From bed1cd01904ef89b5d31bd47de0f230214900f16 Mon Sep 17 00:00:00 2001 From: Christian Breunig Date: Sun, 19 Nov 2023 21:43:15 +0100 Subject: dhcp-client: T5760: add constraints for dhclient string options The string data type specifies either an NVT ASCII string enclosed in double quotes, or a series of octets specified in hexadecimal, separated by colons. For example: set interfaces ethernet eth0 dhcp-options client-id CLIENT-FOO or set interfaces ethernet eth0 dhcp-options client-id 43:4c:49:45:54:2d:46:4f:4f As of now there was no input validation performed. --- data/templates/dhcp-client/ipv4.j2 | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) (limited to 'data') diff --git a/data/templates/dhcp-client/ipv4.j2 b/data/templates/dhcp-client/ipv4.j2 index cc5ddf09c..4a5d5e54d 100644 --- a/data/templates/dhcp-client/ipv4.j2 +++ b/data/templates/dhcp-client/ipv4.j2 @@ -9,14 +9,21 @@ interface "{{ ifname }}" { send host-name "{{ dhcp_options.host_name }}"; {% if dhcp_options.client_id is vyos_defined %} {% set client_id = dhcp_options.client_id %} -{# Use HEX representation of client-id as it is send in MAC-address style using hex characters. If not HEX, use double quotes ASCII format #} -{% if not dhcp_options.client_id.split(':') | length >= 5 %} -{% set client_id = '"' + dhcp_options.client_id + '"' %} +{# Use HEX representation of client-id as it is send in MAC-address style using hex characters. #} +{# If not HEX, use double quotes ASCII format #} +{% if not client_id.split(':') | length >= 3 %} +{% set client_id = '"' ~ dhcp_options.client_id ~ '"' %} {% endif %} send dhcp-client-identifier {{ client_id }}; {% endif %} {% if dhcp_options.vendor_class_id is vyos_defined %} - send vendor-class-identifier "{{ dhcp_options.vendor_class_id }}"; +{% set vendor_class_id = dhcp_options.vendor_class_id %} +{# Use HEX representation of client-id as it is send in MAC-address style using hex characters. #} +{# If not HEX, use double quotes ASCII format #} +{% if not vendor_class_id.split(':') | length >= 3 %} +{% set vendor_class_id = '"' ~ dhcp_options.vendor_class_id ~ '"' %} +{% endif %} + send vendor-class-identifier {{ vendor_class_id }}; {% endif %} # The request statement causes the client to request that any server responding to the # client send the client its values for the specified options. -- cgit v1.2.3