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69 lines
2.7 KiB
69 lines
2.7 KiB
2 years ago
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{%- macro iptables_param(name, value, ns) -%}
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{% set has_not_operator = name.startswith('not_') -%}
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{% set filtered_name = name[4:] if name.startswith('not_') else name -%}
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{% if iptables_mappings[filtered_name] is not mapping -%}
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{%- include 'no iptables mapping for "' ~ filtered_name ~ '"' -%}
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{% elif iptables_mappings[filtered_name].param is not string -%}
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{%- include 'no param in iptables mapping for "' ~ filtered_name ~ '"' -%}
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{% else -%}
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{% set mapping = iptables_mappings[filtered_name] -%}
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{% if mapping.module is string and ns.module != mapping.module -%}-m {{ mapping.module }} {% endif -%}
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{% if has_not_operator == true -%}! {% endif -%}
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{% if mapping.param | length == 1 -%}-{{ mapping.param }} {% else -%}--{{ mapping.param }} {% endif -%}
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{%- set new_value = (value | join(mapping.join | d(','))) if value | type_debug == 'list' else value -%}
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{%- set new_value = (new_value | upper) if mapping.upper | d(false) == true else (new_value | lower) if mapping.lower | d(false) == true else new_value -%}
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{%- set new_value = mapping.if_true if value is boolean and value == true and mapping.if_true is string else new_value -%}
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{%- set new_value = mapping.if_false if value is boolean and value == false and mapping.if_false is string else new_value -%}
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{{- new_value -}}
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{%- if mapping.module is string -%}
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{%- set ns.module = mapping.module -%}
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{%- endif -%}
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{%- endif -%}
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{%- endmacro -%}
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{% macro iptables_rule(chain, rule) -%}
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{%- set ns = namespace(module='') -%}
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-A {{ chain | upper -}}
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{%- for param in rule | d({}) | dict2items -%}
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{{- ' ' -}}
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{{- iptables_param(param.key, param.value, ns) -}}
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{%- endfor -%}
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{% endmacro -%}
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{% macro iptables_table(name, params) -%}
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{% if params is mapping and (params | dict2items | length > 0) -%}
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*{{ name }}
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{% for policy in params.default_policy | d({}) | dict2items -%}
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:{{ policy.key | upper }} {{ policy.value | upper }}
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{% endfor -%}
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{% for section in params | dict2items -%}
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{% if section.key != 'default_policy' -%}
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{% if section.value | type_debug == 'list' -%}
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{% for rule in section.value -%}
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{{ iptables_rule(section.key, rule) }}
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{% endfor -%}
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{% elif section.value is mapping -%}
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{{ iptables_rule(section.key, section.value) }}
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{% endif -%}
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{% endif -%}
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{% endfor -%}
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COMMIT
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{% endif -%}
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{%- endmacro -%}
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{{- iptables_table('filter', firewall_cfg.filter | d({})) }}
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{{ iptables_table('nat', firewall_cfg.nat | d({})) }}
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{{ iptables_table('mangle', firewall_cfg.mangle | d({})) }}
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{{ iptables_table('raw', firewall_cfg.raw | d({})) -}}
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