Give Hammerhead its own edge with a built-in dashboard route; setup.sh installs it with Blacktip instead of Caddy

HAMMERHEAD_SELF_DOMAIN creates an edge for this machine, writes its token to <data>/self-edge.env
and adds an https route for the dashboard to that edge's config, so no reverse proxy is needed.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

.env.example

@@ -21,6 +21,14 @@ HAMMERHEAD_MASTER_KEY=
 # Leave empty and /metrics does not exist.
 #HAMMERHEAD_METRICS_TOKEN=
 
+# Serve the dashboard through a Blacktip edge on this same machine, at this name, with an
+# automatic HTTPS certificate: no Caddy or other web server in front of Hammerhead. Hammerhead
+# makes the edge itself and writes its token to <data>/self-edge.env (BLACKTIP_TOKEN=...).
+# deploy/setup.sh --domain sets this up for you. Needs HAMMERHEAD_URL set to the same name.
+#HAMMERHEAD_SELF_DOMAIN=hammerhead.example.com
+# The edge's public WireGuard address for sites; default <HAMMERHEAD_SELF_DOMAIN>:51820.
+#HAMMERHEAD_SELF_TUNNEL=hammerhead.example.com:51820
+
 # How long access logs are kept (days). Default 30.
 #HAMMERHEAD_LOG_DAYS=30
 

README.md

@@ -45,15 +45,15 @@ Releases are built by Gitea Actions. Pushing a tag such as `v0.2.0` runs `.gitea
 
 **Fastest: one script on a fresh VPS**
 
-`deploy/setup.sh` (also inside the Linux archives) installs everything for you on a systemd Linux: the service, a generated master key, the firewall rules, and optionally HTTPS.
+`deploy/setup.sh` (also inside the Linux archives) installs everything for you on a systemd Linux: the services, a generated master key, the firewall rules and HTTPS.
 
 ```
-sudo sh setup.sh --domain hammerhead.example.com            # Hammerhead + Caddy for HTTPS
-sudo sh setup.sh edge  --hammerhead https://hammerhead.example.com --token <edge token> --ports 25565,30000-30100
-sudo sh setup.sh agent --hammerhead https://hammerhead.example.com --token <site token>
+sudo sh setup.sh --domain hammerhead.example.com            # Hammerhead and an edge on this machine
+sudo sh setup.sh agent --hammerhead https://hammerhead.example.com --token <site token>   # on each site
+sudo sh setup.sh edge  --hammerhead https://hammerhead.example.com --token <edge token>   # more public servers
 ```
 
-`edge` installs Blacktip (with its bundled Traefik) and lists every IP address on the machine that ports can be opened on; `agent` installs Bamboo on the machine that hosts your services. All three can run on one machine or on three.
+With `--domain`, Hammerhead listens only on `127.0.0.1:8080` and gets an edge of its own (`HAMMERHEAD_SELF_DOMAIN`): the Blacktip on the same machine serves the dashboard at `https://<domain>` with an automatic certificate, so no Caddy or other web server is needed. The route is built in, not a mapping you can edit or delete by mistake. DNS for the name must point at the server and ports 80 and 443 must be free. `--caddy` keeps the old style: Hammerhead alone, with Caddy providing HTTPS. Add `--ports 25565,30000-30100` to open game or mail ports in the firewall, and `--no-auto-update` to leave updates to you.
 
 **On a Linux server (systemd)**
 

agent.go

@@ -73,6 +73,9 @@ func (s *Server) edgeConfig(w http.ResponseWriter, r *http.Request) {
 			cfg.Mappings = append(cfg.Mappings, *m)
 		}
 	}
+	if m := s.selfMapping(e); m != nil {
+		cfg.Mappings = append(cfg.Mappings, *m)
+	}
 	cfg.MailEgress = []model.MailPolicy{}
 	for _, x := range s.st.MailEgress {
 		if x.EdgeID == e.ID && x.Enabled {

cmd/hammerhead/main.go

@@ -6,6 +6,7 @@ import (
 	"flag"
 	"fmt"
 	"log"
+	"net"
 	"net/http"
 	"os"
 	"strconv"
@@ -20,6 +21,19 @@ import (
 // version is set at build time (deploy/build.sh).
 var version = "dev"
 
+// localAddr turns a listen address into one this machine can dial: ":8080" and "0.0.0.0:8080"
+// become "127.0.0.1:8080".
+func localAddr(listen string) string {
+	host, port, err := net.SplitHostPort(listen)
+	if err != nil {
+		return listen
+	}
+	if host == "" || host == "0.0.0.0" || host == "::" {
+		host = "127.0.0.1"
+	}
+	return net.JoinHostPort(host, port)
+}
+
 func env(k, def string) string {
 	if v := os.Getenv(k); v != "" {
 		return v
@@ -61,6 +75,9 @@ func main() {
 		MasterKey:        os.Getenv("HAMMERHEAD_MASTER_KEY"),
 		MetricsToken:     os.Getenv("HAMMERHEAD_METRICS_TOKEN"),
 		LogRetentionDays: days,
+		SelfDomain:       os.Getenv("HAMMERHEAD_SELF_DOMAIN"),
+		SelfTarget:       localAddr(*listen),
+		SelfTunnel:       os.Getenv("HAMMERHEAD_SELF_TUNNEL"),
 	})
 	if err != nil {
 		log.Fatal(err)

deploy/setup.sh

@@ -1,45 +1,49 @@
 #!/bin/sh
 # One-shot setup for a VPS. Run as root.
 #
-#   sh setup.sh [--domain hh.example.com] [--version v0.1.0] [--no-auto-update]   Hammerhead (dashboard and API)
-#   sh setup.sh edge  --hammerhead URL --token TOKEN [--ports 25565,30000-30100] [--version V]
-#   sh setup.sh agent --hammerhead URL --token TOKEN [--version V]
+#   sh setup.sh --domain hh.example.com [options]     Hammerhead and a Blacktip edge on this machine
+#   sh setup.sh edge  --hammerhead URL --token TOKEN [options]    another edge
+#   sh setup.sh agent --hammerhead URL --token TOKEN [options]    a site agent
 #
-# Hammerhead: installs it as a systemd service (with a generated master key, kept in
-#   /etc/hammerhead/hammerhead.env), and with --domain also Caddy, which gets and renews
-#   the HTTPS certificate for that name. DNS for the name must already point here.
-# edge:  installs Blacktip, with its bundled Traefik, on this machine (or any other VPS),
-#   opens the firewall and lists every IP address it can open ports on.
-# agent: installs Bamboo, the site agent, on the machine that hosts your services.
+# With --domain, this installs Hammerhead (the dashboard) and a Blacktip edge on the same
+# machine. The edge serves the dashboard itself at https://<domain> with an automatic
+# certificate, so no separate web server is needed. DNS for the domain must already point here,
+# and ports 80 and 443 must be free (stop Pangolin, Caddy, nginx... first).
 #
-# Edge and agent need a token, which only exists once Hammerhead is up: create the edge under
-# Server -> Edges (or the site under Sites) in the dashboard and copy the values from "Show command".
+# Options:
+#   --version V         release of Hammerhead (or of the edge/agent for those modes); default newest
+#   --edge-version V    release of the Blacktip installed next to Hammerhead; default newest
+#   --ports 25565,30000-30100   also open these (TCP and UDP) in the firewall
+#   --tunnel HOST:PORT  the edge's public WireGuard address; default <domain>:51820
+#   --caddy             old style: Hammerhead alone, with Caddy providing HTTPS (no edge here)
+#   --no-auto-update    don't let the programs update themselves
+#
+# Without --domain, Hammerhead alone is installed on port 8080 over plain HTTP.
+# Edge and agent need a token: create the edge under Server -> Edges (or the site under Sites)
+# in the dashboard and copy the values from "Show command".
 # Safe to run again: it upgrades and keeps your settings and data.
 set -eu
 
 BASE=${SHARKS_BASE:-https://git.veillax.com/Veillax}
 MODE=hammerhead
 case "${1:-}" in edge | agent) MODE=$1; shift ;; esac
-DOMAIN= VERSION= HH= TOKEN= PORTS= AUTOUP=1
+DOMAIN= VERSION= EDGE_VERSION= HH= TOKEN= PORTS= TUNNEL= CADDY=0 AUTOUP=1
 while [ $# -gt 0 ]; do
 	case "$1" in
 		--domain) DOMAIN=$2; shift 2 ;;
 		--version) VERSION=$2; shift 2 ;;
+		--edge-version) EDGE_VERSION=$2; shift 2 ;;
 		--hammerhead) HH=$2; shift 2 ;;
 		--token) TOKEN=$2; shift 2 ;;
 		--ports) PORTS=$2; shift 2 ;;
+		--tunnel) TUNNEL=$2; shift 2 ;;
+		--caddy) CADDY=1; shift ;;
 		--no-auto-update) AUTOUP=0; shift ;;
-		-h | --help) sed -n '2,16p' "$0"; exit 0 ;;
+		-h | --help) sed -n '2,24p' "$0"; exit 0 ;;
 		*) echo "unknown option $1 (see --help)" >&2; exit 2 ;;
 	esac
 done
 
-# auto_update <file> <PREFIX>: lets the program update itself unless --no-auto-update was given
-auto_update() {
-	[ "$AUTOUP" = 1 ] && set_env "$1" "$2_AUTO_UPDATE" 1
-	return 0
-}
-
 say() { printf '\n== %s\n' "$*"; }
 die() { echo "error: $*" >&2; exit 1; }
 [ "$(id -u)" = 0 ] || die "run as root: sudo sh $0 $*"
@@ -75,10 +79,10 @@ latest() { # newest release tag of repo $1 (read from git, so no API token is ne
 	git ls-remote --tags --refs "$BASE/$1" 2> /dev/null | sed 's|.*refs/tags/||' | grep -E '^v[0-9]' | sort -V | tail -n 1
 }
 
-# fetch_install <app>: downloads that app's release for this CPU, verifies it and runs its install.sh
+# fetch_install <app> [version]: downloads that app's release for this CPU, verifies it and runs its install.sh
 fetch_install() {
 	app=$1
-	ver=${VERSION:-$(latest "$app")}
+	ver=${2:-$(latest "$app")}
 	[ -n "$ver" ] || die "couldn't find a release of $app at $BASE/$app (use --version, or SHARKS_BASE for a mirror)"
 	dir=$(mktemp -d)
 	say "downloading $app $ver ($ARCH)"
@@ -104,6 +108,12 @@ set_env() {
 	fi
 }
 
+# auto_update <file> <PREFIX>: lets the program update itself unless --no-auto-update was given
+auto_update() {
+	[ "$AUTOUP" = 1 ] && set_env "$1" "$2_AUTO_UPDATE" 1
+	return 0
+}
+
 firewall_open() { # firewall_open 80/tcp 443/tcp ...
 	if command -v ufw > /dev/null 2>&1 && ufw status 2> /dev/null | grep -q "Status: active"; then
 		for p in "$@"; do ufw allow "$p" > /dev/null; done
@@ -126,54 +136,17 @@ wait_active() { # wait_active <service>
 	systemctl is-active --quiet "$1" || { journalctl -u "$1" -n 20 --no-pager; die "$1 didn't start"; }
 }
 
-case $MODE in
-hammerhead)
-	fetch_install hammerhead
-	ENVF=/etc/hammerhead/hammerhead.env
-	auto_update "$ENVF" HAMMERHEAD
-	if ! grep -q '^HAMMERHEAD_MASTER_KEY=.' "$ENVF"; then
-		say "generating the master key"
-		set_env "$ENVF" HAMMERHEAD_MASTER_KEY "$(/usr/local/bin/hammerhead -genkey)"
-		echo "Saved in $ENVF. Back that file up: without the key the encrypted secrets in the database can't be read."
-	fi
-	if [ -n "$DOMAIN" ]; then
-		set_env "$ENVF" HAMMERHEAD_URL "https://$DOMAIN"
-		# only Caddy needs to reach it
-		sed -i 's|-listen :8080|-listen 127.0.0.1:8080|' /etc/systemd/system/hammerhead.service
-		systemctl daemon-reload
-		if ! command -v caddy > /dev/null 2>&1; then
-			say "installing Caddy (HTTPS certificates for $DOMAIN)"
-			pkg_install caddy || die "couldn't install Caddy from this distribution; see https://caddyserver.com/docs/install and proxy $DOMAIN to 127.0.0.1:8080"
-		fi
-		mkdir -p /etc/caddy
-		printf '%s {\n\treverse_proxy 127.0.0.1:8080\n}\n' "$DOMAIN" > /etc/caddy/Caddyfile
-		systemctl enable caddy > /dev/null 2>&1 || true
-		systemctl restart caddy
-		firewall_open 80/tcp 443/tcp
-		URL="https://$DOMAIN"
-	else
-		firewall_open 8080/tcp
-		ip=$(public_ips | head -n 1)
-		URL="http://${ip:-this-server}:8080"
-		echo "No --domain given, so the dashboard is plain HTTP. Put it behind HTTPS before you create real logins (run this again with --domain)."
-	fi
-	systemctl restart hammerhead
-	wait_active hammerhead
-	say "Hammerhead is running"
-	echo "Open $URL to create the first administrator."
-	echo
-	echo "Next, in the dashboard: Server -> Edges -> add an edge, then on the machine that has your public IPs run"
-	echo "  sh setup.sh edge --hammerhead $URL --token <edge token>"
-	echo "and on each machine that hosts your services (home server, game server...) run"
-	echo "  sh setup.sh agent --hammerhead $URL --token <site token>"
-	echo "Either can be this same machine."
-	;;
-edge)
-	[ -n "$HH" ] && [ -n "$TOKEN" ] || die "edge needs --hammerhead URL and --token TOKEN (Server -> Edges -> Show command)"
-	fetch_install blacktip
+# listeners on 80/443 that would stop an edge serving websites
+port_users() {
+	ss -H -ltnp '( sport = :80 or sport = :443 )' 2> /dev/null | grep -v '"blacktip"\|"traefik"' || true
+}
+
+# edge_setup <hammerhead url> <token> <version>: Blacktip with its bundled Traefik, configured but not started
+edge_setup() {
+	fetch_install blacktip "$3"
 	ENVF=/etc/blacktip/blacktip.env
-	set_env "$ENVF" BLACKTIP_HAMMERHEAD "$HH"
-	set_env "$ENVF" BLACKTIP_TOKEN "$TOKEN"
+	set_env "$ENVF" BLACKTIP_HAMMERHEAD "$1"
+	set_env "$ENVF" BLACKTIP_TOKEN "$2"
 	auto_update "$ENVF" BLACKTIP
 	chmod 600 "$ENVF"
 	say "network"
@@ -201,13 +174,94 @@ edge)
 	fi
 	echo "In the dashboard each port picks which of these addresses it listens on."
 	echo "Ports you open later in the dashboard must also be allowed in the firewall: run this again with --ports."
+}
+
+case $MODE in
+hammerhead)
+	fetch_install hammerhead "$VERSION"
+	ENVF=/etc/hammerhead/hammerhead.env
+	auto_update "$ENVF" HAMMERHEAD
+	if ! grep -q '^HAMMERHEAD_MASTER_KEY=.' "$ENVF"; then
+		say "generating the master key"
+		set_env "$ENVF" HAMMERHEAD_MASTER_KEY "$(/usr/local/lib/hammerhead/hammerhead -genkey)"
+		echo "Saved in $ENVF. Back that file up: without the key the encrypted secrets in the database can't be read."
+	fi
+	UNIT=/etc/systemd/system/hammerhead.service
+	if [ -n "$DOMAIN" ]; then
+		set_env "$ENVF" HAMMERHEAD_URL "https://$DOMAIN"
+		# only something on this machine needs to reach it
+		sed -i 's|-listen :8080|-listen 127.0.0.1:8080|' "$UNIT"
+		if [ "$CADDY" = 1 ]; then
+			systemctl daemon-reload
+			if ! command -v caddy > /dev/null 2>&1; then
+				say "installing Caddy (HTTPS certificates for $DOMAIN)"
+				pkg_install caddy || die "couldn't install Caddy from this distribution; see https://caddyserver.com/docs/install and proxy $DOMAIN to 127.0.0.1:8080"
+			fi
+			mkdir -p /etc/caddy
+			printf '%s {\n\treverse_proxy 127.0.0.1:8080\n}\n' "$DOMAIN" > /etc/caddy/Caddyfile
+			systemctl enable caddy > /dev/null 2>&1 || true
+			systemctl restart caddy
+			firewall_open 80/tcp 443/tcp
+			URL="https://$DOMAIN"
+		else
+			# the dashboard is served by the edge on this machine, so Hammerhead gets its own edge
+			set_env "$ENVF" HAMMERHEAD_SELF_DOMAIN "$DOMAIN"
+			[ -z "$TUNNEL" ] || set_env "$ENVF" HAMMERHEAD_SELF_TUNNEL "$TUNNEL"
+			URL="https://$DOMAIN"
+		fi
+	else
+		firewall_open 8080/tcp
+		ip=$(public_ips | head -n 1)
+		URL="http://${ip:-this-server}:8080"
+		echo "No --domain given, so the dashboard is plain HTTP. Put it behind HTTPS before you create real logins (run this again with --domain)."
+	fi
+	systemctl daemon-reload
+	systemctl restart hammerhead
+	wait_active hammerhead
+	say "Hammerhead is running"
+
+	if [ -n "$DOMAIN" ] && [ "$CADDY" = 0 ]; then
+		TOKENFILE=/var/lib/hammerhead/self-edge.env
+		for i in 1 2 3 4 5 6 7 8 9 10; do [ -f "$TOKENFILE" ] && break; sleep 1; done
+		[ -f "$TOKENFILE" ] || die "Hammerhead didn't create $TOKENFILE; check: journalctl -u hammerhead"
+		edge_token=$(sed -n 's/^BLACKTIP_TOKEN=//p' "$TOKENFILE")
+		edge_setup http://127.0.0.1:8080 "$edge_token" "$EDGE_VERSION"
+		# something else on 80/443 would stop the dashboard route from coming up
+		if systemctl is-active --quiet caddy 2> /dev/null; then
+			say "stopping Caddy"
+			echo "Caddy was serving this site and holds ports 80/443, which the edge needs now."
+			systemctl disable --now caddy > /dev/null 2>&1 || true
+		fi
+		others=$(port_users)
+		if [ -n "$others" ]; then
+			echo "$others" >&2
+			die "something else is listening on port 80 or 443 (above). Stop it (for Pangolin: docker compose stop), then run: systemctl restart blacktip"
+		fi
+		systemctl restart blacktip
+		wait_active blacktip
+		say "Blacktip is running"
+		echo "The dashboard is served by the edge on this machine at $URL once the certificate is issued"
+		echo "(a few seconds; $DOMAIN must point at this server). Until then, from your own computer:"
+		echo "  ssh -L 8080:127.0.0.1:8080 you@this-server      then open http://localhost:8080"
+	fi
+	echo
+	echo "Open $URL to create the first administrator."
+	echo
+	echo "Next: on each machine that hosts your services (home server, game server...) run"
+	echo "  sh setup.sh agent --hammerhead $URL --token <site token>"
+	echo "with the token from Sites -> add a site. For more public servers add edges under Server -> Edges and run"
+	echo "  sh setup.sh edge --hammerhead $URL --token <edge token>"
+	;;
+edge)
+	[ -n "$HH" ] && [ -n "$TOKEN" ] || die "edge needs --hammerhead URL and --token TOKEN (Server -> Edges -> Show command)"
+	edge_setup "$HH" "$TOKEN" "$VERSION"
 	systemctl restart blacktip
 	wait_active blacktip
 	say "Blacktip is running"
 	;;
 agent)
 	[ -n "$HH" ] && [ -n "$TOKEN" ] || die "agent needs --hammerhead URL and --token TOKEN (Sites -> Show command)"
-	fetch_install bamboo
+	fetch_install bamboo "$VERSION"
 	ENVF=/etc/bamboo/bamboo.env
 	set_env "$ENVF" BAMBOO_HAMMERHEAD "$HH"
 	set_env "$ENVF" BAMBOO_TOKEN "$TOKEN"

selfedge.go

@@ -0,0 +1,71 @@
+package hammerhead
+
+import (
+	"errors"
+	"fmt"
+	"net"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+
+	"git.veillax.com/Veillax/reef/model"
+)
+
+const selfMappingID = "hammerhead-dashboard"
+
+// ensureSelfEdge makes sure this server has an edge of its own, for a Blacktip on the same
+// machine, and writes that edge's token to <data>/self-edge.env for the installer. The edge
+// also carries a built-in https route for the dashboard (see selfMapping), so no separate
+// reverse proxy is needed in front of Hammerhead.
+func (s *Server) ensureSelfEdge() error {
+	o := s.opts
+	if o.SelfDomain == "" {
+		return nil
+	}
+	host, port, err := net.SplitHostPort(o.SelfTarget)
+	if err != nil {
+		return fmt.Errorf("HAMMERHEAD_SELF_DOMAIN needs a listen address like 127.0.0.1:8080: %w", err)
+	}
+	if n, _ := strconv.Atoi(port); n < 1 || host == "" {
+		return errors.New("the dashboard's listen address needs a host and a port")
+	}
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	e := s.findEdge(s.st.Settings.SelfEdgeID)
+	if e == nil {
+		e = &model.Edge{ID: newID(), Name: "Hammerhead server", Token: randHex(24), AuthKey: randHex(32),
+			TunnelAddr: o.SelfTunnel, TunnelIP: s.allocIPLocked(), OrgIDs: []string{}, IPs: []string{}}
+		s.st.Edges = append(s.st.Edges, e)
+		s.st.Sites = append(s.st.Sites, &model.Site{ID: newID(), Name: e.Name + " (this machine)",
+			Local: true, EdgeID: e.ID, Connected: []string{}})
+		s.st.Settings.SelfEdgeID = e.ID
+		s.bump()
+	}
+	body := "# written by Hammerhead for the Blacktip on this machine; keep it private\nBLACKTIP_TOKEN=" + e.Token + "\n"
+	return os.WriteFile(filepath.Join(s.dir, "self-edge.env"), []byte(body), 0o600)
+}
+
+// selfMapping is the dashboard's own route on the self edge: https on the configured name,
+// forwarded to Hammerhead's listen address through the edge's local site. It is added to that
+// edge's config and never stored, so it can't be edited or deleted by mistake in the UI.
+// Caller holds s.mu.
+func (s *Server) selfMapping(e *model.Edge) *model.Mapping {
+	o := s.opts
+	if o.SelfDomain == "" || e.ID != s.st.Settings.SelfEdgeID {
+		return nil
+	}
+	host, port, err := net.SplitHostPort(o.SelfTarget)
+	if err != nil {
+		return nil
+	}
+	n, _ := strconv.Atoi(port)
+	for _, st := range s.st.Sites {
+		if st.Local && st.EdgeID == e.ID {
+			return &model.Mapping{ID: selfMappingID, Name: "Hammerhead dashboard", Proto: model.ProtoHTTPS, EdgeID: e.ID,
+				BindIP: "0.0.0.0", Port: 443, Hostname: strings.ToLower(o.SelfDomain), Enabled: true, RedirectHTTP: true,
+				HealthSeconds: -1, Targets: []model.Target{{SiteID: st.ID, Host: host, Port: n}}}
+		}
+	}
+	return nil
+}

selfedge_test.go

@@ -0,0 +1,98 @@
+package hammerhead
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"git.veillax.com/Veillax/hammerhead/internal/secretbox"
+	"git.veillax.com/Veillax/reef/model"
+)
+
+func edgeConfigOf(t *testing.T, s *Server, token string) model.EdgeConfig {
+	t.Helper()
+	ts := httptest.NewServer(s.Handler())
+	defer ts.Close()
+	req, _ := http.NewRequest("GET", ts.URL+"/edge/config?v=0", nil)
+	req.Header.Set("Authorization", "Bearer "+token)
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer resp.Body.Close()
+	var cfg model.EdgeConfig
+	if resp.StatusCode != 200 {
+		t.Fatalf("edge config: %s", resp.Status)
+	}
+	json.NewDecoder(resp.Body).Decode(&cfg)
+	return cfg
+}
+
+func tokenFile(t *testing.T, dir string) string {
+	b, err := os.ReadFile(filepath.Join(dir, "self-edge.env"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	return strings.TrimSpace(strings.SplitN(strings.SplitN(string(b), "BLACKTIP_TOKEN=", 2)[1], "\n", 2)[0])
+}
+
+var key = secretbox.GenerateKey()
+
+func TestSelfEdgeServesTheDashboardWithoutAProxy(t *testing.T) {
+	dir := t.TempDir()
+	opts := Options{MasterKey: key, SelfDomain: "Hammerhead.Example.com", SelfTarget: "127.0.0.1:8080"}
+	s, err := New(dir, opts)
+	if err != nil {
+		t.Fatal(err)
+	}
+	token := tokenFile(t, dir)
+	cfg := edgeConfigOf(t, s, token)
+	if len(cfg.Mappings) != 1 || len(cfg.Local) != 1 {
+		t.Fatalf("mappings=%d local=%d", len(cfg.Mappings), len(cfg.Local))
+	}
+	m := cfg.Mappings[0]
+	if m.Proto != model.ProtoHTTPS || m.Hostname != "hammerhead.example.com" || m.Port != 443 || !m.RedirectHTTP || !m.Enabled ||
+		len(m.Targets) != 1 || m.Targets[0].Host != "127.0.0.1" || m.Targets[0].Port != 8080 || m.Targets[0].SiteID != cfg.Local[0] {
+		t.Fatalf("unexpected dashboard route: %+v", m)
+	}
+	if m.Auth.Protected() {
+		t.Fatal("the dashboard has its own login and must not sit behind resource auth")
+	}
+	edgeID := s.st.Settings.SelfEdgeID
+	if info, _ := os.Stat(filepath.Join(dir, "self-edge.env")); info.Mode().Perm()&0o077 != 0 && os.PathSeparator == '/' {
+		t.Fatalf("token file is readable by others: %v", info.Mode())
+	}
+	s.Close()
+
+	// a restart keeps the same edge and token instead of making a new one
+	s2, err := New(dir, opts)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer s2.Close()
+	if s2.st.Settings.SelfEdgeID != edgeID || tokenFile(t, dir) != token || len(s2.st.Edges) != 1 {
+		t.Fatal("restart changed the self edge")
+	}
+	if len(edgeConfigOf(t, s2, token).Mappings) != 1 {
+		t.Fatal("route missing after restart")
+	}
+}
+
+func TestNoSelfEdgeUnlessAsked(t *testing.T) {
+	dir := t.TempDir()
+	s, err := New(dir, Options{MasterKey: key})
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer s.Close()
+	if len(s.st.Edges) != 0 {
+		t.Fatal("an edge appeared without HAMMERHEAD_SELF_DOMAIN")
+	}
+	if _, err := os.Stat(filepath.Join(dir, "self-edge.env")); err == nil {
+		t.Fatal("token file written without HAMMERHEAD_SELF_DOMAIN")
+	}
+}

store.go

@@ -111,6 +111,8 @@ type Settings struct {
 	AcmeEmail    string `json:"acmeEmail"`
 	AcmeStaging  bool   `json:"acmeStaging"`
 	SMTP         SMTP   `json:"smtp"`
+	// SelfEdgeID is this server's own edge (see HAMMERHEAD_SELF_DOMAIN).
+	SelfEdgeID string `json:"selfEdgeId,omitempty"`
 }
 
 type Secret struct {
@@ -170,6 +172,14 @@ type Options struct {
 	AlertInterval    time.Duration // how often alerts are evaluated; 0 = 15s
 	AlertDebounce    time.Duration // overrides the per-organization delay before alerting (tests)
 	OfflineAfter     time.Duration // how long an edge or site may stay silent before it counts as down; 0 = 90s
+
+	// SelfDomain (HAMMERHEAD_SELF_DOMAIN) gives this server an edge of its own, with a built-in
+	// https route for the dashboard at that name, so no reverse proxy is needed in front of it.
+	// SelfTarget is the address Hammerhead listens on (e.g. 127.0.0.1:8080); SelfTunnel is the
+	// edge's public WireGuard endpoint (default <SelfDomain>:51820).
+	SelfDomain string
+	SelfTarget string
+	SelfTunnel string
 }
 
 type Server struct {
@@ -258,6 +268,13 @@ func New(dir string, opts Options) (*Server, error) {
 			return nil, err
 		}
 	}
+	if opts.SelfDomain != "" && opts.SelfTunnel == "" {
+		s.opts.SelfTunnel = opts.SelfDomain + ":51820"
+	}
+	if err := s.ensureSelfEdge(); err != nil {
+		db.Close()
+		return nil, err
+	}
 	if err := s.save(); err != nil {
 		db.Close()
 		return nil, err