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blog/templates/partials/csp.html
2024-10-17 17:00:35 +03:00

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{#- Based on https://github.com/welpo/tabi/blob/7b00ed1d9dca5c529d2816c5b6679bfe600d63fc/templates/partials/content_security_policy.html -#}
<meta http-equiv="Content-Security-Policy"
content="default-src 'self'
{%- if config.extra.csp -%}
{#- Initialise a base script-src directive -#}
{%- set script_src = "script-src 'self'" -%}
{#- Initialise a base connect-src directive -#}
{%- set connect_src = "connect-src 'self'" -%}
{# Base logic for appending analytics domains #}
{%- if config.extra.goatcounter %}
{%- set goatcounter_host = config.extra.goatcounter.host | default(value='goatcounter.com') -%}
{%- set goatcounter_url = "https://" ~ config.extra.goatcounter.user ~ "." ~ goatcounter_host ~ "/count" %}
{%- set script_src = script_src ~ " " ~ goatcounter_url -%}
{%- set connect_src = connect_src ~ " " ~ goatcounter_url -%}
{%- endif %}
{#- Append WebSocket for Zola serve mode -#}
{%- if config.mode == "serve" -%}
{%- set connect_src = connect_src ~ " ws:" -%}
{%- endif -%}
{%- for domain in config.extra.csp -%}
{%- if domain.directive == "connect-src" -%}
{%- set configured_connect_src = domain.domains | join(sep=' ') -%}
{%- set_global connect_src = connect_src ~ " " ~ configured_connect_src -%}
{%- continue -%}
{%- endif -%}
{%- if domain.directive == "script-src" -%}
{%- set configured_script_src = domain.domains | join(sep=' ') -%}
{%- set_global script_src = script_src ~ " " ~ configured_script_src -%}
{%- continue -%}
{%- endif -%}
{#- Handle directives that are not connect-src -#}
{{ domain.directive }} {{ domain.domains | join(sep=' ') -}}
{%- if not loop.last -%}
;
{%- endif -%}
{%- endfor -%}
{#- Insert the generated connect-src -#}
{{ ";" ~ connect_src }}
{#- Insert the generated script-src -#}
{{ ";" ~ script_src }}
{%- endif -%}">