74 lines
2.8 KiB
Text
74 lines
2.8 KiB
Text
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#!/usr/bin/env nu
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# Derived variables for docker-mailserver bundle rendering.
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# Receives component record as JSON argument, outputs extra vars as JSON.
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def render_mx_endpoints [domain: string, mx: list]: nothing -> string {
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$mx | each {|m|
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[
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$" - dnsName: ($domain)",
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$" recordType: MX",
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$" targets: [\"($m.priority) ($m.value)\"]",
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$" recordTTL: 300",
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] | str join "\n"
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} | str join "\n"
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}
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def render_dmarc_value [d: record]: nothing -> string {
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let rua_part = ($d.rua? | default "" | if ($in | is-not-empty) { $"rua=($in)" } else { null })
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let ruf_part = ($d.ruf? | default "" | if ($in | is-not-empty) { $"ruf=($in)" } else { null })
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let parts = [
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"v=DMARC1",
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$"p=($d.policy)",
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$rua_part,
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$ruf_part,
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$"adkim=($d.adkim? | default 's')",
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$"aspf=($d.aspf? | default 's')",
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$"pct=($d.pct? | default 100)",
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] | compact
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$parts | str join "; "
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}
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def render_autoconfig_endpoint [domain: string, target?: string]: nothing -> string {
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if ($target | default "" | is-empty) { return "" }
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[
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$" - dnsName: autoconfig.($domain)",
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$" recordType: CNAME",
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$" targets: [\"($target)\"]",
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$" recordTTL: 300",
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] | str join "\n"
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}
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def main [component_json: string]: nothing -> nothing {
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let d = ($component_json | from json)
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let relay_host = ($d | get -o relay | default {} | get -o host | default "")
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let relay_port = ($d | get -o relay | default {} | get -o port | default 587)
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let dns = ($d.dns_records? | default null)
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let dns_endpoints_block = if ($dns | is-not-empty) {
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[
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(render_mx_endpoints $dns.domain $dns.mx),
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$" - dnsName: ($dns.domain)",
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$" recordType: TXT",
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$" targets: [\"($dns.spf)\"]",
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$" recordTTL: 300",
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$" - dnsName: _dmarc.($dns.domain)",
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$" recordType: TXT",
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$" targets: [\"(render_dmarc_value $dns.dmarc)\"]",
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$" recordTTL: 300",
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(render_autoconfig_endpoint $dns.domain $dns.autoconfig?),
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] | where {|s| ($s | str trim | is-not-empty) } | str join "\n"
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} else { "" }
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{
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relay_host_postfix: (if ($relay_host | is-not-empty) { $"[($relay_host)]:($relay_port)" } else { "" }),
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tls_cert_path: "/etc/ssl/mail/tls.crt",
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tls_key_path: "/etc/ssl/mail/tls.key",
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tls_mount_path: "/etc/ssl/mail",
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dns_domain: (if ($dns | is-not-empty) { $dns.domain? | default "" } else { "" }),
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dns_dkim_selector: (if ($dns | is-not-empty) { $dns.dkim_selector? | default "mail" } else { "mail" }),
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dns_endpoints_block: $dns_endpoints_block,
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}
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| to json --raw
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| print
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}
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