#!/usr/sbin/nft -f
# Generated by edgeguard-api — DO NOT EDIT.
# Source: internal/firewall/firewall.go.
# Re-generate via `edgeguard-ctl render-config` or via API mutations.

flush ruleset

table inet edgeguard {
    set peer_ipv4 {
        type ipv4_addr; flags interval
        {{- if .PeerIPv4}}
        elements = { {{range $i, $ip := .PeerIPv4}}{{if $i}}, {{end}}{{$ip}}{{end}} }
        {{- end}}
    }
    set peer_ipv6 {
        type ipv6_addr; flags interval
        {{- if .PeerIPv6}}
        elements = { {{range $i, $ip := .PeerIPv6}}{{if $i}}, {{end}}{{$ip}}{{end}} }
        {{- end}}
    }

    chain input {
        type filter hook input priority 0; policy drop;

        # ── ANTI-LOCKOUT (immer aktiv, kann von keiner Custom-Rule overruled werden) ──
        # nft input-chain wird top-down evaluiert; eine accept-Action terminiert.
        # Diese Block kommt VOR den Custom-Rules — d.h. selbst wenn ein
        # Operator versehentlich „drop alles" baut, bleibt SSH + Admin-UI
        # erreichbar.
        tcp dport 22   ct state new limit rate 10/minute accept comment "anti-lockout: SSH (rate-limited)"
        tcp dport 443  accept comment "anti-lockout: HAProxy public HTTPS"
        tcp dport 3443 accept comment "anti-lockout: Management-UI (HAProxy admin HTTPS)"

        # Stateful baseline
        ct state established,related accept
        ct state invalid drop
        iif lo accept

        # ICMP — keep PMTUD and basic diagnostics
        ip  protocol icmp   icmp   type { echo-request, destination-unreachable, time-exceeded, parameter-problem } accept
        ip6 nexthdr  icmpv6 icmpv6 type { echo-request, destination-unreachable, packet-too-big, time-exceeded, parameter-problem, nd-router-solicit, nd-router-advert, nd-neighbor-solicit, nd-neighbor-advert } accept

        # Public ingress: HAProxy serves :80 (ACME + redirect)
        tcp dport 80 accept

        # Cluster-internal: peers reach edgeguard-api over mTLS on :8443
        tcp dport 8443 ip  saddr @peer_ipv4 accept
        tcp dport 8443 ip6 saddr @peer_ipv6 accept

        # ── Operator-defined rules ──
{{range .Legs}}
        # rule {{.RuleID}}{{if .Name}} ({{.Name}}){{end}}{{if .Comment}} — {{.Comment}}{{end}}
        {{- /* Body MUSS auf EIGENER Zeile starten (nicht via {{- }} an
                 die Comment-Zeile angehängt — sonst frisst nft die rule
                 als Teil des # Kommentars). */ -}}
        {{""}}
        {{if .SrcIfaces}}iifname { {{join .SrcIfaces ", "}} } {{end}}{{if .DstIfaces}}oifname { {{join .DstIfaces ", "}} } {{end}}{{if .SrcAddrs}}ip saddr { {{join .SrcAddrs ", "}} } {{end}}{{if .DstAddrs}}ip daddr { {{join .DstAddrs ", "}} } {{end}}{{with .Service}}{{if and (or (eq .Proto "tcp") (eq .Proto "udp")) .PortStart}}{{.Proto}} dport {{.PortStart}}{{if and .PortEnd (ne .PortEnd .PortStart)}}-{{.PortEnd}}{{end}} {{else if eq .Proto "icmp"}}ip protocol icmp {{else if eq .Proto "icmpv6"}}ip6 nexthdr icmpv6 {{end}}{{end}}{{if .Log}}log prefix "edgeguard:{{.RuleID}} " {{end}}{{.Action}}
{{end}}
    }

    chain forward {
        type filter hook forward priority 0; policy drop;

        ct state established,related accept
        ct state invalid drop
    }

    chain output {
        type filter hook output priority 0; policy accept;
    }

    chain prerouting_nat {
        type nat hook prerouting priority -100;
{{- range .NATRules}}{{if eq .Kind "dnat"}}
        # NAT {{.ID}} (dnat{{if .Comment}} — {{.Comment}}{{end}})
        {{- if .InIfaces}} iifname { {{join .InIfaces ", "}} }{{end}}
        {{- if and .Proto (ne .Proto "any")}} {{.Proto}}{{else}} meta l4proto { tcp, udp }{{end}}
        {{- if .SrcCIDR}} ip saddr {{.SrcCIDR}}{{end}}
        {{- if .DstCIDR}} ip daddr {{.DstCIDR}}{{end}}
        {{- if .DPortStart}} dport {{.DPortStart}}{{if and .DPortEnd (ne .DPortEnd .DPortStart)}}-{{.DPortEnd}}{{end}}{{end}}
        {{- if .TargetAddr}} dnat to {{.TargetAddr}}{{if .TargetPortStart}}:{{.TargetPortStart}}{{if and .TargetPortEnd (ne .TargetPortEnd .TargetPortStart)}}-{{.TargetPortEnd}}{{end}}{{end}}{{end}}
{{- end}}{{end}}
    }

    chain postrouting_nat {
        type nat hook postrouting priority 100;
{{- range .NATRules}}{{if eq .Kind "snat"}}
        # NAT {{.ID}} (snat{{if .Comment}} — {{.Comment}}{{end}})
        {{- if .OutIfaces}} oifname { {{join .OutIfaces ", "}} }{{end}}
        {{- if .SrcCIDR}} ip saddr {{.SrcCIDR}}{{end}}
        {{- if .TargetAddr}} snat to {{.TargetAddr}}{{end}}
{{- end}}{{if eq .Kind "masquerade"}}
        # NAT {{.ID}} (masquerade{{if .Comment}} — {{.Comment}}{{end}})
        {{- if .OutIfaces}} oifname { {{join .OutIfaces ", "}} }{{end}}
        {{- if .SrcCIDR}} ip saddr {{.SrcCIDR}}{{end}} masquerade
{{- end}}{{end}}
    }
}