[Kea-users] Flex options hook library

[Christoph Pleger]

Hello,

>   If you are handling PXE clients, using the vendor client class would probably be 
> best.
> But if you do want to change an option value based on the content of a request, you 
> could test the vendor class contents.
> ie.: 
>       "hooks-libraries": [ {
>                "library": "/usr/local/lib/libdhcp_flex_option.so",
>                "parameters": {
>                    "options": [
>                        {
>                            "code": 67,
>                            "supersede": "ifelse(substring(option[60].hex,0,20) == 'PXEClient:Arch:00007', concat('pxe-x00007','.boot'),'')"
>                        }
>                    ]
>                }
>            }
>        ],


But what I'd like to have, is (excerpt)

    "client-classes": [
      {
        "name": "bookworm current-amd64 schlick:/linf/bookworm",
        "option-data": [
          {
            "space": "dhcp4",
            "name": "root-path",
            "code": 17,
            "data": "/linf/bookworm/nfsroot/current-amd64",
            "user-context": {
              "root-path": "/linf/bookworm/nfsroot/current-amd64"
            }
          },
          {
            "space": "dhcp4",
            "name": "local-nfs-path",
            "code": 170,
            "data": "schlick:/linf/bookworm"
          }
        ]
      }
    ],

    "hooks-libraries": [
      {
       
        "library": "/usr/lib/x86_64-linux-
gnu/kea/hooks/libdhcp_flex_option.so",
        "parameters": {
          "options": [
            {
              "space": "dhcp4",
              "name": "boot-file-name",
              "code": 67,
              "add": "ifelse(option[client-system].hex == 0x0007 or
option[client-system].hex == 0x0009', '/linf/' + split(option[17], '/',
3) + '/boot/' + split(option[root-path], '/', 5) + '/syslinux.efi',
'/linf/' + split(option[17], '/', 3) + '/boot/' + split(option[root-
path], '/', 5) + '/pxelinux.0"
            }
          ]
        }
      }
    ],

Regards
  Christoph
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