My problem is that the firewall that I need to feed this list within, expects a native txt file with line breaks, rather than an html based txt file which uses "</br>". Therefore, I am unable to feed those IPs into my firewall, unless I somehow present this txt file as a native txt.
